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-rwxr-xr-xt/t2017-checkout-orphan.sh138
1 files changed, 138 insertions, 0 deletions
diff --git a/t/t2017-checkout-orphan.sh b/t/t2017-checkout-orphan.sh
new file mode 100755
index 0000000..947d158
--- /dev/null
+++ b/t/t2017-checkout-orphan.sh
@@ -0,0 +1,138 @@
+#!/bin/sh
+#
+# Copyright (c) 2010 Erick Mattos
+#
+
+test_description='git checkout --orphan
+
+Main Tests for --orphan functionality.'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+TEST_PASSES_SANITIZE_LEAK=true
+. ./test-lib.sh
+
+TEST_FILE=foo
+
+test_expect_success 'Setup' '
+ echo "Initial" >"$TEST_FILE" &&
+ git add "$TEST_FILE" &&
+ git commit -m "First Commit" &&
+ test_tick &&
+ echo "State 1" >>"$TEST_FILE" &&
+ git add "$TEST_FILE" &&
+ test_tick &&
+ git commit -m "Second Commit"
+'
+
+test_expect_success '--orphan creates a new orphan branch from HEAD' '
+ git checkout --orphan alpha &&
+ test_must_fail git rev-parse --verify HEAD &&
+ test "refs/heads/alpha" = "$(git symbolic-ref HEAD)" &&
+ test_tick &&
+ git commit -m "Third Commit" &&
+ test_must_fail git rev-parse --verify HEAD^ &&
+ git diff-tree --quiet main alpha
+'
+
+test_expect_success '--orphan creates a new orphan branch from <start_point>' '
+ git checkout main &&
+ git checkout --orphan beta main^ &&
+ test_must_fail git rev-parse --verify HEAD &&
+ test "refs/heads/beta" = "$(git symbolic-ref HEAD)" &&
+ test_tick &&
+ git commit -m "Fourth Commit" &&
+ test_must_fail git rev-parse --verify HEAD^ &&
+ git diff-tree --quiet main^ beta
+'
+
+test_expect_success '--orphan must be rejected with -b' '
+ git checkout main &&
+ test_must_fail git checkout --orphan new -b newer &&
+ test refs/heads/main = "$(git symbolic-ref HEAD)"
+'
+
+test_expect_success '--orphan must be rejected with -t' '
+ git checkout main &&
+ test_must_fail git checkout --orphan new -t main &&
+ test refs/heads/main = "$(git symbolic-ref HEAD)"
+'
+
+test_expect_success '--orphan ignores branch.autosetupmerge' '
+ git checkout main &&
+ git config branch.autosetupmerge always &&
+ git checkout --orphan gamma &&
+ test_cmp_config "" --default "" branch.gamma.merge &&
+ test refs/heads/gamma = "$(git symbolic-ref HEAD)" &&
+ test_must_fail git rev-parse --verify HEAD^ &&
+ git checkout main &&
+ git config branch.autosetupmerge inherit &&
+ git checkout --orphan eta &&
+ test_cmp_config "" --default "" branch.eta.merge &&
+ test_cmp_config "" --default "" branch.eta.remote &&
+ echo refs/heads/eta >expected &&
+ git symbolic-ref HEAD >actual &&
+ test_cmp expected actual &&
+ test_must_fail git rev-parse --verify HEAD^
+'
+
+test_expect_success '--orphan makes reflog by default' '
+ git checkout main &&
+ git config --unset core.logAllRefUpdates &&
+ git checkout --orphan delta &&
+ test_must_fail git rev-parse --verify delta@{0} &&
+ git commit -m Delta &&
+ git rev-parse --verify delta@{0}
+'
+
+test_expect_success REFFILES '--orphan does not make reflog when core.logAllRefUpdates = false' '
+ git checkout main &&
+ git config core.logAllRefUpdates false &&
+ git checkout --orphan epsilon &&
+ test_must_fail git rev-parse --verify epsilon@{0} &&
+ git commit -m Epsilon &&
+ test_must_fail git rev-parse --verify epsilon@{0}
+'
+
+test_expect_success '--orphan with -l makes reflog when core.logAllRefUpdates = false' '
+ git checkout main &&
+ git checkout -l --orphan zeta &&
+ test_must_fail git rev-parse --verify zeta@{0} &&
+ git commit -m Zeta &&
+ git rev-parse --verify zeta@{0}
+'
+
+test_expect_success 'giving up --orphan not committed when -l and core.logAllRefUpdates = false deletes reflog' '
+ git checkout main &&
+ git checkout -l --orphan eta &&
+ test_must_fail git rev-parse --verify eta@{0} &&
+ git checkout main &&
+ test_must_fail git rev-parse --verify eta@{0}
+'
+
+test_expect_success '--orphan is rejected with an existing name' '
+ git checkout main &&
+ test_must_fail git checkout --orphan main &&
+ test refs/heads/main = "$(git symbolic-ref HEAD)"
+'
+
+test_expect_success '--orphan refuses to switch if a merge is needed' '
+ git checkout main &&
+ git reset --hard &&
+ echo local >>"$TEST_FILE" &&
+ cat "$TEST_FILE" >"$TEST_FILE.saved" &&
+ test_must_fail git checkout --orphan new main^ &&
+ test refs/heads/main = "$(git symbolic-ref HEAD)" &&
+ test_cmp "$TEST_FILE" "$TEST_FILE.saved" &&
+ git diff-index --quiet --cached HEAD &&
+ git reset --hard
+'
+
+test_expect_success 'cannot --detach on an unborn branch' '
+ git checkout main &&
+ git checkout --orphan new &&
+ test_must_fail git checkout --detach
+'
+
+test_done