[TEST] Migrate duplicating javac tests to new test runners

Also minimize scope of DiagnosticUsingJavac tests to
 `compiler/testData/diagnostics/tests/javac`. This is fine since
 javac compilation mode is still not finished and no one not going to
 support it

compiler/testData/diagnostics/tests/javac/imports/AllUnderImportsAmbiguity.fir.kt

@@ -0,0 +1,27 @@
+// FILE: a/x.java
+package a;
+
+public class x {}
+
+// FILE: b/x.java
+package b;
+
+public class x {}
+
+// FILE: c/d.java
+package c;
+
+import a.*;
+import b.*;
+
+public class d {
+    public x x() { return null; }
+} 
+
+// FILE: c/c.kt
+package c
+
+import a.*
+import b.*
+
+fun test(): x = d().x()

compiler/testData/diagnostics/tests/javac/imports/AllUnderImportsAmbiguity.kt

@@ -0,0 +1,27 @@
+// FILE: a/x.java
+package a;
+
+public class x {}
+
+// FILE: b/x.java
+package b;
+
+public class x {}
+
+// FILE: c/d.java
+package c;
+
+import a.*;
+import b.*;
+
+public class d {
+    public x x() { return null; }
+} 
+
+// FILE: c/c.kt
+package c
+
+import a.*
+import b.*
+
+fun test(): <!UNRESOLVED_REFERENCE!>x<!> = d().<!MISSING_DEPENDENCY_CLASS!>x<!>()

compiler/testData/diagnostics/tests/javac/imports/AllUnderImportsAmbiguity.txt

@@ -0,0 +1,33 @@
+package
+
+package a {
+
+    public open class x {
+        public constructor x()
+        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
+    }
+}
+
+package b {
+
+    public open class x {
+        public constructor x()
+        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
+    }
+}
+
+package c {
+    public fun test(): [ERROR : x]
+
+    public open class d {
+        public constructor d()
+        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 open fun x(): x!
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/AllUnderImportsLessPriority.kt

@@ -0,0 +1,27 @@
+// FIR_IDENTICAL
+// FILE: a/X.java
+package a;
+
+public class X {}
+
+// FILE: b/X.java
+package b;
+
+public class X {}
+
+// FILE: c/Test.java
+package c;
+
+import a.X;
+import b.*;
+
+public class Test {
+
+    public X test() { return null; };
+
+}
+
+// FILE: c.kt
+package c
+
+fun test() = Test().test()

compiler/testData/diagnostics/tests/javac/imports/AllUnderImportsLessPriority.txt

@@ -0,0 +1,33 @@
+package
+
+package a {
+
+    public open class X {
+        public constructor X()
+        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
+    }
+}
+
+package b {
+
+    public open class X {
+        public constructor X()
+        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
+    }
+}
+
+package c {
+    public fun test(): a.X!
+
+    public open class Test {
+        public constructor Test()
+        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 test(): a.X!
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/ClassImportsConflicting.kt

@@ -0,0 +1,32 @@
+// FIR_IDENTICAL
+// SKIP_JAVAC
+// FILE: b.kt
+package b
+
+object O {}
+
+// FILE: c.kt
+package c
+
+object O {}
+
+// FILE: a/a.java
+package a;
+
+import b.O;
+import c.O;
+
+public abstract class a {
+
+    public O getO() { return null; }
+
+}
+
+// FILE: a.kt
+package d
+
+import a.a
+
+class A : a()
+
+fun test() = A().getO()

compiler/testData/diagnostics/tests/javac/imports/ClassImportsConflicting.txt

@@ -0,0 +1,44 @@
+package
+
+package a {
+
+    public abstract class a {
+        public constructor a()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getO(): b.O!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+package b {
+
+    public object O {
+        private constructor O()
+        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
+    }
+}
+
+package c {
+
+    public object O {
+        private constructor O()
+        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
+    }
+}
+
+package d {
+    public fun test(): b.O!
+
+    public final class A : a.a {
+        public constructor A()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun getO(): b.O!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/CurrentPackageAndAllUnderImport.kt

