[PATCH v2 1/7] t1300: test "set all" mode with value_regex

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From: Derrick Stolee <dstolee@xxxxxxxxxxxxx>

Without additional modifiers, 'git config' attempts to set a single
value in the .git/config file. When the value_regex parameter is
supplied, this command behaves in a non-trivial manner.

Consider 'git config key value value_regex'. The expected behavior
is as follows:

1. If there are multiple existing values that match 'value_regex',
   then the command fails. Users should use --replace-all instead.

2. If there is one existing value that matches 'value_regex', then
   the new config has one entry where 'key=value'.

3. If there is no existing values match 'value_regex', then the
   'key=value' pair is appended, making this 'key' a multi-valued
   config setting.

Add a test that demonstrates these options. Break from the existing
pattern in t1300-config.sh to use 'git config --file=<file>' instead of
modifying .git/config directly. Also use 'git config --file=<file>
--list' for config state comparison instead of the config file format.

Signed-off-by: Derrick Stolee <dstolee@xxxxxxxxxxxxx>
---
 t/t1300-config.sh | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/t/t1300-config.sh b/t/t1300-config.sh
index 97ebfe1f9d..19836ec83b 100755
--- a/t/t1300-config.sh
+++ b/t/t1300-config.sh
@@ -1914,4 +1914,36 @@ test_expect_success '--replace-all does not invent newlines' '
 	test_cmp expect .git/config
 '
 
+test_expect_success 'set all config with value_regex' '
+	git config --file=initial abc.key one &&
+
+	cp initial config &&
+	git config --file=config abc.key two a+ &&
+	git config --file=config --list >actual &&
+	cat >expect <<-\EOF &&
+	abc.key=one
+	abc.key=two
+	EOF
+	test_cmp expect actual &&
+
+	test_must_fail git config --file=config abc.key three o+ 2>err &&
+	test_i18ngrep "has multiple values" err &&
+	git config --file=config abc.key three a+ &&
+	git config --file=config --list >actual &&
+	cat >expect <<-\EOF &&
+	abc.key=one
+	abc.key=two
+	abc.key=three
+	EOF
+	test_cmp expect actual &&
+
+	cp initial config &&
+	git config --file=config abc.key three o+ &&
+	git config --file=config --list >actual &&
+	cat >expect <<-\EOF &&
+	abc.key=three
+	EOF
+	test_cmp expect actual
+'
+
 test_done
-- 
gitgitgadget




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