Settings cannot be loaded because of NullPointerException #951 (#952)

Author: Vassiliy-Kudryashov

utbot-framework-api/src/main/kotlin/org/utbot/framework/plugin/api/Api.kt

@@ -1108,6 +1108,7 @@ open class TypeParameters(val parameters: List<ClassId> = emptyList())
 class WildcardTypeParameter : TypeParameters(emptyList())
 
 interface CodeGenerationSettingItem {
+    val id : String
     val displayName: String
     val description: String
 }
@@ -1120,20 +1121,23 @@ interface CodeGenerationSettingBox {
 }
 
 enum class MockStrategyApi(
+    override val id : String,
     override val displayName: String,
     override val description: String
 ) : CodeGenerationSettingItem {
-    NO_MOCKS("Do not mock", "Do not use mock frameworks at all"),
+    NO_MOCKS("No mocks", "Do not mock", "Do not use mock frameworks at all"),
     OTHER_PACKAGES(
+        "Other packages: Mockito",
         "Mock package environment",
         "Mock all classes outside the current package except system ones"
     ),
     OTHER_CLASSES(
+        "Other classes: Mockito",
         "Mock class environment",
         "Mock all classes outside the class under test except system ones"
     );
 
-    override fun toString() = displayName
+    override fun toString() = id
 
     // Get is mandatory because of the initialization order of the inheritors.
     // Otherwise, in some cases we could get an incorrect value
@@ -1144,20 +1148,23 @@ enum class MockStrategyApi(
 }
 
 enum class TreatOverflowAsError(
+    override val id : String,
     override val displayName: String,
     override val description: String,
 ) : CodeGenerationSettingItem {
     AS_ERROR(
+        id = "Treat overflows as errors",
         displayName = "Treat overflows as errors",
         description = "Generate tests that treat possible overflows in arithmetic operations as errors " +
                 "that throw Arithmetic Exception",
     ),
     IGNORE(
+        id = "Ignore overflows",
         displayName = "Ignore overflows",
         description = "Ignore possible overflows in arithmetic operations",
     );
 
-    override fun toString(): String = displayName
+    override fun toString(): String = id
 
     // Get is mandatory because of the initialization order of the inheritors.
     // Otherwise, in some cases we could get an incorrect value
@@ -1189,13 +1196,14 @@ enum class JavaDocCommentStyle(
 }
 
 enum class MockFramework(
+    override val id: String = "Mockito",
     override val displayName: String,
     override val description: String = "Use $displayName as mock framework",
     var isInstalled: Boolean = false
 ) : CodeGenerationSettingItem {
-    MOCKITO("Mockito");
+    MOCKITO(displayName = "Mockito");
 
-    override fun toString() = displayName
+    override fun toString() = id
 
     companion object : CodeGenerationSettingBox {
         override val defaultItem: MockFramework = MOCKITO
@@ -1204,11 +1212,12 @@ enum class MockFramework(
 }
 
 enum class CodegenLanguage(
+    override val id: String,
     override val displayName: String,
     @Suppress("unused") override val description: String = "Generate unit tests in $displayName"
 ) : CodeGenerationSettingItem {
-    JAVA(displayName = "Java"),
-    KOTLIN(displayName = "Kotlin (experimental)");
+    JAVA(id = "Java", displayName = "Java"),
+    KOTLIN(id = "Kotlin", displayName = "Kotlin (experimental)");
 
     enum class OperatingSystem {
         WINDOWS,
@@ -1247,7 +1256,7 @@ enum class CodegenLanguage(
             KOTLIN -> listOf(System.getenv("JAVA_HOME"), "bin", "java")
         }.joinToString(File.separator)
 
-    override fun toString(): String = displayName
+    override fun toString(): String = id
 
     fun getCompilationCommand(buildDirectory: String, classPath: String, sourcesFiles: List<String>): List<String> {
         val arguments = when (this) {

utbot-framework/src/main/kotlin/org/utbot/framework/codegen/Domain.kt

@@ -103,10 +103,11 @@ fun testFrameworkByName(testFramework: String): TestFramework =
  */
 sealed class StaticsMocking(
     var isConfigured: Boolean = false,
+    override val id: String,
     override val displayName: String,
     override val description: String = "Use static methods mocking"
 ) : CodeGenerationSettingItem {
-    override fun toString(): String = displayName
+    override fun toString(): String = id
 
