From ca86c791f4548bdec8875cfd4fede8c02bc00c3f Mon Sep 17 00:00:00 2001
From: Kamil Jedrzejuk <kamil.jedrzejuk@allegro.pl>
Date: Wed, 7 Apr 2021 22:38:12 +0200
Subject: [PATCH 1/2] Added configurable interaction matching.

Added 'last match algorithm' to determine the defined return value of a
method. This enables easy overriding of default return values. As
requested in issue #26, #251, #321 and #962.

Based on:
https://github.com/spockframework/spock/pull/1219
---
 .../mock/IMockConfiguration.java              |  8 ++++
 .../org/spockframework/mock/IMockObject.java  |  8 ++++
 .../mock/runtime/GroovyMockInterceptor.java   |  3 +-
 .../mock/runtime/GroovyMockMetaClass.java     |  3 +-
 .../mock/runtime/InteractionScope.java        | 19 ++++++++
 .../mock/runtime/JavaMockInterceptor.java     |  3 +-
 .../mock/runtime/MockConfiguration.java       |  7 +++
 .../mock/runtime/MockObject.java              | 10 ++++-
 .../src/main/java/spock/mock/MockingApi.java  | 22 ++++++++++
 .../mock/InteractionScopeMatching.groovy      | 43 +++++++++++++++++++
 .../spring/mock/DelegatingInterceptor.java    |  5 +++
 11 files changed, 127 insertions(+), 4 deletions(-)
 create mode 100644 spock-specs/src/test/groovy/org/spockframework/smoke/mock/InteractionScopeMatching.groovy

diff --git a/spock-core/src/main/java/org/spockframework/mock/IMockConfiguration.java b/spock-core/src/main/java/org/spockframework/mock/IMockConfiguration.java
index 337b15fc7e..8bff772008 100644
--- a/spock-core/src/main/java/org/spockframework/mock/IMockConfiguration.java
+++ b/spock-core/src/main/java/org/spockframework/mock/IMockConfiguration.java
@@ -88,6 +88,14 @@ public interface IMockConfiguration {
    */
   IDefaultResponse getDefaultResponse();
 
+  /**
+   * Tells whether this mock object supports last defined return value.
+   * By default Spock uses a match first algorithm to determine the defined return value of a method.
+   *
+   * @return whether this mock object supports last matched response
+   */
+  boolean useLastMatchResponseStrategy();
+
   /**
    * Tells whether a mock object stands in for all objects of the mocked type, or just for itself.
    * This is an optional feature that may not be supported by a particular {@link MockImplementation}.
diff --git a/spock-core/src/main/java/org/spockframework/mock/IMockObject.java b/spock-core/src/main/java/org/spockframework/mock/IMockObject.java
index b7f77fb46e..e1a37fd852 100644
--- a/spock-core/src/main/java/org/spockframework/mock/IMockObject.java
+++ b/spock-core/src/main/java/org/spockframework/mock/IMockObject.java
@@ -65,6 +65,14 @@ public interface IMockObject extends SpecificationAttachable {
    */
   IDefaultResponse getDefaultResponse();
 
+  /**
+   * Tells whether this mock object supports last defined return value.
+   * By default Spock uses a match first algorithm to determine the defined return value of a method.
+   *
+   * @return whether this mock object supports last matched response
+   */
+  boolean useLastMatchResponseStrategy();
+
   /**
    * Returns the specification that this mock object is attached to.
    *
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockInterceptor.java b/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockInterceptor.java
index 3b2b0b96a2..f9b9152d96 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockInterceptor.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockInterceptor.java
@@ -37,7 +37,8 @@ public GroovyMockInterceptor(IMockConfiguration mockConfiguration, Specification
   @Override
   public Object intercept(Object target, Method method, Object[] arguments, IResponseGenerator realMethodInvoker) {
     IMockObject mockObject = new MockObject(mockConfiguration.getName(), mockConfiguration.getExactType(), target,
-      mockConfiguration.isVerified(), mockConfiguration.isGlobal(), mockConfiguration.getDefaultResponse(), specification, this);
+      mockConfiguration.isVerified(), mockConfiguration.isGlobal(), mockConfiguration.getDefaultResponse(),
+      mockConfiguration.useLastMatchResponseStrategy(), specification, this);
 
