test: test cherry-pick functionality and output separately

Since v1.7.3-rc0~26^2~9 (revert: report success when using option
--strategy, 2010-07-14), the cherry-pick-many-commits test checks the
format of output written to the terminal during a cherry-pick sequence
in addition to the functionality.  There is no reason those have to
be checked in the same test, though, and it has some downsides:

 - when progress output is broken, the test result does not convey
   whether the functionality was also broken or not

 - it is not immediately obvious when reading that these checks are
   meant to prevent regressions in details of the output format and
   are not just a roundabout way to check functional details like the
   number of commits produced

 - there is a temptation to include the same kind of output checking
   for every new cherry-pick test, which would make future changes
   to the output unnecessarily difficult

Put the tests from v1.7.3-rc0~26^2~9 in separate assertions, following
the principle "test one feature at a time".

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3508-cherry-pick-many-commits.sh

@@ -35,6 +35,16 @@ test_expect_success setup '
 '
 
 test_expect_success 'cherry-pick first..fourth works' '
+	git checkout -f master &&
+	git reset --hard first &&
+	test_tick &&
+	git cherry-pick first..fourth &&
+	git diff --quiet other &&
+	git diff --quiet HEAD other &&
+	check_head_differs_from fourth
+'
+
+test_expect_success 'output to keep user entertained during multi-pick' '
 	cat <<-\EOF >expected &&
 	[master OBJID] second
 	 Author: A U Thor <author@example.com>
@@ -51,15 +61,22 @@ test_expect_success 'cherry-pick first..fourth works' '
 	git reset --hard first &&
 	test_tick &&
 	git cherry-pick first..fourth >actual &&
+	sed -e "s/$_x05[0-9a-f][0-9a-f]/OBJID/" <actual >actual.fuzzy &&
+	test_line_count -ge 3 actual.fuzzy &&
+	test_i18ncmp expected actual.fuzzy
+'
+
+test_expect_success 'cherry-pick --strategy resolve first..fourth works' '
+	git checkout -f master &&
+	git reset --hard first &&
+	test_tick &&
+	git cherry-pick --strategy resolve first..fourth &&
 	git diff --quiet other &&
 	git diff --quiet HEAD other &&
-
-	sed -e "s/$_x05[0-9a-f][0-9a-f]/OBJID/" <actual >actual.fuzzy &&
-	test_i18ncmp expected actual.fuzzy &&
 	check_head_differs_from fourth
 '
 
-test_expect_success 'cherry-pick --strategy resolve first..fourth works' '
+test_expect_success 'output during multi-pick indicates merge strategy' '
 	cat <<-\EOF >expected &&
 	Trying simple merge.
 	[master OBJID] second
@@ -79,11 +96,8 @@ test_expect_success 'cherry-pick --strategy resolve first..fourth works' '
 	git reset --hard first &&
 	test_tick &&
 	git cherry-pick --strategy resolve first..fourth >actual &&
-	git diff --quiet other &&
-	git diff --quiet HEAD other &&
 	sed -e "s/$_x05[0-9a-f][0-9a-f]/OBJID/" <actual >actual.fuzzy &&
-	test_i18ncmp expected actual.fuzzy &&
-	check_head_differs_from fourth
+	test_i18ncmp expected actual.fuzzy
 '
 
 test_expect_success 'cherry-pick --ff first..fourth works' '