Test equals/hashCode/toString for function references

compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/functionEqualsHashCode.kt

@@ -0,0 +1,31 @@
+import kotlin.test.*
+
+fun top() = 42
+
+fun Int.intExt(): Int = this
+
+class A {
+    fun mem() {}
+}
+
+class B {
+    fun mem() {}
+}
+
+
+fun checkEqual(x: Any, y: Any) {
+    assertEquals(x, y)
+    assertEquals(x.hashCode(), y.hashCode(), "Elements are equal but their hash codes are not: ${x.hashCode()} != ${y.hashCode()}")
+}
+
+fun box(): String {
+    checkEqual(::top, ::top)
+    checkEqual(Int::intExt, Int::intExt)
+    checkEqual(A::mem, A::mem)
+
+    assertFalse(::top == Int::intExt)
+    assertFalse(::top == A::mem)
+    assertFalse(A::mem == B::mem)
+
+    return "OK"
+}

compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/functionToString.kt

@@ -0,0 +1,24 @@
+package test
+
+import kotlin.test.assertEquals
+
+fun top() = 42
+
+fun String.ext(): Int = 0
+fun IntRange?.ext2(): Array<Int?> = arrayOfNulls(0)
+
+class A {
+    fun mem(): String = ""
+}
+
+fun assertToString(s: String, x: Any) {
+    assertEquals(s, x.toString())
+}
+
+fun box(): String {
+    assertToString("fun top(): kotlin.Int", ::top)
+    assertToString("fun kotlin.String.ext(): kotlin.Int", String::ext)
+    assertToString("fun kotlin.IntRange?.ext2(): kotlin.Array<kotlin.Int?>", IntRange::ext2)
+    assertToString("fun test.A.mem(): kotlin.String", A::mem)
+    return "OK"
+}

compiler/tests/org/jetbrains/kotlin/codegen/generated/BlackBoxWithStdlibCodegenTestGenerated.java

@@ -3123,18 +3123,24 @@ public class BlackBoxWithStdlibCodegenTestGenerated extends AbstractBlackBoxCode
                 doTestWithStdlib(fileName);
             }
 
-            @TestMetadata("equalsHashCode.kt")
-            public void testEqualsHashCode() throws Exception {
-                String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/equalsHashCode.kt");
-                doTestWithStdlib(fileName);
-            }
-
             @TestMetadata("extensionPropertyReceiverToString.kt")
             public void testExtensionPropertyReceiverToString() throws Exception {
                 String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/extensionPropertyReceiverToString.kt");
                 doTestWithStdlib(fileName);
             }
 
+            @TestMetadata("functionEqualsHashCode.kt")
+            public void testFunctionEqualsHashCode() throws Exception {
+                String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/functionEqualsHashCode.kt");
+                doTestWithStdlib(fileName);
+            }
+
+            @TestMetadata("functionToString.kt")
+            public void testFunctionToString() throws Exception {
+                String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/functionToString.kt");
+                doTestWithStdlib(fileName);
+            }
+
             @TestMetadata("memberExtensionToString.kt")
             public void testMemberExtensionToString() throws Exception {
                 String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/memberExtensionToString.kt");
@@ -3153,6 +3159,12 @@ public class BlackBoxWithStdlibCodegenTestGenerated extends AbstractBlackBoxCode
                 doTestWithStdlib(fileName);
             }
 
+            @TestMetadata("propertyEqualsHashCode.kt")
+            public void testPropertyEqualsHashCode() throws Exception {
+                String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/propertyEqualsHashCode.kt");
+                doTestWithStdlib(fileName);
+            }
+
             @TestMetadata("propertyToString.kt")
             public void testPropertyToString() throws Exception {
                 String fileName = JetTestUtils.navigationMetadata("compiler/testData/codegen/boxWithStdlib/reflection/methodsFromAny/propertyToString.kt");

core/reflection.jvm/src/kotlin/reflect/jvm/internal/ReflectionObjectRenderer.kt

@@ -55,7 +55,6 @@ object ReflectionObjectRenderer {
     }
 
     fun renderFunction(descriptor: FunctionDescriptor): String {
-        // TODO: add tests
         return StringBuilder {
             append("fun ")
             appendReceiversAndName(descriptor)