@@ -0,0 +1,26 @@
+// FIR_IDENTICAL
+// FILE: a/X.java
+package a;
+
+public class X {}
+
+// FILE: b/X.java
+package b;
+
+public class X {}
+
+// FILE: b/A.java
+package b;
+
+import a.*;
+
+public class A {
+
+    public X getX() { return null; }
+
+}
+
+// FILE: b.kt
+package b
+
+fun test() = A().getX()

compiler/testData/diagnostics/tests/javac/imports/CurrentPackageAndAllUnderImport.txt

@@ -0,0 +1,30 @@
+package
+
+package a {
+
+    public open class X {
+        public constructor X()
+        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
+    }
+}
+
+package b {
+    public fun test(): b.X!
+
+    public open class A {
+        public constructor A()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getX(): b.X!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public open class X {
+        public constructor X()
+        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
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/CurrentPackageAndExplicitImport.kt

@@ -0,0 +1,28 @@
+// FIR_IDENTICAL
+// FILE: a/Y.java
+package a;
+
+public class Y {
+    public void test() {}
+}
+
+// FILE: b/Y.java
+package b;
+
+public class Y {}
+
+// FILE: b/T.java
+package b;
+
+import a.Y;
+
+public class T {
+
+    public Y getY() { return null; }
+
+}
+
+// FILE: b/b.kt
+package b
+
+fun test() = T().getY().test()

compiler/testData/diagnostics/tests/javac/imports/CurrentPackageAndExplicitImport.txt

@@ -0,0 +1,31 @@
+package
+
+package a {
+
+    public open class Y {
+        public constructor Y()
+        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 test(): kotlin.Unit
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+package b {
+    public fun test(): kotlin.Unit
+
+    public open class T {
+        public constructor T()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getY(): a.Y!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public open class Y {
+        public constructor Y()
+        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
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/CurrentPackageAndExplicitNestedImport.kt

@@ -0,0 +1,31 @@
+// FIR_IDENTICAL
+// FILE: a/X.java
+package a;
+
+public class X {
+    public void test() {}
+
+    public static class Y {}
+
+}
+
+// FILE: b/Y.java
+package b;
+
+public class Y {}
+
+// FILE: b/T.java
+package b;
+
+import a.X.Y;
+
+public class T {
+
+    public Y getY() { return null; }
+
+}
+
+// FILE: b/b.kt
+package b
+
+fun test() = T().getY()

compiler/testData/diagnostics/tests/javac/imports/CurrentPackageAndExplicitNestedImport.txt

@@ -0,0 +1,38 @@
+package
+
+package a {
+
+    public open class X {
+        public constructor X()
+        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 test(): kotlin.Unit
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+        public open class Y {
+            public constructor Y()
+            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
+        }
+    }
+}
+
+package b {
+    public fun test(): a.X.Y!
+
+    public open class T {
+        public constructor T()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getY(): a.X.Y!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public open class Y {
+        public constructor Y()
+        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
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/CurrentPackageAndNestedAsteriskImport.kt

@@ -0,0 +1,31 @@
+// FIR_IDENTICAL
+// FILE: a/X.java
+package a;
+
+public class X {
+    public void test() {}
+
+    public static class Y {}
+
+}
+
+// FILE: b/Y.java
+package b;
+
+public class Y {}
+
+// FILE: b/T.java
+package b;
+
+import a.X.*;
+
+public class T {
+
+    public Y getY() { return null; }
+
+}
+
+// FILE: b/b.kt
+package b
+
+fun test() = T().getY()

compiler/testData/diagnostics/tests/javac/imports/CurrentPackageAndNestedAsteriskImport.txt

@@ -0,0 +1,38 @@
+package
+
+package a {
+
+    public open class X {
+        public constructor X()
+        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 test(): kotlin.Unit
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+        public open class Y {
+            public constructor Y()
+            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
+        }
+    }
+}
+
+package b {
+    public fun test(): b.Y!
+
+    public open class T {
+        public constructor T()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getY(): b.Y!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public open class Y {
+        public constructor Y()
+        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
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/ImportGenericVsPackage.kt

