K1/K2: add a test for KT-50008

compiler/testData/diagnostics/foreignAnnotationsTests/java8Tests/jspecify/strictMode/NonPlatformTypeParameter.fir.kt

@@ -0,0 +1,35 @@
+// !LANGUAGE: +ProhibitUsingNullableTypeParameterAgainstNotNullAnnotated +TypeEnhancementImprovementsInStrictMode
+// JSPECIFY_STATE: strict
+// MUTE_FOR_PSI_CLASS_FILES_READING
+
+// FILE: NonPlatformTypeParameter.java
+import org.jspecify.annotations.*;
+
+public class NonPlatformTypeParameter<T extends @Nullable Object> {
+    public void foo(T t) {}
+    public <E extends @Nullable Object> void bar(E e) {}
+}
+
+// FILE: Test.java
+public class Test {}
+
+// FILE: main.kt
+fun <T : Test> main(a1: NonPlatformTypeParameter<Any?>, a2: NonPlatformTypeParameter<Test>, x: T): Unit {
+    a1.foo(null)
+    a1.bar<Test?>(null)
+    // jspecify_nullness_mismatch
+    a1.bar<T>(<!NULL_FOR_NONNULL_TYPE!>null<!>)
+    a1.bar<T>(x)
+
+    // jspecify_nullness_mismatch
+    a2.foo(<!NULL_FOR_NONNULL_TYPE!>null<!>)
+    a2.bar<Test?>(null)
+    // jspecify_nullness_mismatch
+    a2.bar<T>(<!NULL_FOR_NONNULL_TYPE!>null<!>)
+    a2.bar<T>(x)
+}
+
+fun testNullable(a1: NonPlatformTypeParameter<Test>, x: Test?) {
+    // jspecify_nullness_mismatch
+    a1.foo(<!ARGUMENT_TYPE_MISMATCH!>x<!>)
+}

compiler/testData/diagnostics/foreignAnnotationsTests/java8Tests/jspecify/strictMode/NonPlatformTypeParameter.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // !LANGUAGE: +ProhibitUsingNullableTypeParameterAgainstNotNullAnnotated +TypeEnhancementImprovementsInStrictMode
 // JSPECIFY_STATE: strict
 // MUTE_FOR_PSI_CLASS_FILES_READING
@@ -29,3 +28,8 @@ fun <T : Test> main(a1: NonPlatformTypeParameter<Any?>, a2: NonPlatformTypeParam
     a2.bar<T>(<!NULL_FOR_NONNULL_TYPE!>null<!>)
     a2.bar<T>(x)
 }
+
+fun testNullable(a1: NonPlatformTypeParameter<Test>, x: Test?) {
+    // jspecify_nullness_mismatch
+    a1.foo(<!TYPE_MISMATCH!>x<!>)
+}

compiler/testData/diagnostics/foreignAnnotationsTests/java8Tests/jspecify/strictMode/NonPlatformTypeParameter.txt

@@ -1,6 +1,7 @@
 package
 
 public fun </*0*/ T : Test> main(/*0*/ a1: NonPlatformTypeParameter<kotlin.Any?>, /*1*/ a2: NonPlatformTypeParameter<Test>, /*2*/ x: T): kotlin.Unit
+public fun testNullable(/*0*/ a1: NonPlatformTypeParameter<Test>, /*1*/ x: Test?): kotlin.Unit
 
 public open class NonPlatformTypeParameter</*0*/ T> {
     public constructor NonPlatformTypeParameter</*0*/ T>()

compiler/testData/diagnostics/foreignAnnotationsTests/java8Tests/jspecify/warnMode/NonPlatformTypeParameter.fir.kt

@@ -25,3 +25,7 @@ fun <T : Test> main(a1: NonPlatformTypeParameter<Any?>, a2: NonPlatformTypeParam
     a2.bar<T>(null)
     a2.bar<T>(x)
 }
+
+fun testNullable(a1: NonPlatformTypeParameter<Test>, x: Test?) {
+    a1.foo(x)
+}

compiler/testData/diagnostics/foreignAnnotationsTests/java8Tests/jspecify/warnMode/NonPlatformTypeParameter.kt

@@ -28,3 +28,8 @@ fun <T : Test> main(a1: NonPlatformTypeParameter<Any?>, a2: NonPlatformTypeParam
     a2.bar<T>(<!NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS!>null<!>)
     a2.bar<T>(x)
 }
+
+fun testNullable(a1: NonPlatformTypeParameter<Test>, x: Test?) {
+    // jspecify_nullness_mismatch
+    a1.foo(<!NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS!>x<!>)
+}

compiler/testData/diagnostics/foreignAnnotationsTests/java8Tests/jspecify/warnMode/NonPlatformTypeParameter.txt

@@ -1,6 +1,7 @@
 package
 
 public fun </*0*/ T : Test> main(/*0*/ a1: NonPlatformTypeParameter<kotlin.Any?>, /*1*/ a2: NonPlatformTypeParameter<Test>, /*2*/ x: T): kotlin.Unit
+public fun testNullable(/*0*/ a1: NonPlatformTypeParameter<Test>, /*1*/ x: Test?): kotlin.Unit
 
 public open class NonPlatformTypeParameter</*0*/ T : @org.jspecify.annotations.Nullable kotlin.Any!> {
     public constructor NonPlatformTypeParameter</*0*/ T : @org.jspecify.annotations.Nullable kotlin.Any!>()