     if (method.getDeclaringClass() == ISpockMockObject.class) {
       return mockObject;
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockMetaClass.java b/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockMetaClass.java
index a484ca3300..0b9d4ac277 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockMetaClass.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockMetaClass.java
@@ -116,7 +116,8 @@ private boolean isGetMetaClassCallOnGroovyObject(Object target, String method, O
   private IMockInvocation createMockInvocation(MetaMethod metaMethod, Object target,
       String methodName, Object[] arguments, boolean isStatic) {
     IMockObject mockObject = new MockObject(configuration.getName(), configuration.getExactType(), target,
-        configuration.isVerified(), configuration.isGlobal(), configuration.getDefaultResponse(), specification, this);
+        configuration.isVerified(), configuration.isGlobal(), configuration.getDefaultResponse(),
+        configuration.useLastMatchResponseStrategy(), specification, this);
     IMockMethod mockMethod;
     if (metaMethod != null) {
       List<Type> parameterTypes = Arrays.<Type>asList(metaMethod.getNativeParameterTypes());
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/InteractionScope.java b/spock-core/src/main/java/org/spockframework/mock/runtime/InteractionScope.java
index 99e7224968..daf60536a0 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/InteractionScope.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/InteractionScope.java
@@ -83,6 +83,14 @@ public void addUnmatchedInvocation(IMockInvocation invocation) {
 
   @Override
   public IMockInteraction match(IMockInvocation invocation) {
+    final IMockObject mockObject = invocation.getMockObject();
+    if (mockObject.useLastMatchResponseStrategy())
+      return lastMatchStrategy(invocation);
+
+    return firstMatchStrategy(invocation);
+  }
+
+  private IMockInteraction firstMatchStrategy(IMockInvocation invocation) {
     IMockInteraction firstMatch = null;
     for (IMockInteraction interaction : interactions)
       if (interaction.matches(invocation)) {
@@ -93,6 +101,17 @@ public IMockInteraction match(IMockInvocation invocation) {
     return firstMatch;
   }
 
+  private IMockInteraction lastMatchStrategy(IMockInvocation invocation) {
+    IMockInteraction lastMatch = null;
+    for (IMockInteraction interaction : interactions)
+      if (interaction.matches(invocation)) {
+        if (!interaction.isExhausted() || lastMatch == null)
+          lastMatch = interaction;
+      }
+
+    return lastMatch;
+  }
+
   @Override
   public void verifyInteractions() {
     List<IMockInteraction> unsatisfiedInteractions = new ArrayList<>();
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/JavaMockInterceptor.java b/spock-core/src/main/java/org/spockframework/mock/runtime/JavaMockInterceptor.java
index af2d042e44..2381ffe78a 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/JavaMockInterceptor.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/JavaMockInterceptor.java
@@ -38,7 +38,8 @@ public JavaMockInterceptor(IMockConfiguration mockConfiguration, Specification s
   @Override
   public Object intercept(Object target, Method method, Object[] arguments, IResponseGenerator realMethodInvoker) {
     IMockObject mockObject = new MockObject(mockConfiguration.getName(), mockConfiguration.getExactType(),
-      target, mockConfiguration.isVerified(), false, mockConfiguration.getDefaultResponse(), specification, this);
+      target, mockConfiguration.isVerified(), false, mockConfiguration.getDefaultResponse(),
+      mockConfiguration.useLastMatchResponseStrategy(), specification, this);
 
     if (method.getDeclaringClass() == ISpockMockObject.class) {
       return mockObject;
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/MockConfiguration.java b/spock-core/src/main/java/org/spockframework/mock/runtime/MockConfiguration.java
index 76afefc530..445b72df3c 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/MockConfiguration.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/MockConfiguration.java
@@ -31,6 +31,7 @@ public class MockConfiguration implements IMockConfiguration {
   private final List<Object> constructorArgs;
   private final List<Class<?>> additionalInterfaces;
   private final IDefaultResponse defaultResponse;
+  private final boolean useLastMatchResponseStrategy;
   private final boolean global;
   private final boolean verified;
   private final boolean useObjenesis;
@@ -51,6 +52,7 @@ public MockConfiguration(@Nullable String name, Type type, @Nullable Object inst
     this.constructorArgs = getOptionAsList(options, "constructorArgs");
     this.additionalInterfaces = getOption(options, "additionalInterfaces", List.class, Collections.emptyList());
     this.defaultResponse = getOption(options, "defaultResponse", IDefaultResponse.class, this.nature.getDefaultResponse());
+    this.useLastMatchResponseStrategy = getOption(options, "useLastMatchResponseStrategy", Boolean.class, false);
     this.global = getOption(options, "global", Boolean.class, false);
     this.verified = getOption(options, "verified", Boolean.class, this.nature.isVerified());
     this.useObjenesis = getOption(options, "useObjenesis", Boolean.class, this.nature.isUseObjenesis());
@@ -103,6 +105,11 @@ public IDefaultResponse getDefaultResponse() {
     return defaultResponse;
   }
 