@@ -0,0 +1,26 @@
+// FIR_IDENTICAL
+// FILE: a/x.java
+package a;
+
+public class x<T> {}
+
+// FILE: b/x.java
+package b;
+
+public class x {}
+
+// FILE: b/test.java
+package b;
+
+import a.x;
+
+public class test {
+
+    public x<?> getX() { return null; }
+
+}
+
+// FILE: b/test.kt
+package b
+
+fun test1() = test().getX()

compiler/testData/diagnostics/tests/javac/imports/ImportGenericVsPackage.txt

@@ -0,0 +1,30 @@
+package
+
+package a {
+
+    public open class x</*0*/ T : kotlin.Any!> {
+        public constructor x</*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
+    }
+}
+
+package b {
+    public fun test1(): a.x<*>!
+
+    public open class test {
+        public constructor test()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getX(): a.x<*>!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public open class x {
+        public constructor x()
+        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
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/ImportProtectedClass.fir.kt

@@ -0,0 +1,19 @@
+// FILE: p/Foo.java
+package p;
+
+public class Foo {
+   protected static class Nested {} 
+}
+
+// FILE: foo.kt
+package a
+
+import p.Foo
+import p.Foo.Nested
+
+class Bar : Foo() {
+    protected fun foo(): Nested? = null
+}
+
+private fun foo(): Nested? = null
+private fun bar(): p.Foo.Nested? = null

compiler/testData/diagnostics/tests/javac/imports/ImportProtectedClass.kt

@@ -0,0 +1,19 @@
+// FILE: p/Foo.java
+package p;
+
+public class Foo {
+   protected static class Nested {} 
+}
+
+// FILE: foo.kt
+package a
+
+import p.Foo
+import p.Foo.Nested
+
+class Bar : Foo() {
+    protected fun foo(): Nested? = null
+}
+
+private fun foo(): <!INVISIBLE_REFERENCE!>Nested<!>? = null
+private fun bar(): p.Foo.<!INVISIBLE_REFERENCE!>Nested<!>? = null

compiler/testData/diagnostics/tests/javac/imports/ImportProtectedClass.txt

@@ -0,0 +1,31 @@
+package
+
+package a {
+    private fun bar(): p.Foo.Nested?
+    private fun foo(): p.Foo.Nested?
+
+    public final class Bar : p.Foo {
+        public constructor Bar()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        protected final fun foo(): p.Foo.Nested?
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+package p {
+
+    public open class Foo {
+        public constructor Foo()
+        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
+
+        protected/*protected static*/ open class Nested {
+            protected/*protected and package*/ constructor Nested()
+            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
+        }
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/ImportTwoTimes.kt

@@ -0,0 +1,22 @@
+// FIR_IDENTICAL
+// FILE: weatherForecast/Weather.java
+package weatherForecast;
+
+public class Weather {
+    public void test() {}
+}
+
+// FILE: a/a.java
+package a;
+
+import weatherForecast.Weather;
+import weatherForecast.Weather;
+
+public class a {
+    public Weather forecast() { return null; }
+}
+
+// FILE: a.kt
+package a
+
+fun test() = a().forecast().test()

compiler/testData/diagnostics/tests/javac/imports/ImportTwoTimes.txt

@@ -0,0 +1,24 @@
+package
+
+package a {
+    public fun test(): kotlin.Unit
+
+    public open class a {
+        public constructor a()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun forecast(): weatherForecast.Weather!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+package weatherForecast {
+
+    public open class Weather {
+        public constructor Weather()
+        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 test(): kotlin.Unit
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/ImportTwoTimesStar.kt

