[FE] Report ambiguity in all possible cases

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroup.fir.kt

@@ -0,0 +1,22 @@
+interface Common {
+    fun supertypeMember() {}
+}
+interface C1 : Common {
+    fun member() {}
+}
+interface C2 : Common {
+    fun member() {}
+}
+
+fun Common.supertypeExtension() {}
+
+context(Common)
+fun supertypeContextual() {}
+
+context(C1, C2)
+fun test() {
+    supertypeMember()
+    member()
+    supertypeExtension()
+    supertypeContextual()
+}

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroup.kt

@@ -0,0 +1,22 @@
+interface Common {
+    fun supertypeMember() {}
+}
+interface C1 : Common {
+    fun member() {}
+}
+interface C2 : Common {
+    fun member() {}
+}
+
+fun Common.supertypeExtension() {}
+
+context(Common)
+fun supertypeContextual() {}
+
+context(C1, C2)
+fun test() {
+    <!OVERLOAD_RESOLUTION_AMBIGUITY!>supertypeMember<!>()
+    <!OVERLOAD_RESOLUTION_AMBIGUITY!>member<!>()
+    <!AMBIBIGUOS_CALL_WITH_IMPLICIT_CONTEXT_RECEIVER!>supertypeExtension()<!>
+    <!MULTIPLE_ARGUMENTS_APPLICABLE_FOR_CONTEXT_RECEIVER!>supertypeContextual()<!>
+}

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroup.txt

@@ -1,23 +1,28 @@
 package
 
-public fun foo(): kotlin.Unit
+public fun supertypeContextual(): kotlin.Unit
 public fun test(): kotlin.Unit
-public fun Common.bar(): kotlin.Unit
+public fun Common.supertypeExtension(): kotlin.Unit
 
 public interface C1 : Common {
     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 fun member(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun supertypeMember(): kotlin.Unit
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
 
 public interface C2 : Common {
     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 fun member(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun supertypeMember(): kotlin.Unit
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }
 
 public interface Common {
     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 fun supertypeMember(): kotlin.Unit
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroupSimple.fir.kt

@@ -1,11 +0,0 @@
-interface C1 {
-    fun foo() {}
-}
-interface C2 {
-    fun foo() {}
-}
-
-context(C1, C2)
-fun bar() {
-    foo()
-}

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroupSimple.kt

@@ -1,11 +0,0 @@
-interface C1 {
-    fun foo() {}
-}
-interface C2 {
-    fun foo() {}
-}
-
-context(C1, C2)
-fun bar() {
-    <!OVERLOAD_RESOLUTION_AMBIGUITY!>foo<!>()
-}

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroupSimple.txt

@@ -1,17 +0,0 @@
-package
-
-public fun bar(): kotlin.Unit
-
-public interface C1 {
-    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public open fun foo(): kotlin.Unit
-    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
-}
-
-public interface C2 {
-    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
-    public open fun foo(): kotlin.Unit
-    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
-    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
-}

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroupWithInheritance.fir.kt

@@ -1,14 +0,0 @@
-interface Common
-interface C1 : Common
-interface C2 : Common
-
-context(Common)
-fun foo() {}
-
-fun Common.bar() {}
-
-context(C1, C2)
-fun test() {
-    foo()
-    bar()
-}

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroupWithInheritance.kt

@@ -1,14 +0,0 @@
-interface Common
-interface C1 : Common
-interface C2 : Common
-
-context(Common)
-fun foo() {}
-
-fun Common.bar() {}
-
-context(C1, C2)
-fun test() {
-    <!MULTIPLE_ARGUMENTS_APPLICABLE_FOR_CONTEXT_RECEIVER!>foo()<!>
-    bar()
-}