+  @Override
+  public boolean useLastMatchResponseStrategy() {
+    return useLastMatchResponseStrategy;
+  }
+
   @Override
   public boolean isGlobal() {
     return global;
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/MockObject.java b/spock-core/src/main/java/org/spockframework/mock/runtime/MockObject.java
index 55dad1b4d0..c3514fb91b 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/MockObject.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/MockObject.java
@@ -30,18 +30,21 @@ public class MockObject implements IMockObject {
   private final boolean verified;
   private final boolean global;
   private final IDefaultResponse defaultResponse;
+  private final boolean useLastMatchResponseStrategy;
   private final SpecificationAttachable mockInterceptor;
 
   private Specification specification;
 
   public MockObject(@Nullable String name, Type type, Object instance, boolean verified, boolean global,
-      IDefaultResponse defaultResponse, Specification specification, SpecificationAttachable mockInterceptor) {
+      IDefaultResponse defaultResponse, boolean useLastMatchResponseStrategy, Specification specification,
+      SpecificationAttachable mockInterceptor) {
     this.name = name;
     this.type = type;
     this.instance = instance;
     this.verified = verified;
     this.global = global;
     this.defaultResponse = defaultResponse;
+    this.useLastMatchResponseStrategy = useLastMatchResponseStrategy;
     this.specification = specification;
     this.mockInterceptor = mockInterceptor;
   }
@@ -77,6 +80,11 @@ public IDefaultResponse getDefaultResponse() {
     return defaultResponse;
   }
 
+  @Override
+  public boolean useLastMatchResponseStrategy() {
+    return useLastMatchResponseStrategy;
+  }
+
   @Override
   public Specification getSpecification() {
     return specification;
diff --git a/spock-core/src/main/java/spock/mock/MockingApi.java b/spock-core/src/main/java/spock/mock/MockingApi.java
index d20fdddcb1..ba0f66e7e0 100644
--- a/spock-core/src/main/java/spock/mock/MockingApi.java
+++ b/spock-core/src/main/java/spock/mock/MockingApi.java
@@ -170,6 +170,7 @@ public <T> T Mock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -222,6 +223,7 @@ public <T> T Mock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -390,6 +392,7 @@ public <T> T Stub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -443,6 +446,7 @@ public <T> T Stub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -502,6 +506,7 @@ public <T> T Stub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -568,6 +573,7 @@ public <T> T Stub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -619,6 +625,7 @@ public <T> T Spy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -726,6 +733,7 @@ public <T> T Spy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -783,6 +791,7 @@ public <T> T Spy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -848,6 +857,7 @@ public <T> T Spy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -899,6 +909,7 @@ public <T> T GroovyMock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -951,6 +962,7 @@ public <T> T GroovyMock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1011,6 +1023,7 @@ public <T> T GroovyMock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1078,6 +1091,7 @@ public <T> T GroovyMock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1130,6 +1144,7 @@ public <T> T GroovyStub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1182,6 +1197,7 @@ public <T> T GroovyStub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1242,6 +1258,7 @@ public <T> T GroovyStub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1309,6 +1326,7 @@ public <T> T GroovyStub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1361,6 +1379,7 @@ public <T> T GroovySpy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1413,6 +1432,7 @@ public <T> T GroovySpy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1471,6 +1491,7 @@ public <T> T GroovySpy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1537,6 +1558,7 @@ public <T> T GroovySpy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
diff --git a/spock-specs/src/test/groovy/org/spockframework/smoke/mock/InteractionScopeMatching.groovy b/spock-specs/src/test/groovy/org/spockframework/smoke/mock/InteractionScopeMatching.groovy
new file mode 100644
index 0000000000..70841438b9
--- /dev/null
+++ b/spock-specs/src/test/groovy/org/spockframework/smoke/mock/InteractionScopeMatching.groovy
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.spockframework.smoke.mock
+
+import spock.lang.Specification
+
+/**
+ *
+ * @author Kamil Jędrzejuk
+ */
+class InteractionScopeMatching extends Specification {
+  List defaultMockBehaviour = Mock()
+  List withOverrideLastResponse = Mock([useLastMatchResponseStrategy:true])
+
+  def setup() {
+    defaultMockBehaviour.size() >> 1
+    withOverrideLastResponse.size() >> 1
+  }
+
+  def "interactions should use response matching algorithm depends on passed useLastMatchResponseStrategy flag when determining the stubbed reply"() {
+    given:
+    defaultMockBehaviour.size() >> 2
+    withOverrideLastResponse.size() >> 2
+
+    expect:
+    defaultMockBehaviour.size() == 1
+    withOverrideLastResponse.size() == 2
+  }
+}
diff --git a/spock-spring/src/main/java/org/spockframework/spring/mock/DelegatingInterceptor.java b/spock-spring/src/main/java/org/spockframework/spring/mock/DelegatingInterceptor.java
index 9cae949d2f..727c9974c0 100644
--- a/spock-spring/src/main/java/org/spockframework/spring/mock/DelegatingInterceptor.java
+++ b/spock-spring/src/main/java/org/spockframework/spring/mock/DelegatingInterceptor.java
@@ -116,6 +116,11 @@ public IDefaultResponse getDefaultResponse() {
       return null;
     }
 
