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-rwxr-xr-xt/t8013-blame-ignore-revs.sh291
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diff --git a/t/t8013-blame-ignore-revs.sh b/t/t8013-blame-ignore-revs.sh
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+#!/bin/sh
+
+test_description='ignore revisions when blaming'
+. ./test-lib.sh
+
+# Creates:
+# A--B--X
+# A added line 1 and B added line 2. X makes changes to those lines. Sanity
+# check that X is blamed for both lines.
+test_expect_success setup '
+ test_commit A file line1 &&
+
+ echo line2 >>file &&
+ git add file &&
+ test_tick &&
+ git commit -m B &&
+ git tag B &&
+
+ test_write_lines line-one line-two >file &&
+ git add file &&
+ test_tick &&
+ git commit -m X &&
+ git tag X &&
+ git tag -a -m "X (annotated)" XT &&
+
+ git blame --line-porcelain file >blame_raw &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 1" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse X >expect &&
+ test_cmp expect actual &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 2" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse X >expect &&
+ test_cmp expect actual
+'
+
+# Ensure bogus --ignore-rev requests are caught
+test_expect_success 'validate --ignore-rev' '
+ test_must_fail git blame --ignore-rev X^{tree} file
+'
+
+# Ensure bogus --ignore-revs-file requests are silently accepted
+test_expect_success 'validate --ignore-revs-file' '
+ git rev-parse X^{tree} >ignore_x &&
+ git blame --ignore-revs-file ignore_x file
+'
+
+for I in X XT
+do
+ # Ignore X (or XT), make sure A is blamed for line 1 and B for line 2.
+ # Giving X (i.e. commit) and XT (i.e. annotated tag to commit) should
+ # produce the same result.
+ test_expect_success "ignore_rev_changing_lines ($I)" '
+ git blame --line-porcelain --ignore-rev $I file >blame_raw &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 1" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse A >expect &&
+ test_cmp expect actual &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 2" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse B >expect &&
+ test_cmp expect actual
+ '
+done
+
+# For ignored revs that have added 'unblamable' lines, attribute those to the
+# ignored commit.
+# A--B--X--Y
+# Where Y changes lines 1 and 2, and adds lines 3 and 4. The added lines ought
+# to have nothing in common with "line-one" or "line-two", to keep any
+# heuristics from matching them with any lines in the parent.
+test_expect_success ignore_rev_adding_unblamable_lines '
+ test_write_lines line-one-change line-two-changed y3 y4 >file &&
+ git add file &&
+ test_tick &&
+ git commit -m Y &&
+ git tag Y &&
+
+ git rev-parse Y >expect &&
+ git blame --line-porcelain file --ignore-rev Y >blame_raw &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 3" blame_raw | sed -e "s/ .*//" >actual &&
+ test_cmp expect actual &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 4" blame_raw | sed -e "s/ .*//" >actual &&
+ test_cmp expect actual
+'
+
+# Ignore X and Y, both in separate files. Lines 1 == A, 2 == B.
+test_expect_success ignore_revs_from_files '
+ git rev-parse X >ignore_x &&
+ git rev-parse Y >ignore_y &&
+ git blame --line-porcelain file --ignore-revs-file ignore_x --ignore-revs-file ignore_y >blame_raw &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 1" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse A >expect &&
+ test_cmp expect actual &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 2" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse B >expect &&
+ test_cmp expect actual
+'
+
+# Ignore X from the config option, Y from a file.
+test_expect_success ignore_revs_from_configs_and_files '
+ git config --add blame.ignoreRevsFile ignore_x &&
+ git blame --line-porcelain file --ignore-revs-file ignore_y >blame_raw &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 1" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse A >expect &&
+ test_cmp expect actual &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 2" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse B >expect &&
+ test_cmp expect actual
+'
+
+# Override blame.ignoreRevsFile (ignore_x) with an empty string. X should be
+# blamed now for lines 1 and 2, since we are no longer ignoring X.
+test_expect_success override_ignore_revs_file '
+ git blame --line-porcelain file --ignore-revs-file "" --ignore-revs-file ignore_y >blame_raw &&
+ git rev-parse X >expect &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 1" blame_raw | sed -e "s/ .*//" >actual &&
+ test_cmp expect actual &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 2" blame_raw | sed -e "s/ .*//" >actual &&
+ test_cmp expect actual
+ '
+test_expect_success bad_files_and_revs '
+ test_must_fail git blame file --ignore-rev NOREV 2>err &&
+ test_i18ngrep "cannot find revision NOREV to ignore" err &&
+
+ test_must_fail git blame file --ignore-revs-file NOFILE 2>err &&
+ test_i18ngrep "could not open.*: NOFILE" err &&
+
+ echo NOREV >ignore_norev &&
+ test_must_fail git blame file --ignore-revs-file ignore_norev 2>err &&
+ test_i18ngrep "invalid object name: NOREV" err
+'
+
+# For ignored revs that have added 'unblamable' lines, mark those lines with a
+# '*'
+# A--B--X--Y
+# Lines 3 and 4 are from Y and unblamable. This was set up in
+# ignore_rev_adding_unblamable_lines.