@@ -0,0 +1,22 @@
+// FIR_IDENTICAL
+// FILE: weatherForecast/Weather.java
+package weatherForecast;
+
+public class Weather {
+    public void test() {}
+}
+
+// FILE: a/A.java
+package a;
+
+import weatherForecast.*;
+import weatherForecast.*;
+
+public class A {
+    public Weather getWeather() { return null; }
+}
+
+// FILE: a.kt
+package a
+
+fun test() = A().getWeather().test()

compiler/testData/diagnostics/tests/javac/imports/ImportTwoTimesStar.txt

@@ -0,0 +1,24 @@
+package
+
+package a {
+    public fun test(): kotlin.Unit
+
+    public open class A {
+        public constructor A()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getWeather(): weatherForecast.Weather!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+package weatherForecast {
+
+    public open class Weather {
+        public constructor Weather()
+        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 test(): kotlin.Unit
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/NestedAndTopLevelClassClash.fir.kt

@@ -0,0 +1,38 @@
+// SKIP_JAVAC
+// FILE: a/B.java
+package a;
+
+public class B {}
+
+// FILE: a/D.java
+package a;
+
+public class D {
+    public static class B {}
+}
+
+// FILE: b/A1.java
+package b;
+
+import a.B;
+import a.D.B;
+
+public class A1 {
+    public B getB() { return null; }
+}
+
+// FILE: b/A2.java
+package b;
+
+import a.*;
+import a.D.*;
+
+public class A2 {
+    public B getB() { return null; }
+}
+
+// FILE: a.kt
+package b
+
+fun test() = A1().getB()
+fun test2() = A2().getB()

compiler/testData/diagnostics/tests/javac/imports/NestedAndTopLevelClassClash.kt

@@ -0,0 +1,38 @@
+// SKIP_JAVAC
+// FILE: a/B.java
+package a;
+
+public class B {}
+
+// FILE: a/D.java
+package a;
+
+public class D {
+    public static class B {}
+}
+
+// FILE: b/A1.java
+package b;
+
+import a.B;
+import a.D.B;
+
+public class A1 {
+    public B getB() { return null; }
+}
+
+// FILE: b/A2.java
+package b;
+
+import a.*;
+import a.D.*;
+
+public class A2 {
+    public B getB() { return null; }
+}
+
+// FILE: a.kt
+package b
+
+fun test() = A1().getB()
+fun test2() = A2().<!MISSING_DEPENDENCY_CLASS!>getB<!>()

compiler/testData/diagnostics/tests/javac/imports/NestedAndTopLevelClassClash.txt

@@ -0,0 +1,46 @@
+package
+
+package a {
+
+    public open class B {
+        public constructor B()
+        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 open class D {
+        public constructor D()
+        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 open class B {
+            public constructor B()
+            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
+        }
+    }
+}
+
+package b {
+    public fun test(): a.B!
+    public fun test2(): B!
+
+    public open class A1 {
+        public constructor A1()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getB(): a.B!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public open class A2 {
+        public constructor A2()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getB(): B!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/NestedClassClash.fir.kt

@@ -0,0 +1,40 @@
+// SKIP_JAVAC
+// FILE: a/A.java
+package a;
+
+public class A {
+    public static class B {}
+}
+
+// FILE: a/D.java
+package a;
+
+public class D {
+    public static class B {}
+}
+
+// FILE: b/A1.java
+package b;
+
+import a.A.B;
+import a.D.B;
+
+public class A1 {
+    public B getB() { return null; }
+}
+
+// FILE: b/A2.java
+package b;
+
+import a.A.*;
+import a.D.*;
+
+public class A2 {
+    public B getB() { return null; }
+}
+
+// FILE: a.kt
+package b
+
+fun test() = A1().getB()
+fun test2() = A2().getB()

