From f49da5531979d9904b9241cbeaacd36187116c2f Mon Sep 17 00:00:00 2001
From: MarsLuay <70299537+MarsLuay@users.noreply.github.com>
Date: Tue, 25 Aug 2026 09:23:04 +0000
Subject: [PATCH] test: add tests for formatFindResultStatus and wrapMatchIndex

---
 tests/find-replace-shell.test.mjs | 71 +++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 tests/find-replace-shell.test.mjs

diff --git a/tests/find-replace-shell.test.mjs b/tests/find-replace-shell.test.mjs
new file mode 100644
index 0000000..35ca8bf
--- /dev/null
+++ b/tests/find-replace-shell.test.mjs
@@ -0,0 +1,71 @@
+import assert from 'node:assert/strict';
+import { mkdtemp, rm } from 'node:fs/promises';
+import { tmpdir } from 'node:os';
+import path from 'node:path';
+import { fileURLToPath, pathToFileURL } from 'node:url';
+import test from 'node:test';
+import { build } from 'esbuild';
+
+const projectRoot = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
+
+async function loadFindReplaceShellModule() {
+  const outdir = await mkdtemp(path.join(tmpdir(), 'npde-find-replace-shell-test-'));
+  const outfile = path.join(outdir, 'find-replace-shell.cjs');
+  try {
+    await build({
+      absWorkingDir: projectRoot,
+      entryPoints: ['src/find/findReplaceShell.ts'],
+      bundle: true,
+      format: 'cjs',
+      logLevel: 'silent',
+      outfile,
+      platform: 'node',
+      target: 'node22',
+    });
+    const mod = await import(pathToFileURL(outfile).href);
+    return mod;
+  } finally {
+    await rm(outdir, { recursive: true, force: true }).catch(() => {});
+  }
+}
+
+const { formatFindResultStatus, wrapMatchIndex } = await loadFindReplaceShellModule();
+
+const labels = {
+  noSearch: 'No search term',
+  noMatches: 'No matches found',
+  resultCount: (current, total) => `${current} of ${total}`,
+};
+
+test('formatFindResultStatus returns noSearch when query is empty or whitespace', () => {
+  assert.equal(formatFindResultStatus('', 0, 5, labels), 'No search term');
+  assert.equal(formatFindResultStatus('   ', 0, 5, labels), 'No search term');
+  assert.equal(formatFindResultStatus('\t\n', 2, 10, labels), 'No search term');
+});
+
+test('formatFindResultStatus returns noMatches when matchCount is zero or negative', () => {
+  assert.equal(formatFindResultStatus('test', 0, 0, labels), 'No matches found');
+  assert.equal(formatFindResultStatus('test', 0, -1, labels), 'No matches found');
+});
+
+test('formatFindResultStatus formats result count correctly with 1-based indexing', () => {
+  assert.equal(formatFindResultStatus('test', 0, 5, labels), '1 of 5');
+  assert.equal(formatFindResultStatus('test', 2, 5, labels), '3 of 5');
+  assert.equal(formatFindResultStatus('test', 4, 5, labels), '5 of 5');
+});
+
+test('wrapMatchIndex handles zero or negative match count', () => {
+  assert.equal(wrapMatchIndex(0, 1, 0), 0);
+  assert.equal(wrapMatchIndex(2, -1, -5), 0);
+});
+
+test('wrapMatchIndex navigates forward and backward with wrap-around', () => {
+  // Match count = 3 (valid indices 0, 1, 2)
+  assert.equal(wrapMatchIndex(0, 1, 3), 1);
+  assert.equal(wrapMatchIndex(1, 1, 3), 2);
+  assert.equal(wrapMatchIndex(2, 1, 3), 0); // Wraps to start
+
+  assert.equal(wrapMatchIndex(0, -1, 3), 2); // Wraps to end
+  assert.equal(wrapMatchIndex(2, -1, 3), 1);
+  assert.equal(wrapMatchIndex(1, -1, 3), 0);
+});