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9cda77e1b1
We've historically had a problem maintaining the expected invariants on our caches, especially when introducing new caches. This tests documents the invariants and exercises them across most of our existing cache files.
101 lines
2.4 KiB
Raku
101 lines
2.4 KiB
Raku
Enable obsolete markers
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$ cat >> $HGRCPATH << EOF
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> [experimental]
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> evolution=createmarkers
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> [phases]
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> publish=False
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> EOF
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Build a repo with some cacheable bits:
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$ hg init a
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$ cd a
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$ echo a > a
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$ hg ci -qAm0
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$ hg tag t1
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$ hg book -i bk1
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$ hg branch -q b2
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$ hg ci -Am1
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$ hg tag t2
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$ echo dumb > dumb
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$ hg ci -qAmdumb
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$ hg debugobsolete b1174d11b69e63cb0c5726621a43c859f0858d7f
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$ hg phase -pr t1
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$ hg phase -fsr t2
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Make a helper function to check cache damage invariants:
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- command output shouldn't change
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- cache should be present after first use
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- corruption/repair should be silent (no exceptions or warnings)
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- cache should survive deletion, overwrite, and append
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- unreadable / unwriteable caches should be ignored
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- cache should be rebuilt after corruption
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$ damage() {
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> CMD=$1
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> CACHE=.hg/cache/$2
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> CLEAN=$3
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> hg $CMD > before
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> test -f $CACHE || echo "not present"
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> echo bad > $CACHE
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> test -z "$CLEAN" || $CLEAN
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> hg $CMD > after
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> diff -u before after || echo "*** overwrite corruption"
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> echo corruption >> $CACHE
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> test -z "$CLEAN" || $CLEAN
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> hg $CMD > after
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> diff -u before after || echo "*** append corruption"
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> rm $CACHE
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> mkdir $CACHE
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> test -z "$CLEAN" || $CLEAN
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> hg $CMD > after
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> diff -u before after || echo "*** read-only corruption"
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> test -d $CACHE || echo "*** directory clobbered"
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> rmdir $CACHE
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> test -z "$CLEAN" || $CLEAN
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> hg $CMD > after
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> diff -u before after || echo "*** missing corruption"
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> test -f $CACHE || echo "not rebuilt"
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> }
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Beat up tags caches:
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$ damage "tags --hidden" tags2
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$ damage tags tags2-visible
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$ damage "tag -f t3" hgtagsfnodes1
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Beat up hidden cache:
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$ damage log hidden
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Beat up branch caches:
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$ damage branches branch2-base "rm .hg/cache/branch2-[vs]*"
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$ damage branches branch2-served "rm .hg/cache/branch2-[bv]*"
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$ damage branches branch2-visible
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$ damage "log -r branch(.)" rbc-names-v1
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$ damage "log -r branch(default)" rbc-names-v1
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$ damage "log -r branch(b2)" rbc-revs-v1
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We currently can't detect an rbc cache with unknown names:
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$ damage "log -qr branch(b2)" rbc-names-v1
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--- before * (glob)
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+++ after * (glob)
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@@ -1,8 +0,0 @@
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-2:5fb7d38b9dc4
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-3:60b597ffdafa
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-4:b1174d11b69e
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-5:6354685872c0
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-6:5ebc725f1bef
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-7:7b76eec2f273
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-8:ef3428d9d644
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-9:ba7a936bc03c
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*** append corruption
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