compiler/testData/diagnostics/tests/javac/imports/NestedClassClash.kt

@@ -0,0 +1,40 @@
+// SKIP_JAVAC
+// FILE: a/A.java
+package a;
+
+public class A {
+    public static class B {}
+}
+
+// FILE: a/D.java
+package a;
+
+public class D {
+    public static class B {}
+}
+
+// FILE: b/A1.java
+package b;
+
+import a.A.B;
+import a.D.B;
+
+public class A1 {
+    public B getB() { return null; }
+}
+
+// FILE: b/A2.java
+package b;
+
+import a.A.*;
+import a.D.*;
+
+public class A2 {
+    public B getB() { return null; }
+}
+
+// FILE: a.kt
+package b
+
+fun test() = A1().getB()
+fun test2() = A2().<!MISSING_DEPENDENCY_CLASS!>getB<!>()

compiler/testData/diagnostics/tests/javac/imports/NestedClassClash.txt

@@ -0,0 +1,53 @@
+package
+
+package a {
+
+    public open class A {
+        public constructor A()
+        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 open class B {
+            public constructor B()
+            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 open class D {
+        public constructor D()
+        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 open class B {
+            public constructor B()
+            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
+        }
+    }
+}
+
+package b {
+    public fun test(): a.A.B!
+    public fun test2(): B!
+
+    public open class A1 {
+        public constructor A1()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getB(): a.A.B!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public open class A2 {
+        public constructor A2()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getB(): B!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/PackageExplicitAndStartImport.kt

@@ -0,0 +1,32 @@
+// FIR_IDENTICAL
+// FILE: a/x.java
+package a;
+
+public class x {}
+
+// FILE: b/x.java
+package b;
+
+public class x {}
+
+// FILE: c/x.java
+package c;
+
+public class x {}
+
+// FILE: c/y.java
+package c;
+
+import a.x;
+import b.*;
+
+public class y {
+
+    public x getX() { return null; }
+
+}
+
+// FILE: c/test.kt
+package c
+
+fun test() = y().getX()

compiler/testData/diagnostics/tests/javac/imports/PackageExplicitAndStartImport.txt

@@ -0,0 +1,40 @@
+package
+
+package a {
+
+    public open class x {
+        public constructor x()
+        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
+    }
+}
+
+package b {
+
+    public open class x {
+        public constructor x()
+        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
+    }
+}
+
+package c {
+    public fun test(): a.x!
+
+    public open class x {
+        public constructor x()
+        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 open class y {
+        public constructor y()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getX(): a.x!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/PackagePrivateAndPublicNested.fir.kt

@@ -0,0 +1,19 @@
+// FILE: p/Foo.java
+package p;
+
+class Foo {
+    public static class Nested {}
+}
+
+// FILE: foo.kt
+package a
+
+import p.Foo
+import p.Foo.Nested
+
+class Bar : <!EXPOSED_SUPER_CLASS, HIDDEN!>Foo<!>() {
+    protected fun <!EXPOSED_FUNCTION_RETURN_TYPE!>foo<!>(): Nested? = null
+}
+
+private fun foo(): Nested? = null
+private fun bar(): p.Foo.Nested? = null

compiler/testData/diagnostics/tests/javac/imports/PackagePrivateAndPublicNested.kt

@@ -0,0 +1,19 @@
+// FILE: p/Foo.java
+package p;
+
+class Foo {
+    public static class Nested {}
+}
+
+// FILE: foo.kt
+package a
+
+import p.<!INVISIBLE_REFERENCE!>Foo<!>
+import p.<!INVISIBLE_REFERENCE!>Foo<!>.Nested
+
+class Bar : <!EXPOSED_SUPER_CLASS!><!INVISIBLE_MEMBER, INVISIBLE_REFERENCE!>Foo<!>()<!> {
+    protected fun <!EXPOSED_FUNCTION_RETURN_TYPE!>foo<!>(): <!INVISIBLE_REFERENCE!>Nested<!>? = null
+}
+
+private fun foo(): <!INVISIBLE_REFERENCE!>Nested<!>? = null
+private fun bar(): p.<!INVISIBLE_REFERENCE!>Foo<!>.<!INVISIBLE_REFERENCE!>Nested<!>? = null

compiler/testData/diagnostics/tests/javac/imports/PackagePrivateAndPublicNested.txt

