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83 lines
2.5 KiB
JavaScript
83 lines
2.5 KiB
JavaScript
const Gutter = require('../src/gutter');
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describe('Gutter', () => {
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const fakeGutterContainer = {
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scheduleComponentUpdate() {}
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};
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const name = 'name';
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describe('::hide', () =>
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it('hides the gutter if it is visible.', () => {
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const options = {
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name,
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visible: true
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};
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const gutter = new Gutter(fakeGutterContainer, options);
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const events = [];
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gutter.onDidChangeVisible(gutter => events.push(gutter.isVisible()));
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expect(gutter.isVisible()).toBe(true);
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gutter.hide();
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expect(gutter.isVisible()).toBe(false);
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expect(events).toEqual([false]);
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gutter.hide();
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expect(gutter.isVisible()).toBe(false);
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// An event should only be emitted when the visibility changes.
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expect(events.length).toBe(1);
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}));
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describe('::show', () =>
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it('shows the gutter if it is hidden.', () => {
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const options = {
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name,
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visible: false
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};
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const gutter = new Gutter(fakeGutterContainer, options);
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const events = [];
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gutter.onDidChangeVisible(gutter => events.push(gutter.isVisible()));
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expect(gutter.isVisible()).toBe(false);
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gutter.show();
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expect(gutter.isVisible()).toBe(true);
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expect(events).toEqual([true]);
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gutter.show();
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expect(gutter.isVisible()).toBe(true);
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// An event should only be emitted when the visibility changes.
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expect(events.length).toBe(1);
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}));
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describe('::destroy', () => {
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let mockGutterContainer, mockGutterContainerRemovedGutters;
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beforeEach(() => {
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mockGutterContainerRemovedGutters = [];
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mockGutterContainer = {
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removeGutter(destroyedGutter) {
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mockGutterContainerRemovedGutters.push(destroyedGutter);
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}
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};
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});
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it('removes the gutter from its container.', () => {
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const gutter = new Gutter(mockGutterContainer, { name });
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gutter.destroy();
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expect(mockGutterContainerRemovedGutters).toEqual([gutter]);
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});
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it('calls all callbacks registered on ::onDidDestroy.', () => {
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const gutter = new Gutter(mockGutterContainer, { name });
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let didDestroy = false;
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gutter.onDidDestroy(() => {
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didDestroy = true;
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});
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gutter.destroy();
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expect(didDestroy).toBe(true);
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});
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it('does not allow destroying the line-number gutter', () => {
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const gutter = new Gutter(mockGutterContainer, { name: 'line-number' });
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expect(gutter.destroy).toThrow();
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});
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});
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});
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