+    @Override
+    public boolean useLastMatchResponseStrategy() {
+      return false;
+    }
+
     @Override
     public Specification getSpecification() {
       return null;

From 8bd0ea247a9c4763cdb9c54e74d0ef830e6c4dd5 Mon Sep 17 00:00:00 2001
From: Kamil Jedrzejuk <kamil.jedrzejuk@allegro.pl>
Date: Wed, 7 Apr 2021 22:38:12 +0200
Subject: [PATCH 2/2] Added configurable interaction matching.

Added 'last match algorithm' to determine the defined return value of a
method. This enables easy overriding of default return values. As
requested in issue #26, #251, #321 and #962.
---
 .../mock/IMockConfiguration.java              |  8 ++++
 .../org/spockframework/mock/IMockObject.java  |  8 ++++
 .../mock/runtime/GroovyMockInterceptor.java   |  3 +-
 .../mock/runtime/GroovyMockMetaClass.java     |  3 +-
 .../mock/runtime/InteractionScope.java        | 19 ++++++++
 .../mock/runtime/JavaMockInterceptor.java     |  3 +-
 .../mock/runtime/MockConfiguration.java       |  7 +++
 .../mock/runtime/MockObject.java              | 10 +++-
 .../src/main/java/spock/mock/MockingApi.java  | 22 +++++++++
 .../mock/InteractionScopeMatching.groovy      | 46 +++++++++++++++++++
 .../spring/mock/DelegatingInterceptor.java    |  5 ++
 11 files changed, 130 insertions(+), 4 deletions(-)
 create mode 100644 spock-specs/src/test/groovy/org/spockframework/smoke/mock/InteractionScopeMatching.groovy

diff --git a/spock-core/src/main/java/org/spockframework/mock/IMockConfiguration.java b/spock-core/src/main/java/org/spockframework/mock/IMockConfiguration.java
index 337b15fc7e..8bff772008 100644
--- a/spock-core/src/main/java/org/spockframework/mock/IMockConfiguration.java
+++ b/spock-core/src/main/java/org/spockframework/mock/IMockConfiguration.java
@@ -88,6 +88,14 @@ public interface IMockConfiguration {
    */
   IDefaultResponse getDefaultResponse();
 
