Enable feature: add test for JPS case

idea/testData/quickfix/changeFeatureSupport/inlineClass.kt

@@ -0,0 +1,4 @@
+// "Enable inline classes support in the project" "true"
+// Here we just check that quick-fix disappears after application
+
+<caret>inline class My(val x: String)

idea/testData/quickfix/changeFeatureSupport/inlineClass.kt.after

@@ -0,0 +1,4 @@
+// "Enable inline classes support in the project" "true"
+// Here we just check that quick-fix disappears after application
+
+inline class My(val x: String)

idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixMultiFileTestGenerated.java

@@ -1027,6 +1027,19 @@ public class QuickFixMultiFileTestGenerated extends AbstractQuickFixMultiFileTes
         }
     }
 
+    @TestMetadata("idea/testData/quickfix/changeFeatureSupport")
+    @TestDataPath("$PROJECT_ROOT")
+    @RunWith(JUnit3RunnerWithInners.class)
+    public static class ChangeFeatureSupport extends AbstractQuickFixMultiFileTest {
+        private void runTest(String testDataFilePath) throws Exception {
+            KotlinTestUtils.runTest(this::doTestWithExtraFile, TargetBackend.ANY, testDataFilePath);
+        }
+
+        public void testAllFilesPresentInChangeFeatureSupport() throws Exception {
+            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/quickfix/changeFeatureSupport"), Pattern.compile("^(\\w+)\\.((before\\.Main\\.\\w+)|(test))$"), TargetBackend.ANY, true);
+        }
+    }
+
     @TestMetadata("idea/testData/quickfix/changeSignature")
     @TestDataPath("$PROJECT_ROOT")
     @RunWith(JUnit3RunnerWithInners.class)

idea/tests/org/jetbrains/kotlin/idea/quickfix/QuickFixTestGenerated.java

@@ -1542,6 +1542,24 @@ public class QuickFixTestGenerated extends AbstractQuickFixTest {
         }
     }
 
+    @TestMetadata("idea/testData/quickfix/changeFeatureSupport")
+    @TestDataPath("$PROJECT_ROOT")
+    @RunWith(JUnit3RunnerWithInners.class)
+    public static class ChangeFeatureSupport extends AbstractQuickFixTest {
+        private void runTest(String testDataFilePath) throws Exception {
+            KotlinTestUtils.runTest(this::doTest, TargetBackend.ANY, testDataFilePath);
+        }
+
+        public void testAllFilesPresentInChangeFeatureSupport() throws Exception {
+            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/quickfix/changeFeatureSupport"), Pattern.compile("^([\\w\\-_]+)\\.kt$"), TargetBackend.ANY, true);
+        }
+
+        @TestMetadata("inlineClass.kt")
+        public void testInlineClass() throws Exception {
+            runTest("idea/testData/quickfix/changeFeatureSupport/inlineClass.kt");
+        }
+    }
+
     @TestMetadata("idea/testData/quickfix/changeSignature")
     @TestDataPath("$PROJECT_ROOT")
     @RunWith(JUnit3RunnerWithInners.class)

idea/tests/org/jetbrains/kotlin/idea/quickfix/UpdateConfigurationQuickFixTest.kt

@@ -40,6 +40,16 @@ import org.jetbrains.kotlin.idea.versions.bundledRuntimeVersion
 import java.io.File
 
 class UpdateConfigurationQuickFixTest : LightPlatformCodeInsightFixtureTestCase() {
+    fun testDisableInlineClasses() {
+        configureRuntime("mockRuntime11")
+        resetProjectSettings(LanguageVersion.KOTLIN_1_3)
+        myFixture.configureByText("foo.kt", "inline class My(val n: Int)")
+
+        assertEquals(LanguageFeature.State.ENABLED_WITH_WARNING, inlineClassesSupport)
+        myFixture.launchAction(myFixture.findSingleIntention("Disable inline classes support in the project"))
+        assertEquals(LanguageFeature.State.DISABLED, inlineClassesSupport)
+    }
+
     fun testEnableCoroutines() {
         configureRuntime("mockRuntime11")
         resetProjectSettings(LanguageVersion.KOTLIN_1_1)
@@ -192,6 +202,9 @@ class UpdateConfigurationQuickFixTest : LightPlatformCodeInsightFixtureTestCase(
     private val coroutineSupport: LanguageFeature.State
         get() = project.getLanguageVersionSettings().getFeatureSupport(LanguageFeature.Coroutines)
 
+    private val inlineClassesSupport: LanguageFeature.State
+        get() = project.getLanguageVersionSettings().getFeatureSupport(LanguageFeature.InlineClasses)
+
     override fun tearDown() {
         FacetManager.getInstance(myModule).getFacetByType(KotlinFacetType.TYPE_ID)?.let {
             FacetUtil.deleteFacet(it)