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-rwxr-xr-xt/t4013-diff-various.sh31
1 files changed, 31 insertions, 0 deletions
diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 6cca8b84a6..87def81699 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -452,6 +452,37 @@ diff-tree --stat --compact-summary initial mode
diff-tree -R --stat --compact-summary initial mode
EOF
+test_expect_success 'log --diff-merges=on matches --diff-merges=separate' '
+ git log -p --diff-merges=separate master >result &&
+ process_diffs result >expected &&
+ git log -p --diff-merges=on master >result &&
+ process_diffs result >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'deny wrong log.diffMerges config' '
+ test_config log.diffMerges wrong-value &&
+ test_expect_code 128 git log
+'
+
+test_expect_success 'git config log.diffMerges first-parent' '
+ git log -p --diff-merges=first-parent master >result &&
+ process_diffs result >expected &&
+ test_config log.diffMerges first-parent &&
+ git log -p --diff-merges=on master >result &&
+ process_diffs result >actual &&
+ test_cmp expected actual
+'
+
+test_expect_success 'git config log.diffMerges first-parent vs -m' '
+ git log -p --diff-merges=first-parent master >result &&
+ process_diffs result >expected &&
+ test_config log.diffMerges first-parent &&
+ git log -p -m master >result &&
+ process_diffs result >actual &&
+ test_cmp expected actual
+'
+
test_expect_success 'log -S requires an argument' '
test_must_fail git log -S
'