try to fix VarArgTest

Accoring to spec array of class.getMethods() is not sorted, so we can't just call
getMethods()[0] to get desired method.

compiler/tests/org/jetbrains/jet/codegen/CodegenTestCase.java

@@ -7,10 +7,12 @@ import org.jetbrains.jet.lang.psi.JetFile;
 import org.jetbrains.jet.lang.psi.JetNamespace;
 import org.jetbrains.jet.lang.resolve.AnalyzingUtils;
 import org.jetbrains.jet.parsing.JetParsingTest;
+import org.junit.Assert;
 
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -157,7 +159,21 @@ public abstract class CodegenTestCase extends JetLiteFixture {
     protected Method generateFunction() {
         Class aClass = generateNamespaceClass();
         try {
-            return aClass.getMethods()[0];
+            Method r = null;
+            for (Method method : aClass.getMethods()) {
+                if (method.getDeclaringClass().equals(Object.class)) {
+                    continue;
+                }
+
+                if (r != null) {
+                    throw new AssertionError("more then one public method in class " + aClass);
+                }
+
+                r = method;
+            }
+            if (r == null)
+                throw new AssertionError();
+            return r;
         } catch (Error e) {
             System.out.println(generateToText());
             throw e;

compiler/tests/org/jetbrains/jet/codegen/NamespaceGenTest.java

@@ -487,7 +487,7 @@ public class NamespaceGenTest extends CodegenTestCase {
     public void testTupleLiteral() throws Exception {
         loadText("fun foo() = (1, \"foo\")");
 //        System.out.println(generateToText());
-        final Method main = generateFunction();
+        final Method main = generateFunction("foo");
         Tuple2 tuple2 = (Tuple2) main.invoke(null);
         assertEquals(1, tuple2._1);
         assertEquals("foo", tuple2._2);

compiler/tests/org/jetbrains/jet/codegen/VarArgTest.java

@@ -26,7 +26,7 @@ public class VarArgTest extends CodegenTestCase {
     public void testIntArrayKotlinNoArgs () throws InvocationTargetException, IllegalAccessException {
         loadText("fun test() = testf(); fun testf(vararg ts: Int) = ts");
 //        System.out.println(generateToText());
-        final Method main = generateFunction();
+        final Method main = generateFunction("test");
         Object res = main.invoke(null);
         assertTrue(((int[])res).length == 0);
     }
@@ -34,8 +34,7 @@ public class VarArgTest extends CodegenTestCase {
     public void testIntArrayKotlin () throws InvocationTargetException, IllegalAccessException {
         loadText("fun test() = testf(239, 7); fun testf(vararg ts: Int) = ts");
 //        System.out.println(generateToText());
-        final Method main = generateFunction();
-        System.out.println(main.toString());
+        final Method main = generateFunction("test");
         Object res = main.invoke(null);
         assertTrue(((int[])res).length == 2);
         assertTrue(((int[])res)[0] == 239);
@@ -45,7 +44,7 @@ public class VarArgTest extends CodegenTestCase {
     public void testNullableIntArrayKotlin () throws InvocationTargetException, IllegalAccessException {
         loadText("fun test() = testf(239.byt, 7.byt); fun testf(vararg ts: Byte?) = ts");
 //        System.out.println(generateToText());
-        final Method main = generateFunction();
+        final Method main = generateFunction("test");
         Object res = main.invoke(null);
         assertTrue(((Byte[])res).length == 2);
         assertTrue(((Byte[])res)[0] == (byte)239);
@@ -55,7 +54,7 @@ public class VarArgTest extends CodegenTestCase {
     public void testIntArrayKotlinObj () throws InvocationTargetException, IllegalAccessException {
         loadText("fun test() = testf(\"239\"); fun testf(vararg ts: String) = ts");
 //        System.out.println(generateToText());
-        final Method main = generateFunction();
+        final Method main = generateFunction("test");
         Object res = main.invoke(null);
         assertTrue(((String[])res).length == 1);
         assertTrue(((String[])res)[0].equals("239"));
@@ -64,7 +63,7 @@ public class VarArgTest extends CodegenTestCase {
     public void testArrayT () throws InvocationTargetException, IllegalAccessException {
         loadText("fun test() = _array(2, 4); fun <T> _array(vararg elements : T) = elements");
 //        System.out.println(generateToText());
-        final Method main = generateFunction();
+        final Method main = generateFunction("test");
         Object res = main.invoke(null);
         assertTrue(((Integer[])res).length == 2);
         assertTrue(((Integer[])res)[0].equals(2));