+  /**
+   * Tells whether this mock object supports last defined return value.
+   * By default Spock uses a match first algorithm to determine the defined return value of a method.
+   *
+   * @return whether this mock object supports last matched response
+   */
+  boolean useLastMatchResponseStrategy();
+
   /**
    * Tells whether a mock object stands in for all objects of the mocked type, or just for itself.
    * This is an optional feature that may not be supported by a particular {@link MockImplementation}.
diff --git a/spock-core/src/main/java/org/spockframework/mock/IMockObject.java b/spock-core/src/main/java/org/spockframework/mock/IMockObject.java
index b7f77fb46e..e1a37fd852 100644
--- a/spock-core/src/main/java/org/spockframework/mock/IMockObject.java
+++ b/spock-core/src/main/java/org/spockframework/mock/IMockObject.java
@@ -65,6 +65,14 @@ public interface IMockObject extends SpecificationAttachable {
    */
   IDefaultResponse getDefaultResponse();
 
+  /**
+   * Tells whether this mock object supports last defined return value.
+   * By default Spock uses a match first algorithm to determine the defined return value of a method.
+   *
+   * @return whether this mock object supports last matched response
+   */
+  boolean useLastMatchResponseStrategy();
+
   /**
    * Returns the specification that this mock object is attached to.
    *
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockInterceptor.java b/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockInterceptor.java
index 3b2b0b96a2..f9b9152d96 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockInterceptor.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockInterceptor.java
@@ -37,7 +37,8 @@ public GroovyMockInterceptor(IMockConfiguration mockConfiguration, Specification
   @Override
   public Object intercept(Object target, Method method, Object[] arguments, IResponseGenerator realMethodInvoker) {
     IMockObject mockObject = new MockObject(mockConfiguration.getName(), mockConfiguration.getExactType(), target,
-      mockConfiguration.isVerified(), mockConfiguration.isGlobal(), mockConfiguration.getDefaultResponse(), specification, this);
+      mockConfiguration.isVerified(), mockConfiguration.isGlobal(), mockConfiguration.getDefaultResponse(),
+      mockConfiguration.useLastMatchResponseStrategy(), specification, this);
 
     if (method.getDeclaringClass() == ISpockMockObject.class) {
       return mockObject;
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockMetaClass.java b/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockMetaClass.java
index a484ca3300..0b9d4ac277 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockMetaClass.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/GroovyMockMetaClass.java
@@ -116,7 +116,8 @@ private boolean isGetMetaClassCallOnGroovyObject(Object target, String method, O
   private IMockInvocation createMockInvocation(MetaMethod metaMethod, Object target,
       String methodName, Object[] arguments, boolean isStatic) {
     IMockObject mockObject = new MockObject(configuration.getName(), configuration.getExactType(), target,
-        configuration.isVerified(), configuration.isGlobal(), configuration.getDefaultResponse(), specification, this);
+        configuration.isVerified(), configuration.isGlobal(), configuration.getDefaultResponse(),
+        configuration.useLastMatchResponseStrategy(), specification, this);
     IMockMethod mockMethod;
     if (metaMethod != null) {
       List<Type> parameterTypes = Arrays.<Type>asList(metaMethod.getNativeParameterTypes());
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/InteractionScope.java b/spock-core/src/main/java/org/spockframework/mock/runtime/InteractionScope.java
index 99e7224968..daf60536a0 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/InteractionScope.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/InteractionScope.java
@@ -83,6 +83,14 @@ public void addUnmatchedInvocation(IMockInvocation invocation) {
 
   @Override
   public IMockInteraction match(IMockInvocation invocation) {
+    final IMockObject mockObject = invocation.getMockObject();
+    if (mockObject.useLastMatchResponseStrategy())
+      return lastMatchStrategy(invocation);
+
+    return firstMatchStrategy(invocation);
+  }
+
+  private IMockInteraction firstMatchStrategy(IMockInvocation invocation) {
     IMockInteraction firstMatch = null;
     for (IMockInteraction interaction : interactions)
       if (interaction.matches(invocation)) {
@@ -93,6 +101,17 @@ public IMockInteraction match(IMockInvocation invocation) {
     return firstMatch;
   }
 
