debian-mirror-gitlab/spec/frontend/editor/editor_lite_spec.js

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import { editor as monacoEditor, languages as monacoLanguages, Uri } from 'monaco-editor';
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import waitForPromises from 'helpers/wait_for_promises';
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import Editor from '~/editor/editor_lite';
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import { DEFAULT_THEME, themes } from '~/ide/lib/themes';
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import { EDITOR_LITE_INSTANCE_ERROR_NO_EL, URI_PREFIX } from '~/editor/constants';
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describe('Base editor', () => {
let editorEl;
let editor;
const blobContent = 'Foo Bar';
const blobPath = 'test.md';
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const blobGlobalId = 'snippet_777';
const fakeModel = { foo: 'bar', dispose: jest.fn() };
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beforeEach(() => {
setFixtures('<div id="editor" data-editor-loading></div>');
editorEl = document.getElementById('editor');
editor = new Editor();
});
afterEach(() => {
editor.dispose();
editorEl.remove();
});
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const createUri = (...paths) => Uri.file([URI_PREFIX, ...paths].join('/'));
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it('initializes Editor with basic properties', () => {
expect(editor).toBeDefined();
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expect(editor.instances).toEqual([]);
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});
it('removes `editor-loading` data attribute from the target DOM element', () => {
editor.createInstance({ el: editorEl });
expect(editorEl.dataset.editorLoading).toBeUndefined();
});
describe('instance of the Editor', () => {
let modelSpy;
let instanceSpy;
let setModel;
let dispose;
beforeEach(() => {
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setModel = jest.fn();
dispose = jest.fn();
modelSpy = jest.spyOn(monacoEditor, 'createModel').mockImplementation(() => fakeModel);
instanceSpy = jest.spyOn(monacoEditor, 'create').mockImplementation(() => ({
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setModel,
dispose,
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onDidDispose: jest.fn(),
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}));
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});
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it('throws an error if no dom element is supplied', () => {
expect(() => {
editor.createInstance();
}).toThrow(EDITOR_LITE_INSTANCE_ERROR_NO_EL);
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expect(modelSpy).not.toHaveBeenCalled();
expect(instanceSpy).not.toHaveBeenCalled();
expect(setModel).not.toHaveBeenCalled();
});
it('creates model to be supplied to Monaco editor', () => {
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editor.createInstance({ el: editorEl, blobPath, blobContent, blobGlobalId: '' });
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expect(modelSpy).toHaveBeenCalledWith(blobContent, undefined, createUri(blobPath));
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expect(setModel).toHaveBeenCalledWith(fakeModel);
});
it('initializes the instance on a supplied DOM node', () => {
editor.createInstance({ el: editorEl });
expect(editor.editorEl).not.toBe(null);
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expect(instanceSpy).toHaveBeenCalledWith(editorEl, expect.anything());
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});
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it('with blobGlobalId, creates model with id in uri', () => {
editor.createInstance({ el: editorEl, blobPath, blobContent, blobGlobalId });
expect(modelSpy).toHaveBeenCalledWith(
blobContent,
undefined,
createUri(blobGlobalId, blobPath),
);
});
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it('initializes instance with passed properties', () => {
const instanceOptions = {
foo: 'bar',
};
editor.createInstance({
el: editorEl,
...instanceOptions,
});
expect(instanceSpy).toHaveBeenCalledWith(editorEl, expect.objectContaining(instanceOptions));
});
it('disposes instance when the editor is disposed', () => {
editor.createInstance({ el: editorEl, blobPath, blobContent, blobGlobalId });
expect(dispose).not.toHaveBeenCalled();
editor.dispose();
expect(dispose).toHaveBeenCalled();
});
});
describe('multiple instances', () => {
let instanceSpy;
let inst1Args;
let inst2Args;
let editorEl1;
let editorEl2;
let inst1;
let inst2;
const readOnlyIndex = '68'; // readOnly option has the internal index of 68 in the editor's options
beforeEach(() => {
setFixtures('<div id="editor1"></div><div id="editor2"></div>');
editorEl1 = document.getElementById('editor1');
editorEl2 = document.getElementById('editor2');
inst1Args = {
el: editorEl1,
blobGlobalId,
};
inst2Args = {
el: editorEl2,
blobContent,
blobPath,
blobGlobalId,
};
editor = new Editor();
instanceSpy = jest.spyOn(monacoEditor, 'create');
});
afterEach(() => {
editor.dispose();
});
it('can initialize several instances of the same editor', () => {
editor.createInstance(inst1Args);
expect(editor.instances).toHaveLength(1);
