Add ContainsPattern Quality, closes #72

confidence-core/src/main/java/org/saynotobugs/confidence/quality/charsequence/ContainsPattern.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2022 dmfs GmbH
+ *
+ *
+ * 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.saynotobugs.confidence.quality.charsequence;
+
+import org.dmfs.srcless.annotations.staticfactory.StaticFactories;
+import org.saynotobugs.confidence.description.CharSequenceDescription;
+import org.saynotobugs.confidence.description.Spaced;
+import org.saynotobugs.confidence.description.Text;
+import org.saynotobugs.confidence.description.Value;
+import org.saynotobugs.confidence.quality.composite.QualityComposition;
+import org.saynotobugs.confidence.quality.object.Satisfies;
+
+import java.util.regex.Pattern;
+
+
+@StaticFactories(value = "Core", packageName = "org.saynotobugs.confidence.quality")
+public final class ContainsPattern extends QualityComposition<CharSequence>
+{
+    public ContainsPattern(String pattern)
+    {
+        this(Pattern.compile(pattern));
+    }
+
+
+    public ContainsPattern(Pattern pattern)
+    {
+        super(new Satisfies<>(
+            actual -> pattern.matcher(actual).find(),
+            actual -> new Spaced(new CharSequenceDescription(actual), new Text("did not contain pattern"), new Value(pattern)),
+            new Spaced(new Text("contains pattern"), new Value(pattern))));
+    }
+}

confidence-core/src/test/java/org/saynotobugs/confidence/quality/charsequence/ContainsPatternTest.java

@@ -0,0 +1,25 @@
+package org.saynotobugs.confidence.quality.charsequence;
+
+import org.junit.jupiter.api.Test;
+import org.saynotobugs.confidence.quality.composite.AllOf;
+import org.saynotobugs.confidence.test.quality.Fails;
+import org.saynotobugs.confidence.test.quality.HasDescription;
+import org.saynotobugs.confidence.test.quality.Passes;
+
+import static org.saynotobugs.confidence.Assertion.assertThat;
+
+
+class ContainsPatternTest
+{
+    @Test
+    void test()
+    {
+        assertThat(new ContainsPattern("123"),
+            new AllOf<>(
+                new Passes<>("123", "abc123xyz"),
+                new Fails<>("12", "\"12\" did not contain pattern /123/"),
+                new Fails<>("abc", "\"abc\" did not contain pattern /123/"),
+                new HasDescription("contains pattern /123/")
+            ));
+    }
+}