First tests

lib/__tests__/getLineAnchorForOffset.js

@@ -1,4 +1,3 @@
-var expect = require('expect');
 var getLineAnchorForOffset = require('../getLineAnchorForOffset');
 
 describe('getLineAnchorForOffset', function() {
@@ -28,4 +27,3 @@ describe('getLineAnchorForOffset', function() {
     });
 
 });
-

lib/__tests__/handle-tab.test.js

@@ -0,0 +1,59 @@
+const { EditorState, ContentState, SelectionState } = require('draft-js');
+const handleTab = require('../handleTab');
+
+const toPlainText = (editorState) => editorState.getCurrentContent().getPlainText();
+const createWithText = (text) => {
+  const contentState = ContentState.createFromText(text);
+  return EditorState.createWithContent(contentState);
+}
+
+const tabs = (times) => "    ".repeat(times || 1);
+
+it('should insert a tab', () => {
+  const evt = { preventDefault: jest.fn() };
+  const initialText = "";
+  const before = createWithText(initialText);
+  const after = handleTab(evt, before);
+
+  expect(toPlainText(before)).toEqual(initialText);
+  expect(toPlainText(after)).toEqual(tabs(1));
+});
+
+it('should prevent the default event behavior', () => {
+  const preventDefault = jest.fn();
+  const evt = { preventDefault };
+  const before = EditorState.createEmpty();
+
+  handleTab(evt, before);
+  expect(preventDefault).toHaveBeenCalled();
+})
+
+it('should add a tab to an existing tab', () => {
+  const evt = { preventDefault: jest.fn() };
+  const initialText = tabs(1);
+  const before = createWithText(initialText);
+  const after = handleTab(evt, before);
+
+  expect(toPlainText(before)).toEqual(initialText);
+  expect(toPlainText(after)).toEqual(initialText + tabs(1));
+})
+
+it('should replace existing content with the tab', () => {
+  const evt = { preventDefault: jest.fn() };
+  const initialText = "hello";
+
+  const currentContent = ContentState.createFromText(initialText);
+  const selectInitialtext = SelectionState.createEmpty(
+    currentContent.getBlockMap().first().getKey()
+  );
+  const before = EditorState.create({
+    allowUndo: true,
+    currentContent,
+    // Focus the entire initial word
+    selection: selectInitialtext.set('focusOffset', initialText.length),
+  });
+
+  const after = handleTab(evt, before);
+  expect(toPlainText(before)).toEqual(initialText);
+  expect(toPlainText(after)).toEqual(tabs(1));
+})

package.json

@@ -4,7 +4,7 @@
   "description": "Collection of utilities to make code blocks edition easy in DraftJS",
   "main": "./lib/index.js",
   "scripts": {
-    "test": "./node_modules/.bin/mocha \"./lib/__tests__/*.js\" --bail --reporter=list",
+    "test": "jest",
     "build": "browserify -t [ babelify --presets [ es2015 react ] ] ./demo/main.js > ./demo/dist.js; cp ./node_modules/prismjs/themes/prism.css ./demo/prism.css; cp ./node_modules/draft-js/dist/Draft.css ./demo/draft.css",
     "deploy": "npm run build; gh-pages -d ./demo",
     "watch": "watch 'npm run build' ./lib",
@@ -39,13 +39,13 @@
     "draft-js": "0.x",
     "draft-js-prism": "^1.0.2",
     "eslint": "^2.11.1",
-    "expect": "^1.20.1",
     "gh-pages": "^0.11.0",
     "http-server": "^0.9.0",
-    "mocha": "^2.5.3",
+    "jest": "^21.1.0",
     "parallelshell": "2.0.0",
     "react": "^15.1.0",
     "react-dom": "^15.1.0",
+    "prismjs": "^1.8.1",
     "watch": "^0.18.0"
   },
   "peerDependencies": {