|
| 1 | +'use strict'; |
| 2 | + |
| 3 | +const assert = require('assert'); |
| 4 | + |
| 5 | +// Mock @opentelemetry/api so we can drive captureCurrentTraceContext |
| 6 | +// without needing a registered SDK or propagator. The api package is a |
| 7 | +// runtime dep of arsenal but we can stub the small surface it consumes. |
| 8 | +const mockActive = jest.fn(); |
| 9 | +const mockGetSpan = jest.fn(); |
| 10 | +const mockInject = jest.fn(); |
| 11 | + |
| 12 | +jest.mock('@opentelemetry/api', () => ({ |
| 13 | + context: { active: mockActive }, |
| 14 | + trace: { getSpan: mockGetSpan }, |
| 15 | + propagation: { inject: mockInject }, |
| 16 | +})); |
| 17 | + |
| 18 | +const { |
| 19 | + captureCurrentTraceContext, |
| 20 | +} = require('../../../../lib/storage/metadata/captureTraceContext'); |
| 21 | + |
| 22 | +describe('captureCurrentTraceContext', () => { |
| 23 | + beforeEach(() => { |
| 24 | + mockActive.mockReset(); |
| 25 | + mockGetSpan.mockReset(); |
| 26 | + mockInject.mockReset(); |
| 27 | + mockActive.mockReturnValue({ tag: 'mock-active-context' }); |
| 28 | + }); |
| 29 | + |
| 30 | + it('returns undefined when no span is active', () => { |
| 31 | + mockGetSpan.mockReturnValue(undefined); |
| 32 | + assert.strictEqual(captureCurrentTraceContext(), undefined); |
| 33 | + // No injection should be attempted when there is no active span. |
| 34 | + assert.strictEqual(mockInject.mock.calls.length, 0); |
| 35 | + }); |
| 36 | + |
| 37 | + it('returns { traceparent } when active span yields a traceparent', () => { |
| 38 | + mockGetSpan.mockReturnValue({ /* opaque span object */ }); |
| 39 | + mockInject.mockImplementation((ctx, carrier, setter) => { |
| 40 | + setter.set(carrier, 'traceparent', |
| 41 | + '00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01'); |
| 42 | + }); |
| 43 | + |
| 44 | + assert.deepStrictEqual(captureCurrentTraceContext(), { |
| 45 | + traceparent: |
| 46 | + '00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01', |
| 47 | + }); |
| 48 | + |
| 49 | + // Verify inject was given the active context so propagation |
| 50 | + // sees the right state, not a freshly-constructed empty one. |
| 51 | + assert.strictEqual(mockInject.mock.calls.length, 1); |
| 52 | + const [ctxArg, carrierArg] = mockInject.mock.calls[0]; |
| 53 | + assert.deepStrictEqual(ctxArg, { tag: 'mock-active-context' }); |
| 54 | + assert.strictEqual(typeof carrierArg, 'object'); |
| 55 | + }); |
| 56 | + |
| 57 | + it('returns both traceparent and tracestate when both are present', () => { |
| 58 | + mockGetSpan.mockReturnValue({}); |
| 59 | + mockInject.mockImplementation((ctx, carrier, setter) => { |
| 60 | + setter.set(carrier, 'traceparent', |
| 61 | + '00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01'); |
| 62 | + setter.set(carrier, 'tracestate', 'rojo=00f067aa0ba902b7'); |
| 63 | + }); |
| 64 | + |
| 65 | + assert.deepStrictEqual(captureCurrentTraceContext(), { |
| 66 | + traceparent: |
| 67 | + '00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01', |
| 68 | + tracestate: 'rojo=00f067aa0ba902b7', |
| 69 | + }); |
| 70 | + }); |
| 71 | + |
| 72 | + it('returns undefined when propagation injects no traceparent', () => { |
| 73 | + // Defensive case: a misbehaving propagator that exposes only |
| 74 | + // unrelated headers. We must not return a partial / invalid |
| 75 | + // trace context. |
| 76 | + mockGetSpan.mockReturnValue({}); |
| 77 | + mockInject.mockImplementation((ctx, carrier, setter) => { |
| 78 | + setter.set(carrier, 'baggage', 'unrelated=true'); |
| 79 | + }); |
| 80 | + |
| 81 | + assert.strictEqual(captureCurrentTraceContext(), undefined); |
| 82 | + }); |
| 83 | +}); |
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