[PATCH] tests: introduce test_unset_prereq, for debugging

From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Apr 28, 2018, 22:33 UTC
Message-ID: <b94af009c1bc9c9b96d977b1c5775ff73669138f.1524954814.git.johannes.schindelin@gmx.de>

While working on the --convert-graft-file test, I missed that I was relying on the GPG prereq, by using output of test cases that were only run under that prereq.

For debugging, it was really convenient to force that prereq to be unmet, but there was no easy way to do that. So I came up with a way, and this patch reflects the cleaned-up version of that way.

For convenience, the following two methods are now supported ways to pretend that a prereq is not met:

	test_set_prereq !GPG

and

	test_unset_prereq GPG

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
Published-As: https://github.com/dscho/git/releases/tag/test-unset-prereq-v1
Fetch-It-Via: git fetch https://github.com/dscho/git test-unset-prereq-v1
 t/test-lib-functions.sh | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index 7d620bf2a9a..76cd6630f29 100644
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -278,8 +278,20 @@ write_script () {
 # The single parameter is the prerequisite tag (a simple word, in all
 # capital letters by convention).
 
+test_unset_prereq () {
+	! test_have_prereq "$1" ||
+	satisfied_prereq="${satisfied_prereq% $1 *} ${satisfied_prereq#* $1 }"
+}
+
 test_set_prereq () {
-	satisfied_prereq="$satisfied_prereq$1 "
+	case "$1" in
+	!*)
+		test_unset_prereq "${1#!}"
+		;;
+	*)
+		satisfied_prereq="$satisfied_prereq$1 "
+		;;
+	esac
 }
 satisfied_prereq=" "
 lazily_testable_prereq= lazily_tested_prereq=

base-commit: 1f1cddd558b54bb0ce19c8ace353fd07b758510d

-- 
2.17.0.windows.1.36.gdf4ca5fb72a