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-rwxr-xr-xt/t6004-rev-list-path-optim.sh51
1 files changed, 51 insertions, 0 deletions
diff --git a/t/t6004-rev-list-path-optim.sh b/t/t6004-rev-list-path-optim.sh
new file mode 100755
index 0000000000..761f09b1e5
--- /dev/null
+++ b/t/t6004-rev-list-path-optim.sh
@@ -0,0 +1,51 @@
+#!/bin/sh
+
+test_description='git-rev-list trivial path optimization test'
+
+. ./test-lib.sh
+
+test_expect_success setup '
+echo Hello > a &&
+git add a &&
+git commit -m "Initial commit" a &&
+initial=$(git rev-parse --verify HEAD)
+'
+
+test_expect_success path-optimization '
+ commit=$(echo "Unchanged tree" | git-commit-tree "HEAD^{tree}" -p HEAD) &&
+ test $(git-rev-list $commit | wc -l) = 2 &&
+ test $(git-rev-list $commit -- . | wc -l) = 1
+'
+
+test_expect_success 'further setup' '
+ git checkout -b side &&
+ echo Irrelevant >c &&
+ git add c &&
+ git commit -m "Side makes an irrelevant commit" &&
+ echo "More Irrelevancy" >c &&
+ git add c &&
+ git commit -m "Side makes another irrelevant commit" &&
+ echo Bye >a &&
+ git add a &&
+ git commit -m "Side touches a" &&
+ side=$(git rev-parse --verify HEAD) &&
+ echo "Yet more Irrelevancy" >c &&
+ git add c &&
+ git commit -m "Side makes yet another irrelevant commit" &&
+ git checkout master &&
+ echo Another >b &&
+ git add b &&
+ git commit -m "Master touches b" &&
+ git merge side &&
+ echo Touched >b &&
+ git add b &&
+ git commit -m "Master touches b again"
+'
+
+test_expect_success 'path optimization 2' '
+ ( echo "$side"; echo "$initial" ) >expected &&
+ git rev-list HEAD -- a >actual &&
+ diff -u expected actual
+'
+
+test_done