Improve searching for pages (#60)

This improves the algorithm for searching for pages. It now works like:

1. If pathname ends with /
  1. Look for PATHNAME/index.astro
  1. Look for PATHNAME/index.md
1. else
  1. Look for PATHNAME.astro
  1. Look for PATHNAME.md
1. Look for PATHNAME/index.astro
  1. 301
1. Look for PATHNAME/index.md
  1. 301
1. 404

1 files changed, 41 insertions, 0 deletions

diff --git a/test/astro-search.test.js b/test/astro-search.test.js
new file mode 100644
index 000000000..415bc4432
--- /dev/null
+++ b/test/astro-search.test.js
@@ -0,0 +1,41 @@
+import { suite } from 'uvu';
+import * as assert from 'uvu/assert';
+import { setup } from './helpers.js';
+
+const Search = suite('Search paths');
+
+setup(Search, './fixtures/astro-basic');
+
+Search('Finds the root page', async ({ runtime }) => {
+  const result = await runtime.load('/');
+  assert.equal(result.statusCode, 200);
+});
+
+Search('Matches pathname to filename', async ({ runtime }) => {
+  const result = await runtime.load('/news');
+  assert.equal(result.statusCode, 200);
+});
+
+Search('A URL with a trailing slash can match a folder with an index.astro', async ({ runtime }) => {
+  const result = await runtime.load('/nested-astro/');
+  assert.equal(result.statusCode, 200);
+});
+
+Search('A URL with a trailing slash can match a folder with an index.md', async ({ runtime }) => {
+  const result = await runtime.load('/nested-md/');
+  assert.equal(result.statusCode, 200);
+});
+
+Search('A URL without a trailing slash can redirect to a folder with an index.astro', async ({ runtime }) => {
+  const result = await runtime.load('/nested-astro');
+  assert.equal(result.statusCode, 301);
+  assert.equal(result.location, '/nested-astro/');
+});
+
+Search('A URL without a trailing slash can redirect to a folder with an index.md', async ({ runtime }) => {
+  const result = await runtime.load('/nested-md');
+  assert.equal(result.statusCode, 301);
+  assert.equal(result.location, '/nested-md/');
+});
+
+Search.run();