toggle comment functionality (Meta-7)

test/mode/JavaScriptTest.js

@@ -0,0 +1,51 @@
+var JavaScriptTest = new TestCase("mode.JavaScriptTest", {
+
+    setUp : function() {
+        this.mode = new ace.mode.JavaScript();
+    },
+
+    "test: getTokenizer() (smoke test)" : function() {
+        var tokenizer = this.mode.getTokenizer();
+
+        assertTrue(tokenizer instanceof ace.Tokenizer);
+
+        var tokens = tokenizer.getLineTokens("'juhu'", "start").tokens;
+        assertEquals("string", tokens[0].type);
+    },
+
+    "test: toggle comment lines should prepend '//' to each line" : function() {
+        var doc = new ace.TextDocument(["  abc", "cde", "fg"].join("\n"));
+
+        var range =  {
+            start: {row: 0, column: 3},
+            end: {row: 1, column: 1}
+        };
+
+        var comment = this.mode.toggleCommentLines(doc, range);
+        assertEquals(["//  abc", "//cde", "fg"].join("\n"), doc.toString());
+    },
+
+    "test: toggle comment on commented lines should remove leading '//' chars" : function() {
+        var doc = new ace.TextDocument(["//  abc", "//cde", "fg"].join("\n"));
+
+        var range =  {
+            start: {row: 0, column: 3},
+            end: {row: 1, column: 1}
+        };
+
+        var comment = this.mode.toggleCommentLines(doc, range);
+        assertEquals(["  abc", "cde", "fg"].join("\n"), doc.toString());
+    },
+
+    "test: toggle comment on multiple lines with one commented line prepend '//' to each line" : function() {
+        var doc = new ace.TextDocument(["//  abc", "//cde", "fg"].join("\n"));
+
+        var range =  {
+            start: {row: 0, column: 3},
+            end: {row: 2, column: 1}
+        };
+
+        var comment = this.mode.toggleCommentLines(doc, range);
+        assertEquals(["////  abc", "////cde", "//fg"].join("\n"), doc.toString());
+    }
+});