[tests] generic vararg decompilation test case (IDEA-204272)

test/org/jetbrains/java/decompiler/SingleClassesTest.java

@@ -126,6 +126,7 @@ public class SingleClassesTest {
   @Test public void testPrivateClasses() { doTest("pkg/PrivateClasses"); }
   @Test public void testSuspendLambda() { doTest("pkg/TestSuspendLambdaKt"); }
   @Test public void testNamedSuspendFun2Kt() { doTest("pkg/TestNamedSuspendFun2Kt"); }
+  @Test public void testGenericArgs() { doTest("pkg/TestGenericArgs"); }
 
   private void doTest(String testFile, String... companionFiles) {
     ConsoleDecompiler decompiler = fixture.getDecompiler();

testData/results/TestGenericArgs.dec

@@ -0,0 +1,55 @@
+package pkg;
+
+public class TestGenericArgs {
+   private static <T> void genericSingle(Class<T> var0) {
+   }// 4
+
+   private static <T> void genericVarArgs(Class<T>... var0) {
+   }// 6
+
+   private static <T> void genericArray(Class<T>[] var0) {
+   }// 8
+
+   private static <T> void single(Class var0) {
+   }// 10
+
+   private static <T> void varArgs(Class... var0) {
+   }// 12
+
+   private static <T> void array(Class[] var0) {
+   }// 14
+}
+
+class 'pkg/TestGenericArgs' {
+   method 'genericSingle (Ljava/lang/Class;)V' {
+      0      4
+   }
+
+   method 'genericVarArgs ([Ljava/lang/Class;)V' {
+      0      7
+   }
+
+   method 'genericArray ([Ljava/lang/Class;)V' {
+      0      10
+   }
+
+   method 'single (Ljava/lang/Class;)V' {
+      0      13
+   }
+
+   method 'varArgs ([Ljava/lang/Class;)V' {
+      0      16
+   }
+
+   method 'array ([Ljava/lang/Class;)V' {
+      0      19
+   }
+}
+
+Lines mapping:
+4 <-> 5
+6 <-> 8
+8 <-> 11
+10 <-> 14
+12 <-> 17
+14 <-> 20

testData/src/pkg/TestGenericArgs.java

@@ -0,0 +1,15 @@
+package pkg;
+
+public class TestGenericArgs {
+  private static <T> void genericSingle(Class<T> param) { }
+
+  private static <T> void genericVarArgs(Class<T>... param) { }
+
+  private static <T> void genericArray(Class<T>[] param) { }
+
+  private static <T> void single(Class param) { }
+
+  private static <T> void varArgs(Class... param) { }
+
+  private static <T> void array(Class[] param) { }
+}