Kotlin: Add test case for internal member accessed from java

Author: tamasvajk

java/ql/test/kotlin/library-tests/java_and_kotlin_internal/Java.java

@@ -0,0 +1,5 @@
+public class Java {
+	void javaFun() {
+		new Kotlin().kotlinFun$main();
+	}
+}

java/ql/test/kotlin/library-tests/java_and_kotlin_internal/Kotlin.kt

@@ -0,0 +1,4 @@
+public class Kotlin {
+	internal fun kotlinFun() {
+	}
+}

java/ql/test/kotlin/library-tests/java_and_kotlin_internal/visibility.expected

@@ -0,0 +1,8 @@
+isPublic
+| Kotlin.kt:2:11:3:2 | kotlinFun$main |
+isInternal
+| Kotlin.kt:2:11:3:2 | kotlinFun$main |
+#select
+| Kotlin.kt:2:11:3:2 | kotlinFun$main | final |
+| Kotlin.kt:2:11:3:2 | kotlinFun$main | internal |
+| Kotlin.kt:2:11:3:2 | kotlinFun$main | public |

java/ql/test/kotlin/library-tests/java_and_kotlin_internal/visibility.ql

@@ -0,0 +1,9 @@
+import java
+
+from Method m, string s
+where m.fromSource() and m.hasModifier(s)
+select m, s
+
+query predicate isPublic(Method m) { m.fromSource() and m.isPublic() }
+
+query predicate isInternal(Method m) { m.fromSource() and m.isInternal() }