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test: pin the reviewer's exact cyclic-alias example

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`&a [1, *a]` puts the self-reference after a plain value, so a guard that
only inspected the head of a sequence would miss it. Already caught; this
records that it is.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ND46Ci64DC3tzBy9aG81Nc
Signed-off-by: cliffhall <cliff@futurescale.com>
This commit is contained in:
cliffhall 2026-09-07 20:19:30 -04:00
commit e5f2fdbb4f
1 changed files with 8 additions and 0 deletions
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8
clients/web/src/test/core/mcp/skillFile.test.ts
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@ -147,6 +147,14 @@ describe("parseSkillFrontmatter (#2248)", () => {
expect(parsed).toEqual({ error: expect.stringContaining("cyclic") });
});
it("rejects a cycle that is not the first element", () => {
// `&a [1, *a]` — the self-reference sits after a plain value, so a guard
// that only inspected the head of a sequence would miss it.
expect(parseSkillFrontmatter("a: &a [1, *a]")).toEqual({
error: expect.stringContaining("cyclic"),
});
});
it("rejects a cycle through a mapping, not only an array", () => {
expect(parseSkillFrontmatter("a: &a\n self: *a")).toEqual({
error: expect.stringContaining("cyclic"),