Add summary tests for ListWrapperReturnsVoidExample (#444)

* Add summary tests for ListWrapperReturnsVoidExample

* Review fixes: add KDoc with the link to the corresponding issue on GitHub

Author: onewhl

utbot-summary-tests/src/test/kotlin/examples/collections/SummaryListWrapperReturnsVoidTest.kt

@@ -0,0 +1,130 @@
+package examples.collections
+
+import examples.SummaryTestCaseGeneratorTest
+import org.junit.jupiter.api.Test
+import org.utbot.examples.DoNotCalculate
+import org.utbot.examples.collections.ListWrapperReturnsVoidExample
+import org.utbot.framework.plugin.api.MockStrategyApi
+
+/**
+ * Tests verify that the previously discovered bug is not reproducible anymore.
+ *
+ * To get more details, see [issue-437](https://github.com/UnitTestBot/UTBotJava/issues/437)
+ */
+class SummaryListWrapperReturnsVoidTest : SummaryTestCaseGeneratorTest(
+    ListWrapperReturnsVoidExample::class,
+) {
+    @Test
+    fun testRunForEach() {
+        val summary1 = "Test throws NullPointerException in: list.forEach(o -> {\n" +
+                "    if (o == null)\n" +
+                "        i[0]++;\n" +
+                "});"
+        val summary2 = "Test returns from: return i[0];"
+        val summary3 = "Test returns from: return i[0];"
+        val summary4 = "Test returns from: return i[0];"
+
+        val methodName1 = "testRunForEach_ThrowNullPointerException"
+        val methodName2 = "testRunForEach_Return0OfI"
+        val methodName3 = "testRunForEach_Return0OfI_1"
+        val methodName4 = "testRunForEach_Return0OfI_2"
+
+        val displayName1 = "list.forEach(o -> { if (o == null) i[0]++ }) : True -> ThrowNullPointerException"
+        val displayName2 = "-> return i[0]"
+        val displayName3 = "-> return i[0]"
+        val displayName4 = "-> return i[0]"
+
+        val summaryKeys = listOf(
+            summary1,
+            summary2,
+            summary3,
+            summary4
+        )
+
+        val displayNames = listOf(
+            displayName1,
+            displayName2,
+            displayName3,
+            displayName4
+        )
+
+        val methodNames = listOf(
+            methodName1,
+            methodName2,
+            methodName3,
+            methodName4
+        )
+
+        val method = ListWrapperReturnsVoidExample::runForEach
+        val mockStrategy = MockStrategyApi.NO_MOCKS
+        val coverage = DoNotCalculate
+
+        check(method, mockStrategy, coverage, summaryKeys, methodNames, displayNames)
+    }
+
+    @Test
+    fun testSumPositiveForEach() {
+        val summary1 = "Test throws NullPointerException in: list.forEach(i -> {\n" +
+                "    if (i > 0) {\n" +
+                "        sum[0] += i;\n" +
+                "    }\n" +
+                "});"
+        val summary2 = "Test invokes: List::forEach once\n" +
+                "throws NullPointerException in: list.forEach(i -> {\n" +
+                "    if (i > 0) {\n" +
+                "        sum[0] += i;\n" +
+                "    }\n" +
+                "});"
+        val summary3 = "Test executes conditions:\n" +
+                "    (sum[0] == 0): True\n" +
+                "returns from: return 0;"
+        val summary4 = "Test executes conditions:\n" +
+                "    (sum[0] == 0): True\n" +
+                "returns from: return 0;"
+        val summary5 = "Test executes conditions:\n" +
+                "    (sum[0] == 0): False\n" +
+                "returns from: return sum[0];"
+
+        val methodName1 = "testSumPositiveForEach_ThrowNullPointerException"
+        val methodName2 = "testSumPositiveForEach_ListForEach"
+        val methodName3 = "testSumPositiveForEach_0OfSumEqualsZero"
+        val methodName4 = "testSumPositiveForEach_0OfSumEqualsZero_1"
+        val methodName5 = "testSumPositiveForEach_0OfSumNotEqualsZero"
+
+        val displayName1 = "list.forEach(i -> { if (i > 0) { sum[0] += i } }) : True -> ThrowNullPointerException"
+        val displayName2 = "list.forEach(i -> { if (i > 0) { sum[0] += i } }) : True -> ThrowNullPointerException"
+        val displayName3 = "sum[0] == 0 : True -> return 0"
+        val displayName4 = "sum[0] == 0 : True -> return 0"
+        val displayName5 = "sum[0] == 0 : False -> return sum[0]"
+
+        val summaryKeys = listOf(
+            summary1,
+            summary2,
+            summary3,
+            summary4,
+            summary5
+        )
+
+        val displayNames = listOf(
+            displayName1,
+            displayName2,
+            displayName3,
+            displayName4,
+            displayName5
+        )
+
+        val methodNames = listOf(
+            methodName1,
+            methodName2,
+            methodName3,
+            methodName4,
+            methodName5
+        )
+
+        val method = ListWrapperReturnsVoidExample::sumPositiveForEach
+        val mockStrategy = MockStrategyApi.NO_MOCKS
+        val coverage = DoNotCalculate
+
+        check(method, mockStrategy, coverage, summaryKeys, methodNames, displayNames)
+    }
+}