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dfdbd4465c
The plugins service now accepts an array of plugin instances to register or unregister (for consistency, renamed `Chart.plugins.remove` to `unregister`). Also added a few methods to manipulate registered plugins, such as `count`, `getAll` and `clear` (mainly used by our unit tests).
101 lines
3.0 KiB
JavaScript
101 lines
3.0 KiB
JavaScript
describe('Chart.plugins', function() {
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var oldPlugins;
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beforeAll(function() {
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oldPlugins = Chart.plugins.getAll();
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});
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afterAll(function() {
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Chart.plugins.register(oldPlugins);
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});
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beforeEach(function() {
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Chart.plugins.clear();
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});
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describe('Chart.plugins.register', function() {
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it('should register a plugin', function() {
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Chart.plugins.register({});
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expect(Chart.plugins.count()).toBe(1);
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Chart.plugins.register({});
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expect(Chart.plugins.count()).toBe(2);
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});
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it('should register an array of plugins', function() {
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Chart.plugins.register([{}, {}, {}]);
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expect(Chart.plugins.count()).toBe(3);
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});
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it('should succeed to register an already registered plugin', function() {
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var plugin = {};
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Chart.plugins.register(plugin);
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expect(Chart.plugins.count()).toBe(1);
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Chart.plugins.register(plugin);
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expect(Chart.plugins.count()).toBe(1);
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Chart.plugins.register([{}, plugin, plugin]);
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expect(Chart.plugins.count()).toBe(2);
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});
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});
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describe('Chart.plugins.unregister', function() {
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it('should unregister a plugin', function() {
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var plugin = {};
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Chart.plugins.register(plugin);
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expect(Chart.plugins.count()).toBe(1);
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Chart.plugins.unregister(plugin);
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expect(Chart.plugins.count()).toBe(0);
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});
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it('should unregister an array of plugins', function() {
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var plugins = [{}, {}, {}];
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Chart.plugins.register(plugins);
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expect(Chart.plugins.count()).toBe(3);
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Chart.plugins.unregister(plugins.slice(0, 2));
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expect(Chart.plugins.count()).toBe(1);
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});
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it('should succeed to unregister a plugin not registered', function() {
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var plugin = {};
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Chart.plugins.register(plugin);
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expect(Chart.plugins.count()).toBe(1);
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Chart.plugins.unregister({});
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expect(Chart.plugins.count()).toBe(1);
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Chart.plugins.unregister([{}, plugin]);
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expect(Chart.plugins.count()).toBe(0);
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});
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});
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describe('Chart.plugins.notify', function() {
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it('should call plugins with arguments', function() {
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var myplugin = {
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count: 0,
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trigger: function(chart) {
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myplugin.count = chart.count;
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}
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};
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Chart.plugins.register(myplugin);
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Chart.plugins.notify('trigger', [{ count: 10 }]);
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expect(myplugin.count).toBe(10);
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});
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it('should return TRUE if no plugin explicitly returns FALSE', function() {
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Chart.plugins.register({ check: function() {} });
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Chart.plugins.register({ check: function() { return; } });
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Chart.plugins.register({ check: function() { return null; } });
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Chart.plugins.register({ check: function() { return 42 } });
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var res = Chart.plugins.notify('check');
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expect(res).toBeTruthy();
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});
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it('should return FALSE if no plugin explicitly returns FALSE', function() {
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Chart.plugins.register({ check: function() {} });
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Chart.plugins.register({ check: function() { return; } });
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Chart.plugins.register({ check: function() { return false; } });
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Chart.plugins.register({ check: function() { return 42 } });
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var res = Chart.plugins.notify('check');
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expect(res).toBeFalsy();
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});
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});
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});
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