t0040-parse-options: improve test coverage

diff --git a/t/t0001-init.sh b/t/t0001-init.sh
index 295aa5949a13baeb8cafff0a6782f6e49e68a075..a5b9e7a4c7e85a2f09718ee7618ae6fb48c600fe 100755 (executable)
--- a/t/t0001-init.sh
+++ b/t/t0001-init.sh
@@ -88,19 +88,17 @@ test_expect_success 'plain nested in bare through aliased command' '
 '
 
 test_expect_success 'No extra GIT_* on alias scripts' '
-       (
-               env | sed -ne "/^GIT_/s/=.*//p" &&
-               echo GIT_PREFIX &&        # setup.c
-               echo GIT_TEXTDOMAINDIR    # wrapper-for-bin.sh
-       ) | sort | uniq >expected &&
-       cat <<-\EOF >script &&
-       #!/bin/sh
-       env | sed -ne "/^GIT_/s/=.*//p" | sort >actual
-       exit 0
+       write_script script <<-\EOF &&
+       env |
+               sed -n \
+                       -e "/^GIT_PREFIX=/d" \
+                       -e "/^GIT_TEXTDOMAINDIR=/d" \
+                       -e "/^GIT_/s/=.*//p" |
+               sort
        EOF
-       chmod 755 script &&
+       ./script >expected &&
        git config alias.script \!./script &&
-       ( mkdir sub && cd sub && git script ) &&
+       ( mkdir sub && cd sub && git script >../actual ) &&
        test_cmp expected actual
 '