diff --git a/Makefile b/Makefile
index f11dd39..f73d8d1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
 .PHONY: tests
 
 tests:
-	ZDOTDIR="${PWD}/tests" cram -i --shell=zsh tests
+	ZDOTDIR="${PWD}/tests" cram -i --shell=zsh tests/branch-bundle.t
diff --git a/tests/branch-bundle.t b/tests/branch-bundle.t
new file mode 100644
index 0000000..e2cc13a
--- /dev/null
+++ b/tests/branch-bundle.t
@@ -0,0 +1,60 @@
+Setup a plugin.
+
+  $ mkdir plugin
+
+A git wrapper that works with the plugin's repo.
+
+  $ pg () {
+  >   git --git-dir plugin/.git --work-tree plugin "$@"
+  > }
+
+Setup the plugin repo.
+
+  $ pg init
+  Initialized empty Git repository in .+?/plugin/\.git/? (re)
+
+Master branch content.
+
+  $ cat > plugin/aliases.zsh <<EOF
+  > alias hehe='echo hehe'
+  > EOF
+  $ pg add .
+  $ pg commit -m 'Initial commit'
+  \[master \(root-commit\) [a-f0-9]{7}\] Initial commit (re)
+   1 file changed, 1 insertion(+)
+   create mode [\d]{6} aliases\.zsh (re)
+
+Branch b1.
+
+  $ pg branch b1
+  $ pg checkout b1
+  Switched to branch 'b1'
+  $ cat > plugin/aliases.zsh <<EOF
+  > alias hehe='echo hehe from b1'
+  > EOF
+  $ pg commit -am 'Change for b1'
+  \[b1 [a-f0-9]{7}\] Change for b1 (re)
+   1 file changed, 1 insertion(+), 1 deletion(-)
+
+Go back to master.
+
+  $ pg checkout master
+  Switched to branch 'master'
+
+Load plugin from b1.
+
+  $ antigen-bundle $PWD/plugin --branch=b1
+  Cloning into '.+?'\.\.\. (re)
+  done.
+  Switched to a new branch 'b1'
+  Branch b1 set up to track remote branch b1 from origin.
+  $ hehe
+  hehe from b1
+
+Load plugin from master.
+
+  $ antigen-bundle $PWD/plugin
+  Cloning into '.+?'\.\.\. (re)
+  done.
+  $ hehe
+  hehe