79 lines
2.0 KiB
JavaScript
79 lines
2.0 KiB
JavaScript
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import {tracer, PluginTracer} from '../src/Tracer';
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import sinon from 'sinon';
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import assert from 'assert';
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describe('Tracer', () => {
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let onTrace;
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let traceDisposable;
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beforeEach(() => {
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onTrace = sinon.spy();
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traceDisposable = tracer.onTrace(onTrace);
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tracer.enable();
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});
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afterEach(() => {
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traceDisposable.dispose();
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});
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it('returns no measurement when disabled', () => {
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tracer.disable();
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const measurement = tracer.createMeasurement('test');
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assert(measurement == null);
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assert(onTrace.notCalled);
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});
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it('emits a basic trace event', () => {
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const measurement = tracer.createMeasurement('test');
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measurement.end();
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sinon.assert.calledWith(
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onTrace,
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sinon.match({
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type: 'trace',
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name: 'test',
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args: undefined,
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duration: sinon.match.number,
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}),
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);
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});
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it('emits a complex trace event', () => {
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const measurement = tracer.createMeasurement('test', 'myPlugin', 'aaargh', {
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extra: 'data',
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});
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measurement.end();
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sinon.assert.calledWith(
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onTrace,
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sinon.match({
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type: 'trace',
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name: 'test',
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categories: ['myPlugin'],
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args: {extra: 'data', name: 'aaargh'},
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duration: sinon.match.number,
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}),
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);
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});
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it('calling end twice on measurment should be a no-op', () => {
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const measurement = tracer.createMeasurement('test');
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measurement.end();
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measurement.end();
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sinon.assert.calledOnce(onTrace);
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});
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describe('PluginTracer', () => {
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it('emits events with proper origin/category', () => {
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const pluginTracer = new PluginTracer({
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origin: 'origin',
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category: 'cat',
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});
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const measurement = pluginTracer.createMeasurement('test', 'customCat');
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measurement.end();
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sinon.assert.calledWith(
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onTrace,
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sinon.match({
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type: 'trace',
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name: 'test',
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categories: ['cat:origin:customCat'],
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duration: sinon.match.number,
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}),
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);
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});
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});
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});
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