     // Get is mandatory because of the initialization order of the inheritors.
     // Otherwise, in some cases we could get an incorrect value
@@ -119,11 +120,12 @@ sealed class StaticsMocking(
 }
 
 object NoStaticMocking : StaticsMocking(
+    id = "No static mocking",
     displayName = "No static mocking",
     description = "Do not use additional settings to mock static fields"
 )
 
-object MockitoStaticMocking : StaticsMocking(displayName = "Mockito static mocking") {
+object MockitoStaticMocking : StaticsMocking(id = "Mockito static mocking", displayName = "Mockito static mocking") {
 
     val mockedStaticClassId = BuiltinClassId(
         name = "org.mockito.MockedStatic",
@@ -170,6 +172,7 @@ object MockitoStaticMocking : StaticsMocking(displayName = "Mockito static mocki
 }
 
 sealed class TestFramework(
+    override val id: String,
     override val displayName: String,
     override val description: String = "Use $displayName as test framework",
 ) : CodeGenerationSettingItem {
@@ -235,7 +238,7 @@ sealed class TestFramework(
         additionalArguments: List<String>
     ): List<String>
 
-    override fun toString() = displayName
+    override fun toString() = id
 
     // Get is mandatory because of the initialization order of the inheritors.
     // Otherwise, in some cases we could get an incorrect value, i.e. allItems = [null, JUnit5, TestNg]
@@ -246,7 +249,7 @@ sealed class TestFramework(
     }
 }
 
-object TestNg : TestFramework(displayName = "TestNG") {
+object TestNg : TestFramework(id = "TestNG",displayName = "TestNG") {
     override val mainPackage: String = TEST_NG_PACKAGE
     override val testAnnotation: String = "@$mainPackage.Test"
     override val testAnnotationFqn: String = "$mainPackage.Test"
@@ -375,7 +378,7 @@ object TestNg : TestFramework(displayName = "TestNG") {
     """.trimIndent()
 }
 
-object Junit4 : TestFramework("JUnit4") {
+object Junit4 : TestFramework(id = "JUnit4",displayName = "JUnit4") {
     private val parametrizedTestsNotSupportedError: Nothing
         get() = error("Parametrized tests are not supported for JUnit4")
 
@@ -448,7 +451,7 @@ object Junit4 : TestFramework("JUnit4") {
     }
 }
 
-object Junit5 : TestFramework("JUnit5") {
+object Junit5 : TestFramework(id = "JUnit5", displayName = "JUnit5") {
     override val mainPackage: String = JUNIT5_PACKAGE
     override val testAnnotation = "@$mainPackage.Test"
     override val testAnnotationFqn: String = "$mainPackage.Test"
@@ -589,20 +592,23 @@ object Junit5 : TestFramework("JUnit5") {
 }
 
 enum class RuntimeExceptionTestsBehaviour(
+    override val id: String,
     override val displayName: String,
     override val description: String
 ) : CodeGenerationSettingItem {
     PASS(
+        id = "Passing",
         displayName = "Pass",
         description = "Tests that produce Runtime exceptions should pass (by inserting throwable assertion)"
     ),
     FAIL(
+        id = "Failing",
         displayName = "Fail",
         description = "Tests that produce Runtime exceptions should fail" +
                 "(WARNING!: failing tests may appear in testing class)"
     );
 
-    override fun toString(): String = displayName
+    override fun toString(): String = id
 
     // Get is mandatory because of the initialization order of the inheritors.
     // Otherwise, in some cases we could get an incorrect value
@@ -623,11 +629,13 @@ data class HangingTestsTimeout(val timeoutMs: Long) {
 }
 
 enum class ForceStaticMocking(
+    override val id: String,
     override val displayName: String,
     override val description: String,
     val warningMessage: List<String>,
 ) : CodeGenerationSettingItem {
     FORCE(
+        id = "Force static mocking",
         displayName = "Force static mocking",
         description = "Use mocks for static methods and constructors invocations even if static mocking is disabled" +
                 "(WARNING!: can add imports from missing dependencies)",
@@ -638,6 +646,7 @@ enum class ForceStaticMocking(
         )
     ),
     DO_NOT_FORCE(
+        id = "Do not force static mocking",
         displayName = "Do not force static mocking",
         description = "Do not force static mocking if static mocking setting is disabled" +
                 "(WARNING!: flaky tests can appear)",
@@ -647,7 +656,7 @@ enum class ForceStaticMocking(
         )
     );
 
-    override fun toString(): String = displayName
+    override fun toString(): String = id
 
