Replace Disk Usage TUI with Disktree (#14426)

test/shell.d/disktree-migration-test.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+
+set -euo pipefail
+
+source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
+
+test_tmp=$(mktemp -d)
+trap 'rm -rf "$test_tmp"' EXIT
+mkdir -p "$test_tmp/bin" "$test_tmp/home/.local/share/applications"
+
+for helper in omarchy-pkg-add omarchy-pkg-drop update-desktop-database; do
+  cat > "$test_tmp/bin/$helper" <<'SH'
+#!/bin/bash
+printf '%s %s\n' "${0##*/}" "$*" >> "$TEST_LOG"
+SH
+  chmod +x "$test_tmp/bin/$helper"
+done
+
+launcher="$test_tmp/home/.local/share/applications/Disk Usage.desktop"
+printf '[Desktop Entry]\nExec=dua i /\n' > "$launcher"
+
+for (( attempt = 0; attempt < 2; attempt++ )); do
+  env HOME="$test_tmp/home" OMARCHY_PATH="$ROOT" TEST_LOG="$test_tmp/log" PATH="$test_tmp/bin:$PATH" \
+    bash -euo pipefail "$ROOT/migrations/1791345484.sh"
+  [[ ! -e $launcher ]] || fail "the migration removes the old Disk Usage launcher"
+done
+pass "the Disktree migration removes the old launcher and can run twice"
+
+expected="omarchy-pkg-add disktree-bin
+omarchy-pkg-drop dua-cli
+update-desktop-database $test_tmp/home/.local/share/applications"
+[[ $(cat "$test_tmp/log") == "$expected"$'\n'"$expected" ]] || fail "the migration installs Disktree before removing dua and refreshing launchers"
+pass "the migration installs Disktree before removing dua and refreshing launchers"
+
+rm -r "$test_tmp/home/.local/share/applications"
+env HOME="$test_tmp/home" OMARCHY_PATH="$ROOT" TEST_LOG="$test_tmp/log" PATH="$test_tmp/bin:$PATH" \
+  bash -euo pipefail "$ROOT/migrations/1791345484.sh"
+[[ ! -d $test_tmp/home/.local/share/applications ]] || fail "the migration relies on the packaged Disktree launcher"
+pass "the migration relies on the packaged Disktree launcher when no local launchers exist"