npe() runtime intrinsic method.

2011-11-26 09:30:24 +02:00
parent a6eeb01b64
commit 2cbd072478
6 changed files with 100 additions and 3 deletions
@@ -0,0 +1,32 @@
+package org.jetbrains.jet.runtime;
+
+import jet.runtime.Intrinsics;
+import junit.framework.TestCase;
+import org.jetbrains.jet.codegen.CodegenTestCase;
+
+import java.lang.reflect.Method;
+
+public class JetNpeTest extends CodegenTestCase {
+    public void testStackTrace () {
+        try {
+            Intrinsics.npe(null);
+            fail("No NPE thrown");
+        }
+        catch (NullPointerException e) {
+            StackTraceElement stackTraceElement = e.getStackTrace()[0];
+            assertEquals(stackTraceElement.getMethodName(), "testStackTrace");
+            assertEquals(stackTraceElement.getClassName(), "org.jetbrains.jet.runtime.JetNpeTest");
+        }
+    }
+    
+    public void testNotNull () throws Exception {
+        loadText("fun box() = if(10.npe() == 10) \"OK\" else \"fail\"");
+        blackBox();
+    }
+
+    public void testNull () throws Exception {
+        loadText("fun box() = if(null.npe() == 10) \"OK\" else \"fail\"");
+        Method box = generateFunction("box");
+        assertThrows(box, NullPointerException.class, null);
+    }
+}