feat: expand_tilde helper

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/tests/wallp.bats b/tests/wallp.bats
index b92b3c2..1307eeb 100644
--- a/tests/wallp.bats
+++ b/tests/wallp.bats
@@ -26,3 +26,14 @@ teardown() {
 @test "harness sanity" {
   [ "x" = "x" ]
 }
+
+@test "expand_tilde expands leading tilde" {
+  run expand_tilde '~/pics/a.png'
+  [ "$status" -eq 0 ]
+  [ "$output" = "$HOME/pics/a.png" ]
+}
+
+@test "expand_tilde leaves absolute path untouched" {
+  run expand_tilde '/abs/b.png'
+  [ "$output" = "/abs/b.png" ]
+}