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| 1 | +/** |
| 2 | + * @vitest-environment node |
| 3 | + */ |
| 4 | +import { describe, expect, it } from 'vitest' |
| 5 | +import { |
| 6 | + buildNextCallChain, |
| 7 | + MAX_CALL_CHAIN_DEPTH, |
| 8 | + parseCallChain, |
| 9 | + SIM_VIA_HEADER, |
| 10 | + serializeCallChain, |
| 11 | + validateCallChain, |
| 12 | +} from '@/lib/execution/call-chain' |
| 13 | + |
| 14 | +describe('call-chain', () => { |
| 15 | + describe('SIM_VIA_HEADER', () => { |
| 16 | + it('has the expected header name', () => { |
| 17 | + expect(SIM_VIA_HEADER).toBe('X-Sim-Via') |
| 18 | + }) |
| 19 | + }) |
| 20 | + |
| 21 | + describe('MAX_CALL_CHAIN_DEPTH', () => { |
| 22 | + it('equals 10', () => { |
| 23 | + expect(MAX_CALL_CHAIN_DEPTH).toBe(10) |
| 24 | + }) |
| 25 | + }) |
| 26 | + |
| 27 | + describe('parseCallChain', () => { |
| 28 | + it('returns empty array for null', () => { |
| 29 | + expect(parseCallChain(null)).toEqual([]) |
| 30 | + }) |
| 31 | + |
| 32 | + it('returns empty array for undefined', () => { |
| 33 | + expect(parseCallChain(undefined)).toEqual([]) |
| 34 | + }) |
| 35 | + |
| 36 | + it('returns empty array for empty string', () => { |
| 37 | + expect(parseCallChain('')).toEqual([]) |
| 38 | + }) |
| 39 | + |
| 40 | + it('returns empty array for whitespace-only string', () => { |
| 41 | + expect(parseCallChain(' ')).toEqual([]) |
| 42 | + }) |
| 43 | + |
| 44 | + it('parses a single workflow ID', () => { |
| 45 | + expect(parseCallChain('wf-abc')).toEqual(['wf-abc']) |
| 46 | + }) |
| 47 | + |
| 48 | + it('parses multiple comma-separated workflow IDs', () => { |
| 49 | + expect(parseCallChain('wf-a,wf-b,wf-c')).toEqual(['wf-a', 'wf-b', 'wf-c']) |
| 50 | + }) |
| 51 | + |
| 52 | + it('trims whitespace around workflow IDs', () => { |
| 53 | + expect(parseCallChain(' wf-a , wf-b , wf-c ')).toEqual(['wf-a', 'wf-b', 'wf-c']) |
| 54 | + }) |
| 55 | + |
| 56 | + it('filters out empty segments', () => { |
| 57 | + expect(parseCallChain('wf-a,,wf-b')).toEqual(['wf-a', 'wf-b']) |
| 58 | + }) |
| 59 | + }) |
| 60 | + |
| 61 | + describe('serializeCallChain', () => { |
| 62 | + it('serializes an empty array', () => { |
| 63 | + expect(serializeCallChain([])).toBe('') |
| 64 | + }) |
| 65 | + |
| 66 | + it('serializes a single ID', () => { |
| 67 | + expect(serializeCallChain(['wf-a'])).toBe('wf-a') |
| 68 | + }) |
| 69 | + |
| 70 | + it('serializes multiple IDs with commas', () => { |
| 71 | + expect(serializeCallChain(['wf-a', 'wf-b', 'wf-c'])).toBe('wf-a,wf-b,wf-c') |
| 72 | + }) |
| 73 | + }) |
| 74 | + |
| 75 | + describe('validateCallChain', () => { |
| 76 | + it('returns null for an empty chain', () => { |
| 77 | + expect(validateCallChain([])).toBeNull() |
| 78 | + }) |
| 79 | + |
| 80 | + it('returns null when chain is under max depth', () => { |
| 81 | + expect(validateCallChain(['wf-a', 'wf-b'])).toBeNull() |
| 82 | + }) |
| 83 | + |
| 84 | + it('allows legitimate self-recursion', () => { |
| 85 | + expect(validateCallChain(['wf-a', 'wf-a', 'wf-a'])).toBeNull() |
| 86 | + }) |
| 87 | + |
| 88 | + it('returns depth error when chain is at max depth', () => { |
| 89 | + const chain = Array.from({ length: MAX_CALL_CHAIN_DEPTH }, (_, i) => `wf-${i}`) |
| 90 | + const error = validateCallChain(chain) |
| 91 | + expect(error).toContain( |
| 92 | + `Maximum workflow call chain depth (${MAX_CALL_CHAIN_DEPTH}) exceeded` |
| 93 | + ) |
| 94 | + }) |
| 95 | + |
| 96 | + it('allows chain just under max depth', () => { |
| 97 | + const chain = Array.from({ length: MAX_CALL_CHAIN_DEPTH - 1 }, (_, i) => `wf-${i}`) |
| 98 | + expect(validateCallChain(chain)).toBeNull() |
| 99 | + }) |
| 100 | + }) |
| 101 | + |
| 102 | + describe('buildNextCallChain', () => { |
| 103 | + it('appends workflow ID to empty chain', () => { |
| 104 | + expect(buildNextCallChain([], 'wf-a')).toEqual(['wf-a']) |
| 105 | + }) |
| 106 | + |
| 107 | + it('appends workflow ID to existing chain', () => { |
| 108 | + expect(buildNextCallChain(['wf-a', 'wf-b'], 'wf-c')).toEqual(['wf-a', 'wf-b', 'wf-c']) |
| 109 | + }) |
| 110 | + |
| 111 | + it('does not mutate the original chain', () => { |
| 112 | + const original = ['wf-a'] |
| 113 | + const result = buildNextCallChain(original, 'wf-b') |
| 114 | + expect(original).toEqual(['wf-a']) |
| 115 | + expect(result).toEqual(['wf-a', 'wf-b']) |
| 116 | + }) |
| 117 | + }) |
| 118 | + |
| 119 | + describe('round-trip', () => { |
| 120 | + it('parse → serialize is identity', () => { |
| 121 | + const header = 'wf-a,wf-b,wf-c' |
| 122 | + expect(serializeCallChain(parseCallChain(header))).toBe(header) |
| 123 | + }) |
| 124 | + |
| 125 | + it('serialize → parse is identity', () => { |
| 126 | + const chain = ['wf-a', 'wf-b', 'wf-c'] |
| 127 | + expect(parseCallChain(serializeCallChain(chain))).toEqual(chain) |
| 128 | + }) |
| 129 | + }) |
| 130 | +}) |
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