There is only a single test exercising the dirty state indicator on an
orphan branch, and in that test neither the index nor the worktree are
dirty.

Add two failing tests to check the dirty state indicator while either
the index is dirty or while both the index and the worktree are dirty
on an orphan branch, and to show that the dirtiness of the index is
not displayed in these cases (the forth combination, i.e. clean index
and dirty worktree are impossible on an orphan branch).  Update the
existing dirty state indicator on clean orphan branch test to match
the style of the two new tests, most importantly to use 'git checkout
--orphan' instead of cd-ing into a repository that just happens to be
empty and clean.

Signed-off-by: SZEDER Gábor <sze...@ira.uka.de>
---
 t/t9903-bash-prompt.sh | 31 ++++++++++++++++++++++++++++---
 1 file changed, 28 insertions(+), 3 deletions(-)

diff --git a/t/t9903-bash-prompt.sh b/t/t9903-bash-prompt.sh
index 6b68777b98..2c9d1f928a 100755
--- a/t/t9903-bash-prompt.sh
+++ b/t/t9903-bash-prompt.sh
@@ -273,11 +273,36 @@ test_expect_success 'prompt - dirty status indicator - 
dirty index and worktree'
        test_cmp expected "$actual"
 '
 
-test_expect_success 'prompt - dirty status indicator - before root commit' '
-       printf " (master #)" >expected &&
+test_expect_success 'prompt - dirty status indicator - orphan branch - clean' '
+       printf " (orphan #)" >expected &&
+       test_when_finished "git checkout master" &&
+       git checkout --orphan orphan &&
+       git reset --hard &&
+       (
+               GIT_PS1_SHOWDIRTYSTATE=y &&
+               __git_ps1 >"$actual"
+       ) &&
+       test_cmp expected "$actual"
+'
+
+test_expect_failure 'prompt - dirty status indicator - orphan branch - dirty 
index' '
+       printf " (orphan +)" >expected &&
+       test_when_finished "git checkout master" &&
+       git checkout --orphan orphan &&
+       (
+               GIT_PS1_SHOWDIRTYSTATE=y &&
+               __git_ps1 >"$actual"
+       ) &&
+       test_cmp expected "$actual"
+'
+
+test_expect_failure 'prompt - dirty status indicator - orphan branch - dirty 
index and worktree' '
+       printf " (orphan *+)" >expected &&
+       test_when_finished "git checkout master" &&
+       git checkout --orphan orphan &&
+       >file &&
        (
                GIT_PS1_SHOWDIRTYSTATE=y &&
-               cd otherrepo &&
                __git_ps1 >"$actual"
        ) &&
        test_cmp expected "$actual"
-- 
2.6.3.402.geb6a0f7

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