Persistent store with Git semantics: lazy reads, delayed writes, content-addressing
irmin/test/cram: add log.t
Exercises [irmin log]: full chain walk, -n N truncation, JSON output,
unknown-branch error. Author/email are pinned by helpers.sh so only
the short hash needs scrubbing. The blank line between commits is
part of the visible UX and is checked as-is.
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test/cram/log.t/run.t
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test/cram/log.t/run.t
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irmin log - walk the commit chain
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[log] walks a branch's commit history through first-parent links,
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most-recent first. Each commit prints as:
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<short-hash> <name> <<email>>
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<message>
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with a blank line between commits. [-n N] caps the chain length.
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[-o json] emits a JSON array of [{hash, author, email, message}]
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objects.
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helpers.sh pins GIT_AUTHOR_* / GIT_COMMITTER_* so author/email are
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stable. Short hashes remain volatile; scrub them in the test.
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Set up a repo with three commits:
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$ mkdir testrepo
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$ cd testrepo
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$ irmin init . 2>&1 > /dev/null
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$ irmin set a.txt 'A' -m 'c1' 2>&1 > /dev/null
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$ irmin set b.txt 'B' -m 'c2' 2>&1 > /dev/null
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$ irmin set c.txt 'C' -m 'c3' 2>&1 > /dev/null
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Full log (most-recent first). Scrub the leading short hash to HASH:
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$ irmin log | sed -E 's/^[0-9a-f]{7} /HASH /'
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HASH irmin <irmin@local>
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c3
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HASH irmin <irmin@local>
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c2
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HASH irmin <irmin@local>
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c1
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[-n 1] caps at the most recent commit:
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$ irmin log -n 1 | sed -E 's/^[0-9a-f]{7} /HASH /'
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HASH irmin <irmin@local>
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c3
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JSON output: one array element per commit, full-length hashes scrubbed:
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$ irmin log -o json -n 2 | sed -E 's/"hash":"[0-9a-f]+"/"hash":"HASH"/g'
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[{"hash":"HASH","author":"irmin","email":"irmin@local","message":"c3"},{"hash":"HASH","author":"irmin","email":"irmin@local","message":"c2"}]
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Unknown branch: error and non-zero exit.
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$ irmin log -b missing
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✗ Branch missing not found
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[1]