Add test on "kotlinc-js -help" output

compiler/testData/cli/js/jsHelp.args

@@ -0,0 +1 @@
+-help

compiler/testData/cli/js/jsHelp.out

@@ -0,0 +1,16 @@
+Usage: org.jetbrains.jet.cli.common.arguments.K2JSCompilerArguments
+  -output [String] Output file path
+  -libraryFiles [String[,]] Path to zipped lib sources or kotlin files
+  -sourceFiles [String[,]] Source files (dir or file)
+  -sourcemap [flag] Generate SourceMap
+  -target [String] Generate JS files for specific ECMA version (only ECMA 5 is supported)
+  -main [String] Whether a main function should be called; either 'call' or 'noCall', default 'call' (main function will be auto detected)
+  -outputPrefix [String] Path to file which will be added to the beginning of output file
+  -outputPostfix [String] Path to file which will be added to the end of output file
+  -tags [flag] Demarcate each compilation message (error, warning, etc) with an open and close tag
+  -verbose [flag] Enable verbose logging output
+  -version [flag] Display compiler version
+  -help (-h) [flag] Print a synopsis of standard options
+  -suppress [String] Suppress compiler messages by severity (warnings)
+  -printArgs [flag] Print command line arguments
+OK

compiler/tests/org/jetbrains/jet/cli/KotlincExecutableTestGenerated.java

@@ -171,6 +171,11 @@ public class KotlincExecutableTestGenerated extends AbstractKotlincExecutableTes
             JetTestUtils.assertAllTestsPresentByMetadata(this.getClass(), "org.jetbrains.jet.generators.tests.TestsPackage", new File("compiler/testData/cli/js"), Pattern.compile("^(.+)\\.args$"), true);
         }
         
+        @TestMetadata("jsHelp.args")
+        public void testJsHelp() throws Exception {
+            doJsTest("compiler/testData/cli/js/jsHelp.args");
+        }
+        
         @TestMetadata("outputPostfixFileNotFound.args")
         public void testOutputPostfixFileNotFound() throws Exception {
             doJsTest("compiler/testData/cli/js/outputPostfixFileNotFound.args");

compiler/tests/org/jetbrains/jet/cli/js/K2JsCliTest.java

@@ -16,8 +16,8 @@
 
 package org.jetbrains.jet.cli.js;
 
-import junit.framework.Assert;
 import org.jetbrains.jet.cli.CliBaseTest;
+import org.junit.Assert;
 import org.junit.Test;
 
 import java.io.File;
@@ -43,4 +43,9 @@ public class K2JsCliTest extends CliBaseTest {
 
         Assert.assertFalse(new File(tmpdir.getTmpDir(), "out.js").isFile());
     }
+
+    @Test
+    public void jsHelp() throws Exception {
+        executeCompilerCompareOutputJS();
+    }
 }