Increase tests coverage for xunit reporter

test/reporters/xunit.spec.js

@@ -0,0 +1,316 @@
+'use strict';
+
+var fs = require('fs');
+var mkdirp = require('mkdirp');
+var path = require('path');
+var reporters = require('../../').reporters;
+var XUnit = reporters.XUnit;
+
+describe('XUnit reporter', function () {
+  var stdout;
+  var stdoutWrite;
+  var runner;
+
+  beforeEach(function () {
+    stdout = [];
+    runner = {
+      on: function () {}
+    };
+  });
+
+  describe('if reporter options output is given', function () {
+    var expectedOutput = 'some-output';
+    var options = {
+      reporterOptions: {
+        output: expectedOutput
+      }
+    };
+    describe('but it cant create a write stream', function () {
+      it('should throw expected error', function () {
+        var fsCreateWriteStream = fs.createWriteStream;
+        fs.createWriteStream = false;
+
+        var boundXUnit = XUnit.bind({}, runner, options);
+        boundXUnit.should.throw('file output not supported in browser');
+        fs.createWriteStream = fsCreateWriteStream;
+      });
+    });
+    describe('and it can create a write stream', function () {
+      it('should locate the output dir, create it, then assign as fileStream', function () {
+        var expectedDirectory;
+        var mkdirpSync = mkdirp.sync;
+        var pathDirname = path.dirname;
+        var fsCreateWriteStream = fs.createWriteStream;
+        mkdirp.sync = function (directory) { expectedDirectory = directory; };
+        path.dirname = function (location) { return location; };
+        fs.createWriteStream = function (streamDetails) { return streamDetails; };
+
+        var contextVariables = {
+          fileStream: null
+        };
+        XUnit.call(contextVariables, runner, options);
+
+        expectedDirectory.should.equal(expectedOutput);
+        contextVariables.fileStream.should.equal(expectedOutput);
+
+        fs.createWriteStream = fsCreateWriteStream;
+        mkdirp.sync = mkdirpSync;
+        path.dirname = pathDirname;
+      });
+    });
+  });
+
+  describe('on \'pending\', \'pass\' and \'fail\' events', function () {
+    it('should add test to tests called on \'end\' event', function () {
+      var pendingTest = {
+        name: 'pending',
+        slow: function () {}
+      };
+      var failTest = {
+        name: 'fail',
+        slow: function () {}
+      };
+      var passTest = {
+        name: 'pass',
+        slow: function () {}
+      };
+      runner.on = function (event, callback) {
+        if (event === 'pending') {
+          callback(pendingTest);
+        }
+        if (event === 'pass') {
+          callback(passTest);
+        }
+        if (event === 'fail') {
+          callback(failTest);
+        }
+        if (event === 'end') {
+          callback();
+        }
+      };
+
+      var calledTests = [];
+      XUnit.call({
+        write: function () {},
+        test: function (test) {
+          calledTests.push(test);
+        }
+      }, runner);
+
+      var expectedCalledTests = [
+        pendingTest,
+        passTest,
+        failTest
+      ];
+      calledTests.should.deepEqual(expectedCalledTests);
+    });
+  });
+
+  describe('done', function () {
+    describe('if fileStream is truthly', function () {
+      it('should run callback with failure inside streams end', function () {
+        var xunit = new XUnit({on: function () {}});
+        var callbackArgument = null;
+        var callback = function (failures) {
+          callbackArgument = failures;
+        };
+        var calledEnd = false;
+        var expectedFailure = 'some-failures';
+        var fileStream = {
+          end: function (callback) {
+            calledEnd = true;
+            callback();
+          }
+        };
+        xunit.done.call(
+          { fileStream: fileStream },
+          expectedFailure,
+          callback
+        );
+
+        calledEnd.should.be.true();
+        callbackArgument.should.equal(expectedFailure);
+      });
+    });
+    describe('if fileStream is falsy', function () {
+      it('should run callback with failure', function () {
+        var xunit = new XUnit({on: function () {}});
+        var callbackArgument = null;
+        var callback = function (failures) {
+          callbackArgument = failures;
+        };
+        var expectedFailure = 'some-failures';
+        xunit.done.call(
+          { fileStream: false },
+          expectedFailure,
+          callback
+        );
+
+        callbackArgument.should.equal(expectedFailure);
+      });
+    });
+  });
+
+  describe('write', function () {
+    describe('if fileStream is truthly', function () {
+      it('should call fileStream write with line and new line', function () {
+        var expectedWrite = null;
+        var xunit = new XUnit({on: function () {}});
+        var fileStream = {