+  private IMockInteraction lastMatchStrategy(IMockInvocation invocation) {
+    IMockInteraction lastMatch = null;
+    for (IMockInteraction interaction : interactions)
+      if (interaction.matches(invocation)) {
+        if (!interaction.isExhausted() || lastMatch == null)
+          lastMatch = interaction;
+      }
+
+    return lastMatch;
+  }
+
   @Override
   public void verifyInteractions() {
     List<IMockInteraction> unsatisfiedInteractions = new ArrayList<>();
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/JavaMockInterceptor.java b/spock-core/src/main/java/org/spockframework/mock/runtime/JavaMockInterceptor.java
index af2d042e44..2381ffe78a 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/JavaMockInterceptor.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/JavaMockInterceptor.java
@@ -38,7 +38,8 @@ public JavaMockInterceptor(IMockConfiguration mockConfiguration, Specification s
   @Override
   public Object intercept(Object target, Method method, Object[] arguments, IResponseGenerator realMethodInvoker) {
     IMockObject mockObject = new MockObject(mockConfiguration.getName(), mockConfiguration.getExactType(),
-      target, mockConfiguration.isVerified(), false, mockConfiguration.getDefaultResponse(), specification, this);
+      target, mockConfiguration.isVerified(), false, mockConfiguration.getDefaultResponse(),
+      mockConfiguration.useLastMatchResponseStrategy(), specification, this);
 
     if (method.getDeclaringClass() == ISpockMockObject.class) {
       return mockObject;
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/MockConfiguration.java b/spock-core/src/main/java/org/spockframework/mock/runtime/MockConfiguration.java
index 76afefc530..445b72df3c 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/MockConfiguration.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/MockConfiguration.java
@@ -31,6 +31,7 @@ public class MockConfiguration implements IMockConfiguration {
   private final List<Object> constructorArgs;
   private final List<Class<?>> additionalInterfaces;
   private final IDefaultResponse defaultResponse;
+  private final boolean useLastMatchResponseStrategy;
   private final boolean global;
   private final boolean verified;
   private final boolean useObjenesis;
@@ -51,6 +52,7 @@ public MockConfiguration(@Nullable String name, Type type, @Nullable Object inst
     this.constructorArgs = getOptionAsList(options, "constructorArgs");
     this.additionalInterfaces = getOption(options, "additionalInterfaces", List.class, Collections.emptyList());
     this.defaultResponse = getOption(options, "defaultResponse", IDefaultResponse.class, this.nature.getDefaultResponse());
+    this.useLastMatchResponseStrategy = getOption(options, "useLastMatchResponseStrategy", Boolean.class, false);
     this.global = getOption(options, "global", Boolean.class, false);
     this.verified = getOption(options, "verified", Boolean.class, this.nature.isVerified());
     this.useObjenesis = getOption(options, "useObjenesis", Boolean.class, this.nature.isUseObjenesis());
@@ -103,6 +105,11 @@ public IDefaultResponse getDefaultResponse() {
     return defaultResponse;
   }
 
+  @Override
+  public boolean useLastMatchResponseStrategy() {
+    return useLastMatchResponseStrategy;
+  }
+
   @Override
   public boolean isGlobal() {
     return global;
diff --git a/spock-core/src/main/java/org/spockframework/mock/runtime/MockObject.java b/spock-core/src/main/java/org/spockframework/mock/runtime/MockObject.java
index 55dad1b4d0..c3514fb91b 100644
--- a/spock-core/src/main/java/org/spockframework/mock/runtime/MockObject.java
+++ b/spock-core/src/main/java/org/spockframework/mock/runtime/MockObject.java
@@ -30,18 +30,21 @@ public class MockObject implements IMockObject {
   private final boolean verified;
   private final boolean global;
   private final IDefaultResponse defaultResponse;
+  private final boolean useLastMatchResponseStrategy;
   private final SpecificationAttachable mockInterceptor;
 
   private Specification specification;
 
   public MockObject(@Nullable String name, Type type, Object instance, boolean verified, boolean global,
-      IDefaultResponse defaultResponse, Specification specification, SpecificationAttachable mockInterceptor) {
+      IDefaultResponse defaultResponse, boolean useLastMatchResponseStrategy, Specification specification,
+      SpecificationAttachable mockInterceptor) {
     this.name = name;
     this.type = type;
     this.instance = instance;
     this.verified = verified;
     this.global = global;
     this.defaultResponse = defaultResponse;
+    this.useLastMatchResponseStrategy = useLastMatchResponseStrategy;
     this.specification = specification;
     this.mockInterceptor = mockInterceptor;
   }
@@ -77,6 +80,11 @@ public IDefaultResponse getDefaultResponse() {
     return defaultResponse;
   }
 
