t0000: cover GIT_SKIP_TESTS blindspots

Currently, the tests for GIT_SKIP_TESTS do not cover the situation where
we skip an entire test suite. The tests also do not cover the situation
where we have GIT_SKIP_TESTS defined but the test suite does not match.

Add two test cases so we cover this blindspot.

Signed-off-by: Denton Liu <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: Denton-L

t/t0000-basic.sh

@@ -391,6 +391,44 @@ test_expect_success 'GIT_SKIP_TESTS sh pattern' "
 	)
 "
 
+test_expect_success 'GIT_SKIP_TESTS entire suite' "
+	(
+		GIT_SKIP_TESTS='git' && export GIT_SKIP_TESTS &&
+		run_sub_test_lib_test git-skip-tests-entire-suite \
+			'GIT_SKIP_TESTS entire suite' <<-\\EOF &&
+		for i in 1 2 3
+		do
+			test_expect_success \"passing test #\$i\" 'true'
+		done
+		test_done
+		EOF
+		check_sub_test_lib_test git-skip-tests-entire-suite <<-\\EOF
+		> 1..0 # SKIP skip all tests in git
+		EOF
+	)
+"
+
+test_expect_success 'GIT_SKIP_TESTS does not skip unmatched suite' "
+	(
+		GIT_SKIP_TESTS='notgit' && export GIT_SKIP_TESTS &&
+		run_sub_test_lib_test git-skip-tests-unmatched-suite \
+			'GIT_SKIP_TESTS does not skip unmatched suite' <<-\\EOF &&
+		for i in 1 2 3
+		do
+			test_expect_success \"passing test #\$i\" 'true'
+		done
+		test_done
+		EOF
+		check_sub_test_lib_test git-skip-tests-unmatched-suite <<-\\EOF
+		> ok 1 - passing test #1
+		> ok 2 - passing test #2
+		> ok 3 - passing test #3
+		> # passed all 3 test(s)
+		> 1..3
+		EOF
+	)
+"
+
 test_expect_success '--run basic' "
 	run_sub_test_lib_test run-basic \
 		'--run basic' --run='1 3 5' <<-\\EOF &&