+test_expect_success mark_unblamable_lines '
+ git config --add blame.markUnblamableLines true &&
+
+ git blame --ignore-rev Y file >blame_raw &&
+ echo "*" >expect &&
+
+ sed -n "3p" blame_raw | cut -c1 >actual &&
+ test_cmp expect actual &&
+
+ sed -n "4p" blame_raw | cut -c1 >actual &&
+ test_cmp expect actual
+'
+
+# Commit Z will touch the first two lines. Y touched all four.
+# A--B--X--Y--Z
+# The blame output when ignoring Z should be:
+# ?Y ... 1)
+# ?Y ... 2)
+# Y ... 3)
+# Y ... 4)
+# We're checking only the first character
+test_expect_success mark_ignored_lines '
+ git config --add blame.markIgnoredLines true &&
+
+ test_write_lines line-one-Z line-two-Z y3 y4 >file &&
+ git add file &&
+ test_tick &&
+ git commit -m Z &&
+ git tag Z &&
+
+ git blame --ignore-rev Z file >blame_raw &&
+ echo "?" >expect &&
+
+ sed -n "1p" blame_raw | cut -c1 >actual &&
+ test_cmp expect actual &&
+
+ sed -n "2p" blame_raw | cut -c1 >actual &&
+ test_cmp expect actual &&
+
+ sed -n "3p" blame_raw | cut -c1 >actual &&
+ ! test_cmp expect actual &&
+
+ sed -n "4p" blame_raw | cut -c1 >actual &&
+ ! test_cmp expect actual
+'
+
+# For ignored revs that added 'unblamable' lines and more recent commits changed
+# the blamable lines, mark the unblamable lines with a
+# '*'
+# A--B--X--Y--Z
+# Lines 3 and 4 are from Y and unblamable, as set up in
+# ignore_rev_adding_unblamable_lines. Z changed lines 1 and 2.
+test_expect_success mark_unblamable_lines_intermediate '
+ git config --add blame.markUnblamableLines true &&
+
+ git blame --ignore-rev Y file >blame_raw 2>stderr &&
+ echo "*" >expect &&
+
+ sed -n "3p" blame_raw | cut -c1 >actual &&
+ test_cmp expect actual &&
+
+ sed -n "4p" blame_raw | cut -c1 >actual &&
+ test_cmp expect actual
+'
+
+# The heuristic called by guess_line_blames() tries to find the size of a
+# blame_entry 'e' in the parent's address space. Those calculations need to
+# check for negative or zero values for when a blame entry is completely outside
+# the window of the parent's version of a file.
+#
+# This happens when one commit adds several lines (commit B below). A later
+# commit (C) changes one line in the middle of B's change. Commit C gets blamed
+# for its change, and that breaks up B's change into multiple blame entries.
+# When processing B, one of the blame_entries is outside A's window (which was
+# zero - it had no lines added on its side of the diff).
+#
+# A--B--C, ignore B to test the ignore heuristic's boundary checks.
+test_expect_success ignored_chunk_negative_parent_size '
+ rm -rf .git/ &&
+ git init &&
+
+ test_write_lines L1 L2 L7 L8 L9 >file &&
+ git add file &&
+ test_tick &&
+ git commit -m A &&
+ git tag A &&
+
+ test_write_lines L1 L2 L3 L4 L5 L6 L7 L8 L9 >file &&
+ git add file &&
+ test_tick &&
+ git commit -m B &&
+ git tag B &&
+
+ test_write_lines L1 L2 L3 L4 xxx L6 L7 L8 L9 >file &&
+ git add file &&
+ test_tick &&
+ git commit -m C &&
+ git tag C &&
+
+ git blame file --ignore-rev B >blame_raw
+'
+
+# Resetting the repo and creating:
+#
+# A--B--M
+# \ /
+# C-+
+#
+# 'A' creates a file. B changes line 1, and C changes line 9. M merges.
+test_expect_success ignore_merge '
+ rm -rf .git/ &&
+ git init &&
+
+ test_write_lines L1 L2 L3 L4 L5 L6 L7 L8 L9 >file &&
+ git add file &&
+ test_tick &&
+ git commit -m A &&
+ git tag A &&
+
+ test_write_lines BB L2 L3 L4 L5 L6 L7 L8 L9 >file &&
+ git add file &&
+ test_tick &&
+ git commit -m B &&
+ git tag B &&
+
+ git reset --hard A &&
+ test_write_lines L1 L2 L3 L4 L5 L6 L7 L8 CC >file &&
+ git add file &&
+ test_tick &&
+ git commit -m C &&
+ git tag C &&
+
+ test_merge M B &&
+ git blame --line-porcelain file --ignore-rev M >blame_raw &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 1" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse B >expect &&
+ test_cmp expect actual &&
+
+ grep -E "^[0-9a-f]+ [0-9]+ 9" blame_raw | sed -e "s/ .*//" >actual &&
+ git rev-parse C >expect &&
+ test_cmp expect actual
+'
+
+test_done