editor.createInstance(inst2Args);
expect(instanceSpy).toHaveBeenCalledTimes(2);
expect(editor.instances).toHaveLength(2);
});
it('sets independent models on independent instances', () => {
inst1 = editor.createInstance(inst1Args);
inst2 = editor.createInstance(inst2Args);
const model1 = inst1.getModel();
const model2 = inst2.getModel();
expect(model1).toBeDefined();
expect(model2).toBeDefined();
expect(model1).not.toEqual(model2);
});
it('shares global editor options among all instances', () => {
editor = new Editor({
readOnly: true,
});
inst1 = editor.createInstance(inst1Args);
expect(inst1.getOption(readOnlyIndex)).toBe(true);
inst2 = editor.createInstance(inst2Args);
expect(inst2.getOption(readOnlyIndex)).toBe(true);
});
it('allows overriding editor options on the instance level', () => {
editor = new Editor({
readOnly: true,
});
inst1 = editor.createInstance({
...inst1Args,
readOnly: false,
});
expect(inst1.getOption(readOnlyIndex)).toBe(false);
});
it('disposes instances and relevant models independently from each other', () => {
inst1 = editor.createInstance(inst1Args);
inst2 = editor.createInstance(inst2Args);
expect(inst1.getModel()).not.toBe(null);
expect(inst2.getModel()).not.toBe(null);
expect(editor.instances).toHaveLength(2);
expect(monacoEditor.getModels()).toHaveLength(2);
inst1.dispose();
expect(inst1.getModel()).toBe(null);
expect(inst2.getModel()).not.toBe(null);
expect(editor.instances).toHaveLength(1);
expect(monacoEditor.getModels()).toHaveLength(1);
});
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});
describe('implementation', () => {
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let instance;
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beforeEach(() => {
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instance = editor.createInstance({ el: editorEl, blobPath, blobContent });
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});
it('correctly proxies value from the model', () => {
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expect(instance.getValue()).toBe(blobContent);
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});
it('is capable of changing the language of the model', () => {
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// ignore warnings and errors Monaco posts during setup
// (due to being called from Jest/Node.js environment)
jest.spyOn(console, 'warn').mockImplementation(() => {});
jest.spyOn(console, 'error').mockImplementation(() => {});
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const blobRenamedPath = 'test.js';
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expect(instance.getModel().getLanguageIdentifier().language).toBe('markdown');
instance.updateModelLanguage(blobRenamedPath);
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expect(instance.getModel().getLanguageIdentifier().language).toBe('javascript');
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});
it('falls back to plaintext if there is no language associated with an extension', () => {
const blobRenamedPath = 'test.myext';
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const spy = jest.spyOn(console, 'error').mockImplementation(() => {});
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instance.updateModelLanguage(blobRenamedPath);
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expect(spy).not.toHaveBeenCalled();
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expect(instance.getModel().getLanguageIdentifier().language).toBe('plaintext');
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});
});
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describe('extensions', () => {
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let instance;
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const foo1 = jest.fn();
const foo2 = jest.fn();
const bar = jest.fn();
const MyExt1 = {
foo: foo1,
};
const MyExt2 = {
bar,
};
const MyExt3 = {
foo: foo2,
};
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describe('basic functionality', () => {
beforeEach(() => {
instance = editor.createInstance({ el: editorEl, blobPath, blobContent });
});
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it('is extensible with the extensions', () => {
expect(instance.foo).toBeUndefined();
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instance.use(MyExt1);
expect(instance.foo).toEqual(foo1);
});
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it('does not fail if no extensions supplied', () => {
const spy = jest.spyOn(global.console, 'error');
instance.use();
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expect(spy).not.toHaveBeenCalled();
});
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it('is extensible with multiple extensions', () => {
expect(instance.foo).toBeUndefined();
expect(instance.bar).toBeUndefined();
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instance.use([MyExt1, MyExt2]);
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expect(instance.foo).toEqual(foo1);
expect(instance.bar).toEqual(bar);
});
it('uses the last definition of a method in case of an overlap', () => {
instance.use([MyExt1, MyExt2, MyExt3]);
expect(instance).toEqual(
expect.objectContaining({
foo: foo2,
bar,
}),
);
});
