Add test for readme parsing

lib/models/readme.js

@@ -12,6 +12,14 @@ Readme.prototype.getFile = function() {
     return this.get('file');
 };
 
+Readme.prototype.getTitle = function() {
+    return this.get('title');
+};
+
+Readme.prototype.getDescription = function() {
+    return this.get('description');
+};
+
 /**
     Create a new readme
 

lib/parse/__tests__/parseReadme.js

@@ -0,0 +1,38 @@
+jest.autoMockOff();
+
+var Promise = require('../../utils/promise');
+var Book = require('../../models/book');
+var createMockFS = require('../../fs/mock');
+
+describe('parseReadme', function() {
+    var parseReadme = require('../parseReadme');
+
+    pit('should parse summary if exists', function() {
+        var fs = createMockFS({
+            'README.md': '# Hello\n\nAnd here is the description.'
+        });
+        var book = Book.createForFS(fs);
+
+        return parseReadme(book)
+        .then(function(resultBook) {
+            var readme = resultBook.getReadme();
+            var file = readme.getFile();
+
+            expect(file.exists()).toBeTruthy();
+            expect(readme.getTitle()).toBe('Hello');
+            expect(readme.getDescription()).toBe('And here is the description.');
+        });
+    });
+
+    pit('should fail if doesn\'t exist', function() {
+        var fs = createMockFS({});
+        var book = Book.createForFS(fs);
+
+        return parseReadme(book)
+        .then(function(resultBook) {
+            throw new Error('It should have fail');
+        }, function() {
+            return Promise();
+        });
+    });
+});