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-rwxr-xr-xt/t2019-checkout-ambiguous-ref.sh61
1 files changed, 61 insertions, 0 deletions
diff --git a/t/t2019-checkout-ambiguous-ref.sh b/t/t2019-checkout-ambiguous-ref.sh
new file mode 100755
index 0000000..2c8c926
--- /dev/null
+++ b/t/t2019-checkout-ambiguous-ref.sh
@@ -0,0 +1,61 @@
+#!/bin/sh
+
+test_description='checkout handling of ambiguous (branch/tag) refs'
+
+TEST_PASSES_SANITIZE_LEAK=true
+. ./test-lib.sh
+
+test_expect_success 'setup ambiguous refs' '
+ test_commit branch file &&
+ git branch ambiguity &&
+ git branch vagueness &&
+ test_commit tag file &&
+ git tag ambiguity &&
+ git tag vagueness HEAD:file &&
+ test_commit other file
+'
+
+test_expect_success 'checkout ambiguous ref succeeds' '
+ git checkout ambiguity >stdout 2>stderr
+'
+
+test_expect_success 'checkout produces ambiguity warning' '
+ grep "warning.*ambiguous" stderr
+'
+
+test_expect_success 'checkout chooses branch over tag' '
+ echo refs/heads/ambiguity >expect &&
+ git symbolic-ref HEAD >actual &&
+ test_cmp expect actual &&
+ echo branch >expect &&
+ test_cmp expect file
+'
+
+test_expect_success 'checkout reports switch to branch' '
+ test_i18ngrep "Switched to branch" stderr &&
+ test_i18ngrep ! "^HEAD is now at" stderr
+'
+
+test_expect_success 'checkout vague ref succeeds' '
+ git checkout vagueness >stdout 2>stderr &&
+ test_set_prereq VAGUENESS_SUCCESS
+'
+
+test_expect_success VAGUENESS_SUCCESS 'checkout produces ambiguity warning' '
+ grep "warning.*ambiguous" stderr
+'
+
+test_expect_success VAGUENESS_SUCCESS 'checkout chooses branch over tag' '
+ echo refs/heads/vagueness >expect &&
+ git symbolic-ref HEAD >actual &&
+ test_cmp expect actual &&
+ echo branch >expect &&
+ test_cmp expect file
+'
+
+test_expect_success VAGUENESS_SUCCESS 'checkout reports switch to branch' '
+ test_i18ngrep "Switched to branch" stderr &&
+ test_i18ngrep ! "^HEAD is now at" stderr
+'
+
+test_done