Add test on experimental const val in annotation argument

This test checks that a usage inside an annotation argument is a
signature usage, which may be too restricting but easier to support at
the moment (and the restriction can be lifted in the future)

compiler/testData/diagnostics/testsWithStdLib/experimental/constVal.kt

@@ -0,0 +1,46 @@
+// !API_VERSION: 1.3
+// MODULE: api
+// FILE: api.kt
+
+package api
+
+@Experimental(Experimental.Level.WARNING, [Experimental.Impact.COMPILATION])
+@Target(AnnotationTarget.PROPERTY, AnnotationTarget.FUNCTION)
+annotation class ExperimentalAPI
+
+@ExperimentalAPI
+const val MEANING = 42
+
+annotation class Anno(val value: Int)
+
+// MODULE: usage1(api)
+// FILE: usage-propagate.kt
+
+package usage1
+
+import api.*
+
+@ExperimentalAPI
+@Anno(MEANING)
+fun usage() {}
+
+// MODULE: usage2(api)
+// FILE: usage-use.kt
+
+@file:UseExperimental(ExperimentalAPI::class)
+package usage2
+
+import api.*
+
+@Anno(<!EXPERIMENTAL_API_USAGE!>MEANING<!>)
+fun usage() {}
+
+// MODULE: usage3(api)
+// FILE: usage-none.kt
+
+package usage3
+
+import api.*
+
+@Anno(<!EXPERIMENTAL_API_USAGE!>MEANING<!>)
+fun usage() {}

compiler/testData/diagnostics/testsWithStdLib/experimental/constVal.txt

@@ -0,0 +1,54 @@
+// -- Module: <api> --
+package
+
+package api {
+    @api.ExperimentalAPI public const val MEANING: kotlin.Int = 42
+
+    public final annotation class Anno : kotlin.Annotation {
+        public constructor Anno(/*0*/ value: kotlin.Int)
+        public final val value: kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    @kotlin.Experimental(changesMayBreak = {Impact.COMPILATION}, level = Level.WARNING) @kotlin.annotation.Target(allowedTargets = {AnnotationTarget.PROPERTY, AnnotationTarget.FUNCTION}) public final annotation class ExperimentalAPI : kotlin.Annotation {
+        public constructor ExperimentalAPI()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+
+// -- Module: <usage1> --
+package
+
+package api {
+}
+
+package usage1 {
+    @api.ExperimentalAPI @api.Anno(value = 42) public fun usage(): kotlin.Unit
+}
+
+
+// -- Module: <usage2> --
+package
+
+package api {
+}
+
+package usage2 {
+    @api.Anno(value = 42) public fun usage(): kotlin.Unit
+}
+
+
+// -- Module: <usage3> --
+package
+
+package api {
+}
+
+package usage3 {
+    @api.Anno(value = 42) public fun usage(): kotlin.Unit
+}

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestWithStdLibGenerated.java

@@ -1839,6 +1839,12 @@ public class DiagnosticsTestWithStdLibGenerated extends AbstractDiagnosticsTestW
             doTest(fileName);
         }
 
+        @TestMetadata("constVal.kt")
+        public void testConstVal() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/testsWithStdLib/experimental/constVal.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("deeplyNestedClass.kt")
         public void testDeeplyNestedClass() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/testsWithStdLib/experimental/deeplyNestedClass.kt");

compiler/tests/org/jetbrains/kotlin/checkers/javac/DiagnosticsTestWithStdLibUsingJavacGenerated.java

@@ -1839,6 +1839,12 @@ public class DiagnosticsTestWithStdLibUsingJavacGenerated extends AbstractDiagno
             doTest(fileName);
         }
 
+        @TestMetadata("constVal.kt")
+        public void testConstVal() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/testsWithStdLib/experimental/constVal.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("deeplyNestedClass.kt")
         public void testDeeplyNestedClass() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/testsWithStdLib/experimental/deeplyNestedClass.kt");