test_cmp expected actual
'
+test_expect_success 'no commits on one side' '
+ git commit --amend -m "new message" &&
+ git range-diff master HEAD@{1} HEAD
+'
+
test_expect_success 'changed message' '
git range-diff --no-color topic...changed-message >actual &&
sed s/Z/\ /g >expected <<-EOF &&
test_cmp expect actual
'
+for prev in topic master..topic
+do
+ test_expect_success "format-patch --range-diff=$prev" '
+ git format-patch --stdout --cover-letter --range-diff=$prev \
+ master..unmodified >actual &&
+ grep "= 1: .* s/5/A" actual &&
+ grep "= 2: .* s/4/A" actual &&
+ grep "= 3: .* s/11/B" actual &&
+ grep "= 4: .* s/12/B" actual
+ '
+done
+
+test_expect_success 'format-patch --range-diff as commentary' '
+ git format-patch --stdout --range-diff=HEAD~1 HEAD~1 >actual &&
+ test_i18ngrep "^Range-diff:$" actual
+'
+
test_done