feat: help screen + main dispatch

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

1 files changed, 30 insertions, 0 deletions

diff --git a/tests/wallp.bats b/tests/wallp.bats
index ad4b9bf..0d6fc7e 100644
--- a/tests/wallp.bats
+++ b/tests/wallp.bats
@@ -237,3 +237,33 @@ teardown() {
   [ "$status" -eq 1 ]
   [[ "$output" == *"no display"* ]]
 }
+
+@test "bare invocation shows help" {
+  unset WAYLAND_DISPLAY
+  run main
+  [ "$status" -eq 0 ]
+  [[ "$output" == *"Usage"* ]]
+}
+
+@test "unknown flag errors with help" {
+  unset WAYLAND_DISPLAY
+  run main --bogus
+  [ "$status" -eq 1 ]
+  [[ "$output" == *"Usage"* ]]
+}
+
+@test "bootstrap on missing conf exits zero without setting wallpaper" {
+  unset WAYLAND_DISPLAY
+  run main --restore
+  [ "$status" -eq 0 ]
+  [ ! -e "$HOME/.cache/wallp/H.pid" ]
+}
+
+@test "theme flag honored through main with restore" {
+  unset WAYLAND_DISPLAY
+  mkdir -p "$HOME/.config/wallp"
+  printf '%s\n' 'OUTPUT_H=DP-1' 'OUTPUT_V=DP-3' \
+    'DEFAULT_H=/dh.png' 'DEFAULT_V=/dv.png' > "$HOME/.config/wallp/wallp.conf"
+  main --restore --theme tflag
+  [ "$(cat "$HOME/.config/wallp/theme")" = "tflag" ]
+}