.gitignore includes files flagged as ignored.

If a file is ignored in the project builder, it is now persisted
into the .gitignore file in the project.

Change-Id: Ic8e5d08b82da5809b1dc2a8427f6563dc9acf00b

.gitignore

@@ -12,8 +12,8 @@ dist
 lib-cov
 logs
 node_modules
-npm-debug.log*
+npm-debug.log
 package
 pids
 reports
-www
+www

generators/app/lib/component/gitignore.js

@@ -53,17 +53,34 @@
    * @returns {generator} The passed generator, for promise chaining.
    */
   function configureGitIgnore (generator) {
-    var ignoreContent = Object.keys(excludedPaths).sort().join('\n');
+    var ignoreContent = buildGitignore();
     if (ignoreContent.length === 0) {
       // Delete the file if there's nothing to ignore.
       projectBuilder.removeFile(filePath);
     } else {
-      projectBuilder.writeFile(filePath, ignoreContent);
+      projectBuilder.writeFile(filePath, buildGitignore);
     }
 
     return generator;
   }
 
+  /**
+   * Generate the content of our .gitignore file from the configured list of excluded paths,
+   * as well as any project-level configured ignoreFiles.
+   *
+   * @returns {string} The content of the .eslintignore file.
+   */
+  function buildGitignore () {
+    var ignoredFiles = projectBuilder.getIgnoredFiles();
+    for (var i = 0; i < ignoredFiles.length; i++) {
+      if (!excludedPaths.hasOwnProperty(ignoredFiles[i])) {
+        excludedPaths[ignoredFiles[i]] = true;
+      }
+    }
+
+    return Object.keys(excludedPaths).sort().join('\n');
+  }
+
   module.exports = {
     init: initGitignore,
     prompt: noop,

spec/app/lib/component/gitignore.js

@@ -84,13 +84,48 @@
 
           var files = projectBuilder.getIncludedFiles();
           var ignoreRef = files[0];
-          var ignoreContent = ignoreRef.content.split('\n');
+          var ignoreContent = ignoreRef.content().split('\n');
           expect(ignoreContent.length).toBe(2);
 
           expect(ignoreContent[0]).toEqual('one');
           expect(ignoreContent[1]).toEqual('two');
         });
 
+      it('should include any files flagged as ignored in the project builder.',
+        function () {
+          mockGenerator.fs.write('.gitignore', '');
+          projectBuilder.ignoreFile('foo/bar.json');
+
+          gitignore.init(mockGenerator);
+          gitignore.prompt(mockGenerator);
+          gitignore.configure(mockGenerator);
+
+          var files = projectBuilder.getIncludedFiles();
+          var ignoreRef = files[0]; // There should only be one file.
+          var ignoreContent = ignoreRef.content().split('\n');
+          expect(ignoreContent.length).toBe(1);
+
+          expect(ignoreContent[0]).toBe('foo/bar.json');
+        });
+
+      it('should de-duplicate file paths from multiple locations.',
+        function () {
+          // include 'node_modules' from both an existing file and from the project builder.
+          mockGenerator.fs.write('.gitignore', ['node_modules'].join('\n'));
+          projectBuilder.ignoreFile('node_modules');
+
+          gitignore.init(mockGenerator);
+          gitignore.prompt(mockGenerator);
+          gitignore.configure(mockGenerator);
+
+          var files = projectBuilder.getIncludedFiles();
+          var ignoreRef = files[0]; // There should only be one file.
+          var ignoreContent = ignoreRef.content().split('\n');
+          expect(ignoreContent.length).toBe(1);
+
+          expect(ignoreContent[0]).toBe('node_modules');
+        });
+
       it('should sort the ignored files.',
         function () {
           mockGenerator.fs.write('.gitignore', ['b_line', 'a_line'].join('\n'));
@@ -101,7 +136,7 @@
 
           var files = projectBuilder.getIncludedFiles();
           var ignoreRef = files[0];
-          var ignoreContent = ignoreRef.content.split('\n');
+          var ignoreContent = ignoreRef.content().split('\n');
           expect(ignoreContent.length).toBe(2);
           expect(ignoreContent[0]).toBe('a_line');
           expect(ignoreContent[1]).toBe('b_line');
@@ -117,7 +152,7 @@
 
           var files = projectBuilder.getIncludedFiles();
           var ignoreRef = files[0];
-          var ignoreContent = ignoreRef.content.split('\n');
+          var ignoreContent = ignoreRef.content().split('\n');
           expect(ignoreContent.length).toBe(2);
           expect(ignoreContent[0]).toBe('1_one');
           expect(ignoreContent[1]).toBe('2_two');
@@ -133,7 +168,7 @@
 
           var files = projectBuilder.getIncludedFiles();
           var ignoreRef = files[0];
-          var ignoreContent = ignoreRef.content.split('\n');
+          var ignoreContent = ignoreRef.content().split('\n');
           expect(ignoreContent.length).toBe(1);
           expect(ignoreContent[0]).toBe('1_one');
         });
@@ -148,7 +183,7 @@
 
           var files = projectBuilder.getIncludedFiles();
           var ignoreRef = files[0];
-          var ignoreContent = ignoreRef.content.split('\n');
+          var ignoreContent = ignoreRef.content().split('\n');
           expect(ignoreContent.length).toBe(1);
           expect(ignoreContent[0]).toBe('1_one');
         });