[PATCH v3 1/3] t3201: test multiple branch filter combinations

[Aaron Lipman <alipman88@gmail.com>]

Add tests covering the behavior of passing multiple contains/no-contains
filters to git branch, e.g.:

$ git branch --contains feature_a --contains feature_b
$ git branch --no-contains feature_a --no-contains feature_b

When passed more than one contains (or no-contains) filter, the tips of
the branches returned must be reachable from any of the contains commits
and from none of the no-contains commits.

This logic is useful to describe prior to enabling multiple
merged/no-merged filters, so that future tests will demonstrate
consistent behavior between merged/no-merged and contains/no-contains
filters.

Signed-off-by: Aaron Lipman <alipman88@gmail.com>
---
 t/t3201-branch-contains.sh | 44 ++++++++++++++++++++++++++++++++++----
 1 file changed, 40 insertions(+), 4 deletions(-)

diff --git a/t/t3201-branch-contains.sh b/t/t3201-branch-contains.sh
index 40251c9f8f..cd205b5560 100755
--- a/t/t3201-branch-contains.sh
+++ b/t/t3201-branch-contains.sh
@@ -200,15 +200,51 @@ test_expect_success 'branch --merged with --verbose' '
 	test_i18ncmp expect actual
 '
 
-test_expect_success 'branch --contains combined with --no-contains' '
-	git branch --contains zzz --no-contains topic >actual &&
+# The next series of tests covers multiple filter combinations
+test_expect_success 'set up repo for multiple filter combination tests' '
+	git checkout master &&
+	git branch | grep -v master | xargs git branch -D &&
+	git checkout -b feature_a master &&
+	>feature_a &&
+	git add feature_a &&
+	git commit -m "add feature a" &&
+	git checkout -b feature_b master &&
+	>feature_b &&
+	git add feature_b &&
+	git commit -m "add feature b"
+'
+
+test_expect_success 'multiple branch --contains' '
+	git checkout -b next master &&
+	git merge feature_a &&
+	git branch --contains feature_a --contains feature_b >actual &&
+	cat >expect <<-\EOF &&
+	  feature_a
+	  feature_b
+	* next
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'multiple branch --no-contains' '
+	git branch --no-contains feature_a --no-contains feature_b >actual &&
 	cat >expect <<-\EOF &&
 	  master
-	  side
-	  zzz
 	EOF
 	test_cmp expect actual
+'
 
+test_expect_success 'branch --contains combined with --no-contains' '
+	git checkout master &&
+	git merge feature_a &&
+	git checkout next &&
+	git merge feature_b &&
+	git branch --contains feature_a --no-contains feature_b >actual &&
+	cat >expect <<-\EOF &&
+	  feature_a
+	  master
+	EOF
+	test_cmp expect actual
 '
 
 test_done
-- 
2.24.3 (Apple Git-128)