add browser testing #17

test/_helper.js

@@ -0,0 +1,90 @@
+var transform = require("../lib/6to5/transform");
+var fs        = require("fs");
+var _         = require("lodash");
+
+var fixturesDir = __dirname + "/fixtures";
+
+var humanise = function (val) {
+  return val.replace(/-/g, " ");
+};
+
+var readFile = function (filename) {
+  if (fs.existsSync(filename)) {
+    return fs.readFileSync(filename, "utf8");
+  } else {
+    return "";
+  }
+};
+
+exports.run = function (suites, transform, assert) {
+  _.each(suites, function (testSuite) {
+    suite(testSuite.title, function () {
+      _.each(testSuite.tests, function (task) {
+        test(task.title, function () {
+          var run = function () {
+            transform.test(task.actual, task.expect, task.options);
+          };
+
+          var throwMsg = task.options.throws;
+          if (throwMsg) {
+            // internal api doesn't have this option but it's best not to pollute
+            // the options object with useless options
+            delete task.options.throws;
+
+            assert.throws(run, new RegExp(throwMsg));
+          } else {
+            run();
+          }
+        });
+      });
+    });
+  });
+};
+
+exports.getTests = function () {
+  var suites = [];
+
+  _.each(fs.readdirSync(fixturesDir), function (suiteName) {
+    if (suiteName[0] === ".") return;
+
+    var suite = {
+      options: {},
+      tests: [],
+      title: humanise(suiteName),
+      filename: fixturesDir + "/" + suiteName
+    };
+    suites.push(suite);
+
+    var suiteOptsLoc = suite.filename + "/options.json";
+    if (fs.existsSync(suiteOptsLoc)) suite.options = require(suiteOptsLoc);
+
+    _.each(fs.readdirSync(suite.filename), function (taskName) {
+      if (taskName[0] === ".") return;
+
+      var taskDir = suite.filename + "/" + taskName;
+      if (fs.statSync(taskDir).isFile()) return;
+
+      var actualLoc = taskDir + "/actual.js";
+      var expectLoc = taskDir + "/expected.js";
+
+      var taskOptsLoc = taskDir + "/options.json";
+      var taskOpts = _.merge({ filename: actualLoc }, _.cloneDeep(suite.options));
+      if (fs.existsSync(taskOptsLoc)) _.merge(taskOpts, require(taskOptsLoc));
+
+      suite.tests.push({
+        title: humanise(taskName),
+        options: taskOpts,
+        actual: {
+          code: readFile(actualLoc),
+          filename: actualLoc,
+        },
+        expect: {
+          code: readFile(expectLoc),
+          filename: expectLoc
+        }
+      });
+    });
+  });
+
+  return suites;
+};