+  @Override
+  public boolean useLastMatchResponseStrategy() {
+    return useLastMatchResponseStrategy;
+  }
+
   @Override
   public Specification getSpecification() {
     return specification;
diff --git a/spock-core/src/main/java/spock/mock/MockingApi.java b/spock-core/src/main/java/spock/mock/MockingApi.java
index d20fdddcb1..ba0f66e7e0 100644
--- a/spock-core/src/main/java/spock/mock/MockingApi.java
+++ b/spock-core/src/main/java/spock/mock/MockingApi.java
@@ -170,6 +170,7 @@ public <T> T Mock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -222,6 +223,7 @@ public <T> T Mock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -390,6 +392,7 @@ public <T> T Stub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -443,6 +446,7 @@ public <T> T Stub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -502,6 +506,7 @@ public <T> T Stub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -568,6 +573,7 @@ public <T> T Stub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -619,6 +625,7 @@ public <T> T Spy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -726,6 +733,7 @@ public <T> T Spy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -783,6 +791,7 @@ public <T> T Spy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -848,6 +857,7 @@ public <T> T Spy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class)
     })
@@ -899,6 +909,7 @@ public <T> T GroovyMock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -951,6 +962,7 @@ public <T> T GroovyMock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1011,6 +1023,7 @@ public <T> T GroovyMock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1078,6 +1091,7 @@ public <T> T GroovyMock(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1130,6 +1144,7 @@ public <T> T GroovyStub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1182,6 +1197,7 @@ public <T> T GroovyStub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1242,6 +1258,7 @@ public <T> T GroovyStub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1309,6 +1326,7 @@ public <T> T GroovyStub(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1361,6 +1379,7 @@ public <T> T GroovySpy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1413,6 +1432,7 @@ public <T> T GroovySpy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1471,6 +1491,7 @@ public <T> T GroovySpy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
@@ -1537,6 +1558,7 @@ public <T> T GroovySpy(
       @NamedParam(value = "name", type = String.class),
       @NamedParam(value = "additionalInterfaces", type = List.class),
       @NamedParam(value = "defaultResponse", type = IDefaultResponse.class),
+      @NamedParam(value = "useLastMatchResponseStrategy", type = Boolean.class),
       @NamedParam(value = "verified", type = Boolean.class),
       @NamedParam(value = "useObjenesis", type = Boolean.class),
       @NamedParam(value = "global", type = Boolean.class)
diff --git a/spock-specs/src/test/groovy/org/spockframework/smoke/mock/InteractionScopeMatching.groovy b/spock-specs/src/test/groovy/org/spockframework/smoke/mock/InteractionScopeMatching.groovy
new file mode 100644
index 0000000000..07f8800d0b
--- /dev/null
+++ b/spock-specs/src/test/groovy/org/spockframework/smoke/mock/InteractionScopeMatching.groovy
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.spockframework.smoke.mock
+
+import spock.lang.Specification
+
+/**
+ *
+ * @author Kamil Jędrzejuk
+ */
+class InteractionScopeMatching extends Specification {
+  List defaultMockBehaviour = Mock()
+  List withOverrideLastResponse = Mock([useLastMatchResponseStrategy:true])
+
+  def setup() {
+    defaultMockBehaviour.size() >> 1
+    withOverrideLastResponse.size() >> 1
+  }
+
+  def "interactions should use response matching algorithm depends on passed useLastMatchResponseStrategy flag when determining the stubbed reply"() {
+    given:
+    defaultMockBehaviour.size() >> 2
+    withOverrideLastResponse.size() >> 2
+
+    and:
+    withOverrideLastResponse.size() >> 3
+
+    expect:
+    defaultMockBehaviour.size() == 1
+    withOverrideLastResponse.size() == 3
+  }
+}
diff --git a/spock-spring/src/main/java/org/spockframework/spring/mock/DelegatingInterceptor.java b/spock-spring/src/main/java/org/spockframework/spring/mock/DelegatingInterceptor.java
index 9cae949d2f..727c9974c0 100644
--- a/spock-spring/src/main/java/org/spockframework/spring/mock/DelegatingInterceptor.java
+++ b/spock-spring/src/main/java/org/spockframework/spring/mock/DelegatingInterceptor.java
@@ -116,6 +116,11 @@ public IDefaultResponse getDefaultResponse() {
       return null;
     }
 
+    @Override
+    public boolean useLastMatchResponseStrategy() {
+      return false;
+    }
+
     @Override
     public Specification getSpecification() {
       return null;