Spence Pope
56 lines
2.2 KiB
TypeScript
56 lines
2.2 KiB
TypeScript
import {
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advanceVideoProgress,
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didSkipVideoCompression,
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videoProgressForPhase,
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videoProgressWithinPhase,
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} from './videoProgress'
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describe('didSkipVideoCompression', () => {
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it('distinguishes a real skip from a failed compression attempt', () => {
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expect(didSkipVideoCompression(undefined)).toBe(false)
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expect(didSkipVideoCompression('below-byte-threshold')).toBe(true)
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expect(didSkipVideoCompression('no-webcodecs')).toBe(true)
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expect(didSkipVideoCompression('gif')).toBe(true)
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expect(didSkipVideoCompression('compress-error-fallback')).toBe(false)
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})
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})
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describe('videoProgressForPhase', () => {
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it('maps each phase onto one continuous timeline', () => {
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expect(videoProgressForPhase('compressing', 0)).toBe(0)
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expect(videoProgressForPhase('compressing', 1)).toBe(0.3)
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expect(videoProgressForPhase('uploading', 0)).toBe(0.3)
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expect(videoProgressForPhase('uploading', 1)).toBe(0.5)
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expect(videoProgressForPhase('uploadingWithoutCompression', 0)).toBe(0)
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expect(videoProgressForPhase('uploadingWithoutCompression', 1)).toBe(0.5)
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expect(videoProgressForPhase('processing', 0)).toBe(0.5)
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expect(videoProgressForPhase('processing', 0.5)).toBe(0.75)
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expect(videoProgressForPhase('processing', 1)).toBe(1)
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})
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it('clamps invalid phase progress', () => {
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expect(videoProgressForPhase('uploading', -1)).toBe(0.3)
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expect(videoProgressForPhase('uploading', 2)).toBe(0.5)
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})
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})
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describe('videoProgressWithinPhase', () => {
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it('maps global progress back to phase-local progress', () => {
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expect(videoProgressWithinPhase('compressing', 0)).toBe(0)
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expect(videoProgressWithinPhase('compressing', 0.15)).toBe(0.5)
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expect(videoProgressWithinPhase('compressing', 0.3)).toBe(1)
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})
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it('clamps progress outside the phase', () => {
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expect(videoProgressWithinPhase('compressing', -1)).toBe(0)
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expect(videoProgressWithinPhase('compressing', 1)).toBe(1)
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})
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})
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describe('advanceVideoProgress', () => {
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it('does not move backwards when a transport retries or falls back', () => {
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const progressed = advanceVideoProgress(0.5, 'uploading', 0.8)
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expect(advanceVideoProgress(progressed, 'uploading', 0)).toBe(progressed)
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})
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})
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