The DWIM mode of checkout allows you to run "git checkout foo" when there is
no existing local ref or path called "foo", and there is exactly one remote
with a remote-tracking branch called "foo". Git will then automatically
create a new local branch called "foo" using the remote-tracking "foo" as
its starting point and configured upstream.
Signed-off-by: Johan Herland <jo...@herland.net>
---
t/t2024-checkout-dwim.sh | 66 ++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 66 insertions(+)
create mode 100755 t/t2024-checkout-dwim.sh
diff --git a/t/t2024-checkout-dwim.sh b/t/t2024-checkout-dwim.sh
new file mode 100755
index 0000000..5650d21
--- /dev/null
+++ b/t/t2024-checkout-dwim.sh
@@ -0,0 +1,66 @@
+#!/bin/sh
+
+test_description='checkout <branch>
+
+Ensures that checkout on an unborn branch does what the user expects'
+
+. ./test-lib.sh
+
+# Arguments: <branch> <remote> <remote-tracking>
+#
+# Verify that we have checked out <branch>, and that it is at the same
+# commit as <remote-tracking>, and that has appropriate tracking config
+# setup against <remote>
+test_tracking_branch() {
+ branch=$1 &&
+ remote=$2 &&
+ remote_track=$3 &&
+ test "refs/heads/$branch" = "$(git rev-parse --symbolic-full-name
HEAD)" &&
+ test "$(git rev-parse --verify HEAD)" = "$(git rev-parse --verify
"$remote_track")" &&
+ test "$remote" = "$(git config "branch.$branch.remote")" &&
+ test "refs/heads/$branch" = "$(git config "branch.$branch.merge")"
+}
+
+test_expect_success 'setup' '
+ (git init repo_a &&
+ cd repo_a &&
+ test_commit a_master &&
+ git checkout -b foo &&
+ test_commit a_foo &&
+ git checkout -b bar &&
+ test_commit a_bar
+ ) &&
+ (git init repo_b &&
+ cd repo_b &&
+ test_commit b_master &&
+ git checkout -b foo &&
+ test_commit b_foo &&
+ git checkout -b baz &&
+ test_commit b_baz
+ ) &&
+ git remote add repo_a repo_a &&
+ git remote add repo_b repo_b &&
+ git config remote.repo_b.fetch \
+ "+refs/heads/*:refs/remotes/other_b/*" &&
+ git fetch --all
+'
+
+test_expect_success 'checkout of non-existing branch fails' '
+ test_must_fail git checkout xyzzy
+'
+
+test_expect_success 'checkout of branch from multiple remotes fails' '
+ test_must_fail git checkout foo
+'
+
+test_expect_success 'checkout of branch from a single remote succeeds #1' '
+ git checkout bar &&
+ test_tracking_branch bar repo_a refs/remotes/repo_a/bar
+'
+
+test_expect_success 'checkout of branch from a single remote succeeds #2' '
+ git checkout baz &&
+ test_tracking_branch baz repo_b refs/remotes/other_b/baz
+'
+
+test_done
--
1.8.1.3.704.g33f7d4f
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