Add test for obsolete issue about SAMs

#KT-11951 Obsolete

compiler/testData/diagnostics/tests/j+k/sam/fakeOverrideFunctionForStaticSam.kt

@@ -0,0 +1,20 @@
+// FILE: BehaviorSubject.java
+public class BehaviorSubject<T> extends Observable<T> {
+}
+
+// FILE: Observable.java
+
+public class Observable<T> {
+    public static <T> Observable<T> create(Observable.OnSubscribe<T> f) {
+        return null;
+    }
+    public interface OnSubscribe<T> {
+        void call(T t);
+    }
+}
+
+// FILE: 1.kt
+fun main(args: Array<String>) {
+    BehaviorSubject.create<String>(null)
+    BehaviorSubject.create<Int> { }
+}

compiler/testData/diagnostics/tests/j+k/sam/fakeOverrideFunctionForStaticSam.txt

@@ -0,0 +1,30 @@
+package
+
+public fun main(/*0*/ args: kotlin.Array<kotlin.String>): kotlin.Unit
+
+public open class BehaviorSubject</*0*/ T : kotlin.Any!> : Observable<T!> {
+    public constructor BehaviorSubject</*0*/ T : kotlin.Any!>()
+    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
+
+    // Static members
+    public open override /*1*/ /*fake_override*/ fun </*0*/ T : kotlin.Any!> create(/*0*/ f: Observable.OnSubscribe<T!>!): Observable<T!>!
+}
+
+public open class Observable</*0*/ T : kotlin.Any!> {
+    public constructor Observable</*0*/ T : kotlin.Any!>()
+    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
+
+    public interface OnSubscribe</*0*/ T : kotlin.Any!> {
+        public abstract fun call(/*0*/ t: T!): kotlin.Unit
+        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
+    }
+
+    // Static members
+    public open fun </*0*/ T : kotlin.Any!> create(/*0*/ f: Observable.OnSubscribe<T!>!): Observable<T!>!
+}

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

@@ -12621,6 +12621,12 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                     doTest(fileName);
                 }
 
+                @TestMetadata("fakeOverrideFunctionForStaticSam.kt")
+                public void testFakeOverrideFunctionForStaticSam() throws Exception {
+                    String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/j+k/sam/fakeOverrideFunctionForStaticSam.kt");
+                    doTest(fileName);
+                }
+
                 @TestMetadata("inheritedStaticSam.kt")
                 public void testInheritedStaticSam() throws Exception {
                     String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/j+k/sam/inheritedStaticSam.kt");