[PATCH 01/13] t0001: fix gaps in "TEMPLATE DIRECTORY" coverage

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Add tests to assert that the priority order described in the "TEMPLATE
DIRECTORY" section in the "init" documentation is correct.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 t/t0001-init.sh | 85 +++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 82 insertions(+), 3 deletions(-)

diff --git a/t/t0001-init.sh b/t/t0001-init.sh
index 7603ad2f82b..e0b965cdc8f 100755
--- a/t/t0001-init.sh
+++ b/t/t0001-init.sh
@@ -173,6 +173,55 @@ test_expect_success 'reinit' '
 	test_must_be_empty again/err2
 '
 
+setup_template_priority() {
+	test_when_finished "rm -rf template" &&
+	mkdir template &&
+	touch template/file &&
+
+	test_when_finished "rm -rf template2" &&
+	mkdir template2 &&
+	touch template2/file2 &&
+
+	# Created by the caller
+	test_when_finished "rm -rf repo"
+}
+
+test_expect_success 'usage priority: --template only' '
+	setup_template_priority &&
+	git init --template=template repo &&
+	test_path_is_file repo/.git/file
+'
+
+test_expect_success 'usage priority: --template takes precedence over GIT_TEMPLATE_DIR' '
+	setup_template_priority &&
+	GIT_TEMPLATE_DIR="$PWD/template2" git init --template=template repo &&
+	test_path_is_file repo/.git/file
+'
+
+test_expect_success 'usage priority: --template takes precedence over init.templateDir' '
+	setup_template_priority &&
+	git -c init.templateDir="$PWD/template2" init --template=template repo &&
+	test_path_is_file repo/.git/file
+'
+
+test_expect_success 'usage priority: --no-template takes precedence over init.templateDir' '
+	setup_template_priority &&
+	git -c init.templateDir="$PWD/template" init --no-template repo &&
+	test_path_is_missing repo/.git/file
+'
+
+test_expect_success 'usage priority: --no-template takes precedence over GIT_TEMPLATE_DIR' '
+	setup_template_priority &&
+	GIT_TEMPLATE_DIR="$PWD/template" git init --no-template repo &&
+	test_path_is_missing repo/.git/file
+'
+
+test_expect_success 'usage priority: GIT_NO_TEMPLATE_DIR=true takes precedence over GIT_TEMPLATE_DIR' '
+	setup_template_priority &&
+	GIT_TEMPLATE_DIR="$PWD/template" GIT_NO_TEMPLATE_DIR=true git init repo &&
+	test_path_is_missing repo/.git/file
+'
+
 test_expect_success 'init with --template' '
 	mkdir template-source &&
 	echo content >template-source/file &&
@@ -187,11 +236,15 @@ test_expect_success 'init with --template (blank)' '
 	test_path_is_missing template-blank/.git/info/exclude
 '
 
+no_templatedir_env () {
+	sane_unset GIT_TEMPLATE_DIR &&
+	NO_SET_GIT_TEMPLATE_DIR=t &&
+	export NO_SET_GIT_TEMPLATE_DIR
+}
+
 init_no_templatedir_env () {
 	(
-		sane_unset GIT_TEMPLATE_DIR &&
-		NO_SET_GIT_TEMPLATE_DIR=t &&
-		export NO_SET_GIT_TEMPLATE_DIR &&
+		no_templatedir_env &&
 		git init "$1"
 	)
 }
@@ -214,6 +267,32 @@ test_expect_success 'init with init.templatedir using ~ expansion' '
 	test_cmp templatedir-source/file templatedir-expansion/.git/file
 '
 
+test_expect_success 'init with init.templateDir=does-not-exist' '
+	test_when_finished "rm -rf repo" &&
+	(
+		no_templatedir_env &&
+
+		cat >expect <<-\EOF &&
+		warning: templates not found in does-not-exist
+		EOF
+		git -c init.templateDir=does-not-exist init repo 2>actual &&
+		test_cmp expect actual
+	)
+'
+
+test_expect_success 'init with init.templateDir=[bool]' '
+	test_when_finished "rm -rf repo" &&
+	(
+		no_templatedir_env &&
+
+		cat >expect <<-\EOF &&
+		warning: templates not found in false
+		EOF
+		git -c init.templateDir=false init repo 2>actual &&
+		test_cmp expect actual
+	)
+'
+
 test_expect_success 'init --bare/--shared overrides system/global config' '
 	test_config_global core.bare false &&
 	test_config_global core.sharedRepository 0640 &&
-- 
2.34.1.1020.gb1392dd1877