JetDiagnosticsTest for using java enum in kotlin.

compiler/testData/diagnostics/tests/enum/importEnumFromJava.kt

@@ -0,0 +1,7 @@
+// FILE: test.kt
+
+package test
+
+import java.util.concurrent.TimeUnit.*
+
+val c = SECONDS

compiler/testData/diagnostics/tests/enum/javaEnumValueOfMethod.kt

@@ -0,0 +1,11 @@
+// FILE: A.java
+public enum A {
+    ENTRY;
+}
+
+// FILE: test.kt
+package test
+
+fun main() {
+    A.valueOf("ENTRY"): A
+}

compiler/testData/diagnostics/tests/enum/javaEnumValuesMethod.kt

@@ -0,0 +1,12 @@
+// FILE: A.java
+public enum A {
+    ENTRY,
+    ANOTHER;
+}
+
+// FILE: test.kt
+package vvv
+
+fun main() {
+     A.values(): Array<A>
+}

compiler/testData/diagnostics/tests/enum/javaEnumWithFuns.kt

@@ -0,0 +1,18 @@
+// FILE: A.java
+public enum A {
+    ENTRY,
+    ANOTHER;
+    
+    public String s() {
+        return "";
+    }
+}
+
+// FILE: test.kt
+
+package vvv
+
+fun main() {
+    val c = A.ENTRY
+    c.s()
+}

compiler/testData/diagnostics/tests/enum/javaEnumWithNameClashing.kt

@@ -0,0 +1,17 @@
+// FILE: A.java
+public enum A {
+    ENTRY,
+    ANOTHER;
+
+    public String ENTRY = "";
+}
+
+// FILE: test.kt
+
+package vvv
+
+fun main() {
+    val c: A = A.ENTRY
+    val <!UNUSED_VARIABLE!>c2<!>: String? = c.ENTRY
+    val <!UNUSED_VARIABLE!>c3<!>: String? = A.ANOTHER.ENTRY
+}

compiler/testData/diagnostics/tests/enum/javaEnumWithProperty.kt

@@ -0,0 +1,21 @@
+// FILE: A.java
+public enum A {
+    ENTRY("1"),
+    ANOTHER("2");
+
+    public String s;
+
+    private A(String s) {
+        this.s = s;
+    }
+}
+
+// FILE: test.kt
+
+package vvv
+
+fun main() {
+    val c = A.ENTRY
+    c.s
+    A.ANOTHER.s
+}