t1300: add tests for missing keys

There are several tests in t1300-config.sh that validate failing
invocations of "git config".  However, there are no tests that check
what happens when "git config" is asked to retrieve a value for a
missing key.

Add tests that check this for various combinations of "<section>.<key>"
and "<section>.<subsection>.<key>".

Signed-off-by: Andrei Rybak <rybak.a.v@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t1300-config.sh b/t/t1300-config.sh
index 20a15ede5c3877f7835175b2a6464895dbf61659..423948f384d43dd65d74f09e3509beeab5e1fc92 100755 (executable)
--- a/t/t1300-config.sh
+++ b/t/t1300-config.sh
@@ -98,6 +98,23 @@ test_expect_success 'subsections are not canonicalized by git-config' '
        test_cmp_config two section.SubSection.key
 '
 
+test_missing_key () {
+       local key="$1" &&
+       local title="$2" &&
+       test_expect_success "value for $title is not printed" '
+               test_must_fail git config "$key" >out 2>err &&
+               test_must_be_empty out &&
+               test_must_be_empty err
+       '
+}
+
+test_missing_key 'missingsection.missingkey' 'missing section and missing key'
+test_missing_key 'missingsection.penguin' 'missing section and existing key'
+test_missing_key 'section.missingkey' 'existing section and missing key'
+test_missing_key 'section.MissingSubSection.missingkey' 'missing subsection and missing key'
+test_missing_key 'section.SubSection.missingkey' 'existing subsection and missing key'
+test_missing_key 'section.MissingSubSection.key' 'missing subsection and existing key'
+
 cat > .git/config <<\EOF
 [alpha]
 bar = foo