it('correctly resolves references withing extensions', () => {
const FunctionExt = {
inst() {
return this;
},
mod() {
return this.getModel();
},
};
instance.use(FunctionExt);
expect(instance.inst()).toEqual(editor.instances[0]);
});
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});
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describe('extensions as an instance parameter', () => {
let editorExtensionSpy;
const instanceConstructor = (extensions = []) => {
return editor.createInstance({
el: editorEl,
blobPath,
blobContent,
blobGlobalId,
extensions,
});
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};
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beforeEach(() => {
editorExtensionSpy = jest.spyOn(Editor, 'pushToImportsArray').mockImplementation(arr => {
arr.push(
Promise.resolve({
default: {},
}),
);
});
});
it.each([undefined, [], [''], ''])(
'does not fail and makes no fetch if extensions is %s',
() => {
instance = instanceConstructor(null);
expect(editorExtensionSpy).not.toHaveBeenCalled();
},
);
it.each`
type | value | callsCount
${'simple string'} | ${'foo'} | ${1}
${'combined string'} | ${'foo, bar'} | ${2}
${'array of strings'} | ${['foo', 'bar']} | ${2}
`('accepts $type as an extension parameter', ({ value, callsCount }) => {
instance = instanceConstructor(value);
expect(editorExtensionSpy).toHaveBeenCalled();
expect(editorExtensionSpy.mock.calls).toHaveLength(callsCount);
});
it.each`
desc | path | expectation
${'~/editor'} | ${'foo'} | ${'~/editor/foo'}
${'~/CUSTOM_PATH with leading slash'} | ${'/my_custom_path/bar'} | ${'~/my_custom_path/bar'}
${'~/CUSTOM_PATH without leading slash'} | ${'my_custom_path/delta'} | ${'~/my_custom_path/delta'}
`('fetches extensions from $desc path', ({ path, expectation }) => {
instance = instanceConstructor(path);
expect(editorExtensionSpy).toHaveBeenCalledWith(expect.any(Array), expectation);
});
it('emits editor-ready event after all extensions were applied', async () => {
const calls = [];
const eventSpy = jest.fn().mockImplementation(() => {
calls.push('event');
});
const useSpy = jest.spyOn(editor, 'use').mockImplementation(() => {
calls.push('use');
});
editorEl.addEventListener('editor-ready', eventSpy);
instance = instanceConstructor('foo, bar');
await waitForPromises();
expect(useSpy.mock.calls).toHaveLength(2);
expect(calls).toEqual(['use', 'use', 'event']);
});
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});
describe('multiple instances', () => {
let inst1;
let inst2;
let editorEl1;
let editorEl2;
beforeEach(() => {
setFixtures('<div id="editor1"></div><div id="editor2"></div>');
editorEl1 = document.getElementById('editor1');
editorEl2 = document.getElementById('editor2');
inst1 = editor.createInstance({ el: editorEl1, blobPath: `foo-${blobPath}` });
inst2 = editor.createInstance({ el: editorEl2, blobPath: `bar-${blobPath}` });
});
afterEach(() => {
editor.dispose();
editorEl1.remove();
editorEl2.remove();
});
it('extends all instances if no specific instance is passed', () => {
editor.use(MyExt1);
expect(inst1.foo).toEqual(foo1);
expect(inst2.foo).toEqual(foo1);
});
it('extends specific instance if it has been passed', () => {
editor.use(MyExt1, inst2);
expect(inst1.foo).toBeUndefined();
expect(inst2.foo).toEqual(foo1);
});
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});
});
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describe('languages', () => {
it('registers custom languages defined with Monaco', () => {
expect(monacoLanguages.getLanguages()).toEqual(
expect.arrayContaining([
expect.objectContaining({
id: 'vue',
}),
]),
);
});
});
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describe('syntax highlighting theme', () => {
let themeDefineSpy;
let themeSetSpy;
let defaultScheme;
beforeEach(() => {
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themeDefineSpy = jest.spyOn(monacoEditor, 'defineTheme').mockImplementation(() => {});
themeSetSpy = jest.spyOn(monacoEditor, 'setTheme').mockImplementation(() => {});
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defaultScheme = window.gon.user_color_scheme;
});
afterEach(() => {
window.gon.user_color_scheme = defaultScheme;
});
it('sets default syntax highlighting theme', () => {
const expectedTheme = themes.find(t => t.name === DEFAULT_THEME);
editor = new Editor();
expect(themeDefineSpy).toHaveBeenCalledWith(DEFAULT_THEME, expectedTheme.data);
expect(themeSetSpy).toHaveBeenCalledWith(DEFAULT_THEME);
});
it('sets correct theme if it is set in users preferences', () => {
const expectedTheme = themes.find(t => t.name !== DEFAULT_THEME);
expect(expectedTheme.name).not.toBe(DEFAULT_THEME);
window.gon.user_color_scheme = expectedTheme.name;
editor = new Editor();
expect(themeDefineSpy).toHaveBeenCalledWith(expectedTheme.name, expectedTheme.data);
expect(themeSetSpy).toHaveBeenCalledWith(expectedTheme.name);
});
it('falls back to default theme if a selected one is not supported yet', () => {
const name = 'non-existent-theme';
const nonExistentTheme = { name };
window.gon.user_color_scheme = nonExistentTheme.name;
editor = new Editor();
expect(themeDefineSpy).not.toHaveBeenCalled();
expect(themeSetSpy).toHaveBeenCalledWith(DEFAULT_THEME);
});
});
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});