     // Get is mandatory because of the initialization order of the inheritors.
     // Otherwise, in some cases we could get an incorrect value
@@ -658,19 +667,22 @@ enum class ForceStaticMocking(
 }
 
 enum class ParametrizedTestSource(
+    override val id: String,
     override val displayName: String,
     override val description: String = "Use $displayName for parametrized tests"
 ) : CodeGenerationSettingItem {
     DO_NOT_PARAMETRIZE(
+        id = "Not parametrized",
         displayName = "Not parametrized",
         description = "Do not generate parametrized tests"
     ),
     PARAMETRIZE(
+        id = "Parametrized",
         displayName = "Parametrized",
         description = "Generate parametrized tests"
     );
 
-    override fun toString(): String = displayName
+    override fun toString(): String = id
 
     // Get is mandatory because of the initialization order of the inheritors.
     // Otherwise, in some cases we could get an incorrect value

utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/settings/SettingsWindow.kt

@@ -25,6 +25,7 @@ import org.utbot.framework.plugin.api.CodeGenerationSettingItem
 import org.utbot.framework.plugin.api.CodegenLanguage
 import org.utbot.framework.plugin.api.JavaDocCommentStyle
 import org.utbot.framework.plugin.api.TreatOverflowAsError
+import org.utbot.intellij.plugin.ui.components.CodeGenerationSettingItemRenderer
 
 class SettingsWindow(val project: Project) {
     private val settings = project.service<Settings>()
@@ -37,7 +38,7 @@ class SettingsWindow(val project: Project) {
         val valuesComboBox: LayoutBuilder.(KClass<*>, Array<*>) -> Unit = { loader, values ->
             val serviceLabels = mapOf(
                 CodegenLanguage::class to "Generated test language:",
-                RuntimeExceptionTestsBehaviour::class to "Test with exceptions:",
+                RuntimeExceptionTestsBehaviour::class to "Tests with exceptions:",
                 TreatOverflowAsError::class to "Overflow detection:",
                 JavaDocCommentStyle::class to "Javadoc comment style:"
             )
@@ -51,7 +52,10 @@ class SettingsWindow(val project: Project) {
                         DefaultComboBoxModel(values),
                         getter = { settings.providerNameByServiceLoader(loader) },
                         setter = { settings.setProviderByLoader(loader, it as CodeGenerationSettingItem) },
-                    ).apply { ContextHelpLabel.create(tooltipLabels[loader] ?: return@apply)() }
+                    ).apply {
+                        component.renderer = CodeGenerationSettingItemRenderer()
+                        ContextHelpLabel.create(tooltipLabels[loader] ?: return@apply)()
+                    }
                 }
             }
         }

utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/ui/GenerateTestsDialogWindow.kt

@@ -124,6 +124,7 @@ import org.utbot.intellij.plugin.models.mockitoCoreLibraryDescriptor
 import org.utbot.intellij.plugin.models.packageName
 import org.utbot.intellij.plugin.models.testNgLibraryDescriptor
 import org.utbot.intellij.plugin.settings.Settings
+import org.utbot.intellij.plugin.ui.components.CodeGenerationSettingItemRenderer
 import org.utbot.intellij.plugin.ui.components.TestFolderComboWithBrowseButton
 import org.utbot.intellij.plugin.ui.utils.LibrarySearchScope
 import org.utbot.intellij.plugin.ui.utils.addSourceRootIfAbsent
@@ -168,9 +169,9 @@ class GenerateTestsDialogWindow(val model: GenerateTestsModel) : DialogWrapper(m
 
     private val testSourceFolderField = TestFolderComboWithBrowseButton(model)
 
-    private val codegenLanguages = ComboBox(DefaultComboBoxModel(CodegenLanguage.values()))
-    private val testFrameworks = ComboBox(DefaultComboBoxModel(TestFramework.allItems.toTypedArray()))
-    private val mockStrategies = ComboBox(DefaultComboBoxModel(MockStrategyApi.values()))
+    private val codegenLanguages = createComboBox(CodegenLanguage.values())
+    private val testFrameworks = createComboBox(TestFramework.allItems.toTypedArray())
+    private val mockStrategies = createComboBox(MockStrategyApi.values())
     private val staticsMocking = JCheckBox("Mock static methods")
     private val timeoutSpinner =
         JBIntSpinner(
@@ -191,6 +192,12 @@ class GenerateTestsDialogWindow(val model: GenerateTestsModel) : DialogWrapper(m
         parametrizedTestSources to null
     )
 