@@ -0,0 +1,31 @@
+package
+
+package a {
+    private fun bar(): p.Foo.Nested?
+    private fun foo(): p.Foo.Nested?
+
+    public final class Bar : p.Foo {
+        public constructor Bar()
+        invisible_fake open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        protected final fun foo(): p.Foo.Nested?
+        invisible_fake open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        invisible_fake open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+}
+
+package p {
+
+    public/*package*/ open class Foo {
+        public/*package*/ constructor Foo()
+        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 open class Nested {
+            public constructor Nested()
+            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
+        }
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/TopLevelClassVsPackage.kt

@@ -0,0 +1,43 @@
+// FIR_IDENTICAL
+// FILE: a/b.java
+package a;
+
+public class b {
+    
+    public void a_b() {}
+
+    public class c {
+        public void a_bc() {}
+    }    
+}
+
+// FILE: a.java
+
+public class a {
+    
+    public void _a() {}
+
+    public class b {
+        public void _ab() {}
+    }
+
+}
+
+// FILE: c.java
+
+import a.b;
+
+public class c {
+    public b getB() { return null; }
+}
+
+// FILE: c2.java
+
+public class c2 {
+    public a.b getB() { return null; }
+}
+
+// FILE: e.kt
+
+fun test() = c().getB().c().a_bc()
+fun test2() = c2().getB()._ab()

compiler/testData/diagnostics/tests/javac/imports/TopLevelClassVsPackage.txt

@@ -0,0 +1,55 @@
+package
+
+public fun test(): kotlin.Unit
+public fun test2(): kotlin.Unit
+
+public open class a {
+    public constructor a()
+    public open fun _a(): 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
+
+    public open inner class b {
+        public constructor b()
+        public open fun _ab(): 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
+    }
+}
+
+public open class c {
+    public constructor c()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open fun getB(): a.b!
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public open class c2 {
+    public constructor c2()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open fun getB(): a.b!
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+package a {
+
+    public open class b {
+        public constructor b()
+        public open fun a_b(): 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
+
+        public open inner class c {
+            public constructor c()
+            public open fun a_bc(): 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
+        }
+    }
+}

compiler/testData/diagnostics/tests/javac/imports/TopLevelClassVsPackage2.kt

@@ -0,0 +1,47 @@
+// FIR_IDENTICAL
+// FILE: foo/a/b.java
+package foo.a;
+
+public class b {
+
+    public void a_b() {}
+
+    public class c {
+        public void a_bc() {}
+    }
+}
+
+// FILE: foo/a.java
+package foo;
+
+public class a {
+
+    public void _a() {}
+
+    public class b {
+        public void _ab() {}
+    }
+
+}
+
+// FILE: foo/c.java
+package foo;
+
+import foo.a.b;
+
+public class c {
+    public b getB() { return null; }
+}
+
+// FILE: foo/c2.java
+package foo;
+
+public class c2 {
+    public a.b getB() { return null; }
+}
+
+// FILE: e.kt
+package foo
+
+fun test() = c().getB().c().a_bc()
+fun test2() = c2().getB()._ab()

compiler/testData/diagnostics/tests/javac/imports/TopLevelClassVsPackage2.txt

@@ -0,0 +1,57 @@
+package
+
+package foo {
+    public fun test(): kotlin.Unit
+    public fun test2(): kotlin.Unit
+
+    public open class a {
+        public constructor a()
+        public open fun _a(): 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
+
+        public open inner class b {
+            public constructor b()
+            public open fun _ab(): 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
+        }
+    }
+
+    public open class c {
+        public constructor c()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getB(): foo.a.b!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    public open class c2 {
+        public constructor c2()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open fun getB(): foo.a.b!
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+
+    package foo.a {
+
+        public open class b {
+            public constructor b()
+            public open fun a_b(): 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
+
+            public open inner class c {
+                public constructor c()
+                public open fun a_bc(): 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
+            }
+        }
+    }
+}