chore: import upstream snapshot with attribution

apps/sim/lib/workflows/sanitization/references.test.ts

@@ -0,0 +1,55 @@
+import { describe, expect, it } from 'vitest'
+import {
+  isLikelyReferenceSegment,
+  splitReferenceSegment,
+} from '@/lib/workflows/sanitization/references'
+
+describe('splitReferenceSegment', () => {
+  it('should return leading and reference for simple segments', () => {
+    const result = splitReferenceSegment('<block.output>')
+    expect(result).toEqual({
+      leading: '',
+      reference: '<block.output>',
+    })
+  })
+
+  it('should separate comparator prefixes from reference', () => {
+    const result = splitReferenceSegment('< <block2.output>')
+    expect(result).toEqual({
+      leading: '< ',
+      reference: '<block2.output>',
+    })
+  })
+
+  it('should handle <= comparator prefixes', () => {
+    const result = splitReferenceSegment('<= <block2.output>')
+    expect(result).toEqual({
+      leading: '<= ',
+      reference: '<block2.output>',
+    })
+  })
+})
+
+describe('isLikelyReferenceSegment', () => {
+  it('should return true for regular references', () => {
+    expect(isLikelyReferenceSegment('<block.output>')).toBe(true)
+  })
+
+  it('should return true for references after comparator', () => {
+    expect(isLikelyReferenceSegment('< <block2.output>')).toBe(true)
+    expect(isLikelyReferenceSegment('<= <block2.output>')).toBe(true)
+  })
+
+  it('should return false when leading content is not comparator characters', () => {
+    expect(isLikelyReferenceSegment('<foo<bar>')).toBe(false)
+  })
+
+  it('should return true for references starting with a digit', () => {
+    expect(isLikelyReferenceSegment('<1password1>')).toBe(true)
+    expect(isLikelyReferenceSegment('<1password1.secret>')).toBe(true)
+  })
+
+  it('should return false for purely numeric references', () => {
+    expect(isLikelyReferenceSegment('<123>')).toBe(false)
+  })
+})