Fixed bug with bad conversion on paste when top-level java class copied

generators/src/org/jetbrains/kotlin/generators/tests/GenerateTests.kt

@@ -588,7 +588,7 @@ fun main(args: Array<String>) {
         }
 
         testClass(javaClass<AbstractJavaToKotlinCopyPasteConversionTest>()) {
-            model("copyPaste/conversion", extension = "java")
+            model("copyPaste/conversion", pattern = """^([^\.]+)\.java$""")
         }
 
         testClass(javaClass<AbstractInsertImportOnPasteTest>()) {

idea/src/org/jetbrains/kotlin/idea/conversion/copy/DataForConversion.kt

@@ -144,8 +144,7 @@ data class DataForConversion private(
         // element's text can be removed from file's text keeping parsing the same
         private fun canDropElementFromText(element: PsiElement): Boolean {
             return when (element) {
-                is PsiWhiteSpace, is PsiComment, is PsiModifierList,
-                is PsiAnnotation, is PsiPackageStatement, is PsiImportList, is PsiImportStatementBase -> true
+                is PsiWhiteSpace, is PsiComment, is PsiModifierList, is PsiAnnotation -> true
 
                 is PsiJavaToken -> {
                     when (element.getTokenType()) {

idea/testData/copyPaste/conversion/ClassWithOverrides.dependency.java

@@ -0,0 +1,8 @@
+package javaPack
+
+import org.jetbrains.annotations.NotNull;
+
+public interface I {
+    @NotNull
+    String foo();
+}

idea/testData/copyPaste/conversion/ClassWithOverrides.expected.kt

@@ -0,0 +1,9 @@
+package to
+
+import javaPack.I
+
+public class C : I {
+    override fun foo(): String {
+        return ""
+    }
+}

idea/testData/copyPaste/conversion/ClassWithOverrides.java

@@ -0,0 +1,11 @@
+package javaPack
+
+import org.jetbrains.annotations.NotNull;
+
+<selection>public class C implements I {
+    @NotNull
+    @Override
+    public String foo() {
+        return "";
+    }
+}</selection>

idea/testData/copyPaste/conversion/FileWithNoPackageStatement.expected.kt

@@ -5,5 +5,3 @@ public object JavaClass {
         println("Hello, world!")
     }
 }
-
-fun main(args: Array<String>) = JavaClass.main(args)

idea/testData/copyPaste/conversion/FileWithNoPackageStatement.java

@@ -1,4 +1,3 @@
-// this test should cause the whole file to be converted at once (with non-selected text stripped) and the main function to be generated
 package helloWorld;
 
 // sample class

idea/tests/org/jetbrains/kotlin/idea/conversion/copy/AbstractJavaToKotlinCopyPasteConversionTest.kt

@@ -58,6 +58,7 @@ public abstract class AbstractJavaToKotlinCopyPasteConversionTest : AbstractCopy
         myFixture.performEditorAction(IdeActions.ACTION_COPY)
 
         configureByDependencyIfExists(testName + ".dependency.kt")
+        configureByDependencyIfExists(testName + ".dependency.java")
 
         configureTargetFile(testName + ".to.kt")
 

idea/tests/org/jetbrains/kotlin/idea/conversion/copy/JavaToKotlinCopyPasteConversionTestGenerated.java

@@ -62,7 +62,7 @@ public class JavaToKotlinCopyPasteConversionTestGenerated extends AbstractJavaTo
     }
 
     public void testAllFilesPresentInConversion() throws Exception {
-        JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/copyPaste/conversion"), Pattern.compile("^(.+)\\.java$"), true);
+        JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("idea/testData/copyPaste/conversion"), Pattern.compile("^([^\\.]+)\\.java$"), true);
     }
 
     @TestMetadata("Arithmetic.java")
@@ -77,6 +77,12 @@ public class JavaToKotlinCopyPasteConversionTestGenerated extends AbstractJavaTo
         doTest(fileName);
     }
 
+    @TestMetadata("ClassWithOverrides.java")
+    public void testClassWithOverrides() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/copyPaste/conversion/ClassWithOverrides.java");
+        doTest(fileName);
+    }
+
     @TestMetadata("Constructor.java")
     public void testConstructor() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/copyPaste/conversion/Constructor.java");