[PATCH v3 2/2] tests: add tests for grep --max-count

["Carlos López via GitGitGadget" <gitgitgadget@gmail.com>]

From: =?UTF-8?q?Carlos=20L=C3=B3pez?= <00xc@protonmail.com>

Add tests for grep's -m / --max-count to check if the option correctly
outputs limited results, and that it interacts properly with other flags
that could likely be used in conjunction.

Signed-off-by: Carlos López 00xc@protonmail.com
---
 t/t7810-grep.sh | 83 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)

diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh
index 69356011713..7b1b8a3cd93 100755
--- a/t/t7810-grep.sh
+++ b/t/t7810-grep.sh
@@ -77,6 +77,7 @@ test_expect_success setup '
 	# Say hello.
 	function hello() {
 	  echo "Hello world."
+	  echo "Hello again."
 	} # hello
 
 	# Still a no-op.
@@ -595,6 +596,88 @@ test_expect_success 'grep --files-without-match --quiet' '
 	test_must_be_empty actual
 '
 
+cat >expected <<EOF &&
+EOF
+
+test_expect_success 'grep --max-count 0 (must exit with non-zero)' '
+	test_must_fail git grep --max-count 0 foo >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<EOF &&
+file:foo mmap bar
+EOF
+
+test_expect_success 'grep --max-count 1' '
+	git grep --max-count 1 foo >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<EOF &&
+file:foo mmap bar
+file:foo_mmap bar
+file:foo_mmap bar mmap
+EOF
+
+test_expect_success 'grep --max-count 3' '
+	git grep --max-count 3 foo >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<EOF &&
+file:foo mmap bar
+file:foo_mmap bar
+file:foo_mmap bar mmap
+file:foo mmap bar_mmap
+file:foo_mmap bar mmap baz
+EOF
+
+test_expect_success 'grep --max-count -1 (no limit)' '
+	git grep --max-count -1 foo >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<EOF &&
+file-foo mmap bar
+file:foo_mmap bar
+file-foo_mmap bar mmap
+EOF
+
+test_expect_success 'grep --max-count 1 --context 2' '
+	git grep --max-count 1 --context 1 foo_mmap >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<EOF &&
+hello.ps1=function hello() {
+hello.ps1:  echo "Hello world."
+EOF
+
+test_expect_success 'grep --max-count 1 --show-function' '
+	git grep --max-count 1 --show-function Hello hello.ps1 >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<EOF &&
+hello.ps1=function hello() {
+hello.ps1:  echo "Hello world."
+hello.ps1:  echo "Hello again."
+EOF
+
+test_expect_success 'grep --max-count 2 --show-function' '
+	git grep --max-count 2 --show-function Hello hello.ps1 >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<EOF &&
+hello.ps1:1
+EOF
+
+test_expect_success 'grep --max-count 1 -c' '
+	git grep --max-count 1 --count Hello hello.ps1 >actual &&
+	test_cmp expected actual
+'
+
 cat >expected <<EOF
 file:foo mmap bar_mmap
 EOF
-- 
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