+          write: function (write) {
+            expectedWrite = write;
+          }
+        };
+        var expectedLine = 'some-line';
+        xunit.write.call(
+          { fileStream: fileStream },
+          expectedLine
+        );
+
+        expectedWrite.should.equal(expectedLine + '\n');
+      });
+    });
+    describe('if fileStream is falsy and stdout exists', function () {
+      it('should call write with line and new line', function () {
+        stdoutWrite = process.stdout.write;
+        process.stdout.write = function (string) {
+          stdout.push(string);
+        };
+
+        var xunit = new XUnit({on: function () {}});
+        var expectedLine = 'some-line';
+        xunit.write.call(
+          { fileStream: false },
+          expectedLine
+        );
+
+        process.stdout.write = stdoutWrite;
+
+        stdout[0].should.equal(expectedLine + '\n');
+      });
+    });
+    describe('if fileStream is falsy and stdout does not exist', function () {
+      it('should call write with line', function () {
+        stdoutWrite = process;
+        process = false; // eslint-disable-line no-native-reassign, no-global-assign
+        var cachedConsoleLog = console.log;
+        console.log = function (string) {
+          stdout.push(string);
+        };
+
+        var xunit = new XUnit({on: function () {}});
+        var expectedLine = 'some-line';
+        xunit.write.call(
+          { fileStream: false },
+          expectedLine
+        );
+
+        console.log = cachedConsoleLog;
+        process = stdoutWrite; // eslint-disable-line no-native-reassign, no-global-assign
+        stdout[0].should.equal(expectedLine);
+      });
+    });
+  });
+
+  describe('test', function () {
+    describe('on test failure', function () {
+      it('should write expected tag with error details', function () {
+        var xunit = new XUnit({on: function () {}});
+
+        var expectedWrite = null;
+        var expectedClassName = 'fullTitle';
+        var expectedTitle = 'some title';
+        var expectedMessage = 'some message';
+        var expectedStack = 'some-stack';
+        var expectedTest = {
+          state: 'failed',
+          title: expectedTitle,
+          parent: {
+            fullTitle: function () {
+              return expectedClassName;
+            }
+          },
+          duration: 1000,
+          err: {
+            message: expectedMessage,
+            stack: expectedStack
+          }
+        };
+        xunit.test.call(
+          {
+            write: function (string) {
+              expectedWrite = string;
+            }
+          },
+          expectedTest
+        );
+
+        var expectedTag = '<testcase classname="' + expectedClassName + '" name="' + expectedTitle + '" time="1"><failure>' + expectedMessage + '\n' + expectedStack + '</failure></testcase>';
+
+        expectedWrite.should.equal(expectedTag);
+      });
+    });
+    describe('on test pending', function () {
+      it('should write expected tag', function () {
+        var xunit = new XUnit({on: function () {}});
+
+        var expectedClassName = 'fullTitle';
+        var expectedTitle = 'some title';
+        var expectedTest = {
+          isPending: function () { return true; },
+          title: expectedTitle,
+          parent: {
+            fullTitle: function () {
+              return expectedClassName;
+            }
+          },
+          duration: 1000
+        };
+        var expectedWrite = null;
+        xunit.test.call(
+          {
+            write: function (string) {
+              expectedWrite = string;
+            }
+          },
+          expectedTest
+        );
+
+        var expectedTag = '<testcase classname="' + expectedClassName + '" name="' + expectedTitle + '" time="1"><skipped/></testcase>';
+
+        expectedWrite.should.equal(expectedTag);
+      });
+    });
+    describe('on test in any other state', function () {
+      it('should write expected tag', function () {
+        var xunit = new XUnit({on: function () {}});
+
+        var expectedClassName = 'fullTitle';
+        var expectedTitle = 'some title';
+        var expectedTest = {
+          isPending: function () { return false; },
+          title: expectedTitle,
+          parent: {
+            fullTitle: function () {
+              return expectedClassName;
+            }
+          },
+          duration: false
+        };
+        var expectedWrite = null;
+        xunit.test.call(
+          {
+            write: function (string) {
+              expectedWrite = string;
+            }
+          },
+          expectedTest
+        );
+
+        var expectedTag = '<testcase classname="' + expectedClassName + '" name="' + expectedTitle + '" time="0"/>';
+
+        expectedWrite.should.equal(expectedTag);
+      });
+    });
+  });
+});