added 100% coverage for json stream

test/reporters/json-stream.spec.js

@@ -0,0 +1,138 @@
+var reporters = require('../../').reporters;
+var JSONStream = reporters.JSONStream;
+
+describe('Json Stream reporter', function () {
+  var runner;
+  var stdout;
+  var stdoutWrite;
+
+  beforeEach(function () {
+    stdout = [];
+    runner = {};
+    stdoutWrite = process.stdout.write;
+    process.stdout.write = function (string) {
+      stdout.push(string);
+    };
+  });
+
+  describe('on start', function () {
+    it('should write stringified start with expected total', function () {
+      runner.on = function (event, callback) {
+        if (event === 'start') {
+          callback();
+        }
+      };
+      var expectedTotal = 12;
+      runner.total = expectedTotal;
+      JSONStream.call({}, runner);
+
+      process.stdout.write = stdoutWrite;
+
+      stdout[0].should.deepEqual('[\"start\",{\"total\":' + expectedTotal + '}]\n');
+    });
+  });
+
+  describe('on pass', function () {
+    it('should write stringified test data', function () {
+      var expectedTitle = 'some title';
+      var expectedFullTitle = 'full title';
+      var expectedDuration = 1000;
+      var currentRetry = 1;
+      var expectedTest = {
+        title: expectedTitle,
+        fullTitle: function () { return expectedFullTitle; },
+        duration: expectedDuration,
+        currentRetry: function () { return currentRetry; },
+        slow: function () {}
+      };
+      runner.on = function (event, callback) {
+        if (event === 'pass') {
+          callback(expectedTest);
+        }
+      };
+      JSONStream.call({}, runner);
+
+      process.stdout.write = stdoutWrite;
+
+      stdout[0].should.deepEqual('["pass",{"title":"' + expectedTitle + '","fullTitle":"' + expectedFullTitle + '","duration":' + expectedDuration + ',"currentRetry":' + currentRetry + '}]\n');
+    });
+  });
+
+  describe('on fail', function () {
+    describe('if error stack exists', function () {
+      it('should write stringified test data with error data', function () {
+        var expectedTitle = 'some title';
+        var expectedFullTitle = 'full title';
+        var expectedDuration = 1000;
+        var currentRetry = 1;
+        var expectedTest = {
+          title: expectedTitle,
+          fullTitle: function () { return expectedFullTitle; },
+          duration: expectedDuration,
+          currentRetry: function () { return currentRetry; },
+          slow: function () {}
+        };
+        var expectedErrorMessage = 'error message';
+        var expectedErrorStack = 'error stack';
+        var expectedError = {
+          message: expectedErrorMessage,
+          stack: expectedErrorStack
+        }
+        runner.on = function (event, callback) {
+          if (event === 'fail') {
+            callback(expectedTest, expectedError);
+          }
+        };
+        JSONStream.call({}, runner);
+
+        process.stdout.write = stdoutWrite;
+
+        stdout[0].should.deepEqual('["fail",{"title":"' + expectedTitle + '","fullTitle":"' + expectedFullTitle + '","duration":' + expectedDuration + ',"currentRetry":' + currentRetry + ',"err":"' + expectedErrorMessage + '","stack":"' + expectedErrorStack + '"}]\n');
+      });
+    });
+    describe('if error stack does not exist', function () {
+      it('should write stringified test data with error data', function () {
+        var expectedTitle = 'some title';
+        var expectedFullTitle = 'full title';
+        var expectedDuration = 1000;
+        var currentRetry = 1;
+        var expectedTest = {
+          title: expectedTitle,
+          fullTitle: function () { return expectedFullTitle; },
+          duration: expectedDuration,
+          currentRetry: function () { return currentRetry; },
+          slow: function () {}
+        };
+        var expectedErrorMessage = 'error message';
+        var expectedError = {
+          message: expectedErrorMessage
+        }
+        runner.on = function (event, callback) {
+          if (event === 'fail') {
+            callback(expectedTest, expectedError);
+          }
+        };
+        JSONStream.call({}, runner);
+
+        process.stdout.write = stdoutWrite;
+
+        stdout[0].should.deepEqual('["fail",{"title":"' + expectedTitle + '","fullTitle":"' + expectedFullTitle + '","duration":' + expectedDuration + ',"currentRetry":' + currentRetry + ',"err":"' + expectedErrorMessage + '","stack":null}]\n');
+      });
+    });
+  });
+
+  describe('on end', function () {
+    it('should write end details', function () {
+      runner.on = function (event, callback) {
+        if (event === 'end') {
+          callback();
+        }
+      };
+      JSONStream.call({}, runner);
+
+      process.stdout.write = stdoutWrite;
+
+      stdout[0].should.match(/end/);
+    });
+  });
+});