+    private fun <T : CodeGenerationSettingItem> createComboBox(values: Array<T>) : ComboBox<T> {
+        return ComboBox<T>(DefaultComboBoxModel(values)).also {
+            it.renderer = CodeGenerationSettingItemRenderer()
+        }
+    }
+
     private fun createHelpLabel(commonTooltip: String? = null) = JBLabel(AllIcons.General.ContextHelp).apply {
         if (!commonTooltip.isNullOrEmpty()) toolTipText = commonTooltip
     }
@@ -239,22 +246,16 @@ class GenerateTestsDialogWindow(val model: GenerateTestsModel) : DialogWrapper(m
             row("Test source root:") {
                 component(testSourceFolderField)
             }
-            row("Code generation language:") {
-                makePanelWithHelpTooltip(
-                    codegenLanguages as ComboBox<CodeGenerationSettingItem>,
-                    itemsToHelpTooltip[codegenLanguages]
-                )
-            }.visible = false
             row("Testing framework:") {
                 makePanelWithHelpTooltip(
-                    testFrameworks as ComboBox<CodeGenerationSettingItem>,
+                    testFrameworks,
                     null
                 )
             }
             row { component(parametrizedTestSources) }
             row("Mock strategy:") {
                 makePanelWithHelpTooltip(
-                    mockStrategies as ComboBox<CodeGenerationSettingItem>,
+                    mockStrategies,
                     ContextHelpLabel.create("Mock everything around the target class or the whole package except the system classes. Otherwise mock nothing.")
                 )
             }
@@ -957,11 +958,11 @@ class GenerateTestsDialogWindow(val model: GenerateTestsModel) : DialogWrapper(m
         testFrameworks.item = if (currentFrameworkItem in enabledTestFrameworks) currentFrameworkItem else defaultItem
         testFrameworks.renderer = object : ColoredListCellRenderer<TestFramework>() {
             override fun customizeCellRenderer(
-                list: JList<out TestFramework>, value: TestFramework?,
+                list: JList<out TestFramework>, value: TestFramework,
                 index: Int, selected: Boolean, hasFocus: Boolean
             ) {
-                this.append(value.toString(), SimpleTextAttributes.REGULAR_ATTRIBUTES)
-                if (value == null || !value.isInstalled) {
+                this.append(value.displayName, SimpleTextAttributes.REGULAR_ATTRIBUTES)
+                if (!value.isInstalled) {
                     this.append(WILL_BE_INSTALLED_LABEL, SimpleTextAttributes.ERROR_ATTRIBUTES)
                 }
             }
@@ -982,10 +983,10 @@ class GenerateTestsDialogWindow(val model: GenerateTestsModel) : DialogWrapper(m
     private fun updateMockStrategyList() {
         mockStrategies.renderer = object : ColoredListCellRenderer<MockStrategyApi>() {
             override fun customizeCellRenderer(
-                list: JList<out MockStrategyApi>, value: MockStrategyApi?,
+                list: JList<out MockStrategyApi>, value: MockStrategyApi,
                 index: Int, selected: Boolean, hasFocus: Boolean
             ) {
-                this.append(value.toString(), SimpleTextAttributes.REGULAR_ATTRIBUTES)
+                this.append(value.displayName, SimpleTextAttributes.REGULAR_ATTRIBUTES)
                 if (value != MockStrategyApi.NO_MOCKS && !MOCKITO.isInstalled) {
                     this.append(WILL_BE_INSTALLED_LABEL, SimpleTextAttributes.ERROR_ATTRIBUTES)
                 }

utbot-intellij/src/main/kotlin/org/utbot/intellij/plugin/ui/components/CodeGenerationSettingItemRenderer.kt

@@ -0,0 +1,22 @@
+package org.utbot.intellij.plugin.ui.components
+
+import java.awt.Component
+import javax.swing.DefaultListCellRenderer
+import javax.swing.JList
+import org.utbot.framework.plugin.api.CodeGenerationSettingItem
+
+internal class CodeGenerationSettingItemRenderer : DefaultListCellRenderer() {
+    override fun getListCellRendererComponent(
+        list: JList<*>?,
+        value: Any?,
+        index: Int,
+        isSelected: Boolean,
+        cellHasFocus: Boolean
+    ): Component {
+        return super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus).apply {
+            if (value is CodeGenerationSettingItem) {
+                text = value.displayName
+            }
+        }
+    }
+}