added lexer/parser support for templated metric expressions, karma test runner is working

src/test/karma.conf.js

@@ -0,0 +1,27 @@
+module.exports = function(config) {
+  config.set({
+    basePath: '../',
+
+    frameworks: ['mocha', 'requirejs', 'expect'],
+
+    // list of files / patterns to load in the browser
+    files: [
+      'test/test-main.js',
+      {pattern: 'app/**/*.js', included: false},
+      {pattern: 'test/**/*.js', included: false}
+    ],
+
+    // list of files to exclude
+    exclude: [
+    ],
+
+    reporters: ['progress'],
+    port: 9876,
+    colors: true,
+    logLevel: config.LOG_INFO,
+    autoWatch: true,
+    browsers: ['Chrome'],
+    captureTimeout: 60000,
+    singleRun: false
+  });
+};

src/test/specs/lexer-specs.js

@@ -30,6 +30,15 @@ define([
       expect(tokens[tokens.length - 1].value).to.be(')');
     });
 
+    it('should tokenize metric with template parameter', function() {
+      var lexer = new Lexer("metric.[[server]].test");
+      var tokens = lexer.tokenize();
+      expect(tokens[2].type).to.be('templateStart');
+      expect(tokens[3].type).to.be('identifier');
+      expect(tokens[3].value).to.be('server');
+      expect(tokens[4].type).to.be('templateEnd');
+    });
+
     it('should handle error with unterminated string', function() {
       var lexer = new Lexer("alias(metric, 'asd)");
       var tokens = lexer.tokenize();

src/test/specs/parser-specs.js

@@ -54,6 +54,15 @@ define([
       expect(rootNode.params[1].type).to.be('metric');
     });
 
+    it('function with templated series', function() {
+      var parser = new Parser("sum(test.[[server]].count)");
+      var rootNode = parser.getAst();
+
+      expect(rootNode.message).to.be(undefined)
+      expect(rootNode.params[0].type).to.be('metric');
+      expect(rootNode.params[0].segments[1].type).to.be('template');
+    });
+
     it('invalid metric expression', function() {
       var parser = new Parser('metric.test.*.asd.');
       var rootNode = parser.getAst();

src/test/test-main.js

@@ -0,0 +1,10 @@
+require.config({
+    baseUrl:'base'
+});
+
+require([
+  'test/specs/lexer-specs',
+  'test/specs/parser-specs',
+], function () {
+  window.__karma__.start();
+});