CATROID-1350 Add test for post brick connection holder

catroid/src/test/java/org/catrobat/catroid/test/web/PostWebConnectionHolderTest.kt

@@ -0,0 +1,82 @@
+/*
+ * Catroid: An on-device visual programming system for Android devices
+ * Copyright (C) 2010-2022 The Catrobat Team
+ * (<http://developer.catrobat.org/credits>)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * An additional term exception under section 7 of the GNU Affero
+ * General Public License, version 3, is available at
+ * http://developer.catrobat.org/license_additional_term
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package org.catrobat.catroid.test.web
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.catrobat.catroid.web.PostWebConnection
+import org.catrobat.catroid.web.PostWebConnectionHolder
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.JUnit4
+import org.mockito.Mockito
+import java.util.Collections
+
+@RunWith(JUnit4::class)
+class PostWebConnectionHolderTest {
+    private lateinit var postwebConnection: PostWebConnection
+    private lateinit var postwebConnectionHolder: PostWebConnectionHolder
+
+    companion object {
+        private const val MAX_CONNECTIONS = 10
+    }
+
+    @Before
+    fun setUp() {
+        postwebConnection = Mockito.mock(PostWebConnection::class.java)
+        postwebConnectionHolder = PostWebConnectionHolder()
+    }
+
+    @Test
+    fun testAddConnection() {
+        assertTrue(postwebConnectionHolder.addConnection(postwebConnection))
+        assertEquals(postwebConnectionHolder.connections.size,1)
+    }
+
+    @Test
+    fun testAddConnectionOverLimit() {
+        postwebConnectionHolder.connections = ArrayList(
+            Collections.nCopies(MAX_CONNECTIONS -1, postwebConnection))
+        assertTrue(postwebConnectionHolder.addConnection(postwebConnection))
+        assertFalse(postwebConnectionHolder.addConnection(postwebConnection))
+        assertEquals(postwebConnectionHolder.connections.size, MAX_CONNECTIONS)
+    }
+
+    @Test
+    fun testRemoveConnection() {
+        assertTrue(postwebConnectionHolder.addConnection(postwebConnection))
+        postwebConnectionHolder.removeConnection(postwebConnection)
+        assertTrue(postwebConnectionHolder.connections.isEmpty())
+    }
+
+    @Test
+    fun testPostWebConnectionHolderOnPause() {
+        postwebConnectionHolder.connections = ArrayList(Collections.nCopies(5, postwebConnection))
+        postwebConnectionHolder.onPause()
+        assertTrue(postwebConnectionHolder.connections.isEmpty())
+        Mockito.verify(postwebConnection, Mockito.times(5)).cancelCall()
+    }
+}