add GradleTaskExecutor unit tests

Signed-off-by: Lennart Heimbs <[email protected]>

pitmutationmate/src/test/kotlin/com/amos/pitmutationmate/pitmutationmate/execution/GradleTaskExecutorTest.kt

@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: MIT
+// SPDX-FileCopyrightText: 2023 Lennart Heimbs
+
+package com.amos.pitmutationmate.pitmutationmate.execution
+
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.mockito.InjectMocks
+import org.mockito.Mock
+import org.mockito.Mockito.`when`
+import org.mockito.MockitoAnnotations
+
+/**
+ * Tests for GradleTaskExecutor
+ *
+ * @see GradleTaskExecutor
+ */
+class GradleTaskExecutorTest {
+    @Mock
+    lateinit var systemInfo: SystemInfoProvider // Assuming SystemInfo is a dependency
+
+    @InjectMocks
+    lateinit var gradleTaskExecutor: GradleTaskExecutor
+
+    @BeforeEach
+    fun setup() {
+        MockitoAnnotations.openMocks(this)
+    }
+
+    @Test
+    fun `test buildCommandLine for Windows`() {
+        `when`(systemInfo.isWindows()).thenReturn(true)
+
+        val commandLine = gradleTaskExecutor.buildCommandLine(
+            null,
+            "clean",
+            "/path/to/project",
+            "com.example.Class",
+            8080
+        )
+
+        assertEquals(GradleTaskExecutor.WINDOWS_SHELL_EXECUTABLE, commandLine.exePath)
+        assertEquals(GradleTaskExecutor.WINDOWS_FIRST_PARAMETER, commandLine.parametersList.parameters[0])
+        assertEquals(GradleTaskExecutor.WINDOWS_GRADLE_EXECUTABLE, commandLine.parametersList.parameters[1])
+    }
+
+    @Test
+    fun `test buildCommandLine for Unix`() {
+        `when`(systemInfo.isWindows()).thenReturn(false)
+
+        val commandLine = gradleTaskExecutor.buildCommandLine(
+            null,
+            "clean",
+            "/path/to/project",
+            "com.example.Class",
+            8080
+        )
+
+        assertEquals(GradleTaskExecutor.UNIX_SHELL_EXECUTABLE, commandLine.exePath)
+        assertEquals(GradleTaskExecutor.UNIX_FIRST_PARAMETER, commandLine.parametersList.parameters[0])
+        assertEquals(GradleTaskExecutor.UNIX_GRADLE_EXECUTABLE, commandLine.parametersList.parameters[1])
+    }
+
+    @Test
+    fun `test buildCommandLine without taskName uses default taskName`() {
+        `when`(systemInfo.isWindows()).thenReturn(true)
+
+        val commandLine = gradleTaskExecutor.buildCommandLine(
+            null,
+            null,
+            "/path/to/project",
+            "com.example.Class",
+            8080
+        )
+
+        assertEquals(GradleTaskExecutor.PITEST_TASK_NAME, commandLine.parametersList.parameters[2])
+    }
+
+    @Test
+    fun `test buildCommandLine with taskName uses given taskName`() {
+        `when`(systemInfo.isWindows()).thenReturn(true)
+
+        val taskName = "test123"
+        val commandLine = gradleTaskExecutor.buildCommandLine(
+            null,
+            taskName,
+            "/path/to/project",
+            "com.example.Class",
+            8080
+        )
+
+        assertEquals(taskName, commandLine.parametersList.parameters[2])
+    }
+
+    @Test
+    fun `test buildCommandLine without classFQDN does not add targetClass override`() {
+        `when`(systemInfo.isWindows()).thenReturn(true)
+
+        val commandLine = gradleTaskExecutor.buildCommandLine(
+            null,
+            "clean",
+            "/path/to/project",
+            null,
+            8080
+        )
+
+        for (parameter in commandLine.parametersList.parameters) {
+            assertFalse(parameter.contains("-Dpitmutationmate.override.targetClasses"))
+        }
+    }
+
+    @Test
+    fun `test buildCommandLine with classFQDN adds targetClass override`() {
+        `when`(systemInfo.isWindows()).thenReturn(true)
+
+        val classFQN = "com.example.Class"
+        val commandLine = gradleTaskExecutor.buildCommandLine(
+            null,
+            "clean",
+            "/path/to/project",
+            classFQN,
+            8080
+        )
+
+        assertTrue(
+            commandLine.parametersList.parameters.contains("-Dpitmutationmate.override.targetClasses=$classFQN")
+        )
+    }
+}