t: avoid "whitelist"

The word "whitelist" has cultural implications that are not inclusive.
Thankfully, it is not difficult to reword and avoid its use.

Focus on changes in the test scripts, since most of the changes are in
comments and test names. The renamed test_allow_var helper is only used
once inside the widely-used test_proto helper.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/lib-proto-disable.sh

@@ -1,7 +1,7 @@
 # Test routines for checking protocol disabling.
 
-# Test clone/fetch/push with GIT_ALLOW_PROTOCOL whitelist
-test_whitelist () {
+# Test clone/fetch/push with GIT_ALLOW_PROTOCOL environment variable
+test_allow_var () {
 	desc=$1
 	proto=$2
 	url=$3
@@ -183,7 +183,7 @@ test_config () {
 #   $2 - machine-readable name of the protocol
 #   $3 - the URL to try cloning
 test_proto () {
-	test_whitelist "$@"
+	test_allow_var "$@"
 
 	test_config "$@"
 }

t/t5812-proto-disable-http.sh

@@ -16,7 +16,7 @@ test_expect_success 'create git-accessible repo' '
 
 test_proto "smart http" http "$HTTPD_URL/smart/repo.git"
 
-test_expect_success 'curl redirects respect whitelist' '
+test_expect_success 'http(s) transport respects GIT_ALLOW_PROTOCOL' '
 	test_must_fail env GIT_ALLOW_PROTOCOL=http:https \
 			   GIT_SMART_HTTP=0 \
 		git clone "$HTTPD_URL/ftp-redir/repo.git" 2>stderr &&

t/t5815-submodule-protos.sh

@@ -1,6 +1,6 @@
 #!/bin/sh
 
-test_description='test protocol whitelisting with submodules'
+test_description='test protocol filtering with submodules'
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-proto-disable.sh
 
@@ -36,7 +36,7 @@ test_expect_success 'update of ext not allowed' '
 	test_must_fail git -C dst submodule update ext-module
 '
 
-test_expect_success 'user can override whitelist' '
+test_expect_success 'user can filter protocols with GIT_ALLOW_PROTOCOL' '
 	GIT_ALLOW_PROTOCOL=ext git -C dst submodule update ext-module
 '
 

t/test-lib-functions.sh

@@ -651,8 +651,7 @@ test_set_prereq () {
 		# test_unset_prereq()
 		!*)
 			;;
-		# (Temporary?) whitelist of things we can't easily
-		# pretend not to support
+		# List of things we can't easily pretend to not support
 		SYMLINKS)
 			;;
 		# Inspecting whether GIT_TEST_FAIL_PREREQS is on