[PATCH v3 1/5] t4001: add a test comparing basename similarity and content similarity
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STALE2068d
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From: Elijah Newren via GitGitGadget <hidden>
Date: 2021-02-10 15:16:48
Subsystem:
the rest · Maintainer:
Linus Torvalds
Revision v3 of 5 in this series.
Revisions (5)
From: Elijah Newren <redacted> Add a simple test where a removed file is similar to two different added files; one of them has the same basename, and the other has a slightly higher content similarity. Without break detection, filename similarity of 100% trumps content similarity for pairing up related files. For any filename similarity less than 100%, the opposite is true -- content similarity is all that matters. Add a testcase that documents this. Subsequent commits will add a new rule that includes an inbetween state, where a mixture of filename similarity and content similarity are weighed, and which will change the outcome of this testcase. Signed-off-by: Elijah Newren <redacted> --- t/t4001-diff-rename.sh | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/t/t4001-diff-rename.sh b/t/t4001-diff-rename.sh
index c16486a9d41a..797343b38106 100755
--- a/t/t4001-diff-rename.sh
+++ b/t/t4001-diff-rename.sh@@ -262,4 +262,28 @@ test_expect_success 'diff-tree -l0 defaults to a big rename limit, not zero' ' grep "myotherfile.*myfile" actual ' +test_expect_success 'basename similarity vs best similarity' ' + mkdir subdir && + test_write_lines line1 line2 line3 line4 line5 \ + line6 line7 line8 line9 line10 >subdir/file.txt && + git add subdir/file.txt && + git commit -m "base txt" && + + git rm subdir/file.txt && + test_write_lines line1 line2 line3 line4 line5 \ + line6 line7 line8 >file.txt && + test_write_lines line1 line2 line3 line4 line5 \ + line6 line7 line8 line9 >file.md && + git add file.txt file.md && + git commit -a -m "rename" && + git diff-tree -r -M --name-status HEAD^ HEAD >actual && + # subdir/file.txt is 89% similar to file.md, 78% similar to file.txt, + # but since same basenames are checked first... + cat >expected <<-\EOF && + R088 subdir/file.txt file.md + A file.txt + EOF + test_cmp expected actual +' + test_done
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