mirage: Add GET /api/v1/crates/:name/:version endpoint

Author: eth3lbert

mirage/route-handlers/crates.js

@@ -354,6 +354,23 @@ export function register(server) {
     return { ok: true, msg: 'owners successfully removed' };
   });
 
+  server.get('/api/v1/crates/:name/:version', function (schema, request) {
+    let { name } = request.params;
+    let crate = schema.crates.findBy({ name });
+    if (!crate) return notFound();
+
+    let num = request.params.version;
+    let version = schema.versions.findBy({ crateId: crate.id, num });
+    if (!version) {
+      return new Response(
+        404,
+        {},
+        { errors: [{ detail: `crate \`${crate.name}\` does not have a version \`${num}\`` }] },
+      );
+    }
+    return this.serialize(version);
+  });
+
   server.patch('/api/v1/crates/:name/:version', function (schema, request) {
     let { user } = getSession(schema);
     if (!user) {

tests/mirage/crates/versions/get-by-num-test.js

@@ -0,0 +1,57 @@
+import { module, test } from 'qunit';
+
+import fetch from 'fetch';
+
+import { setupTest } from '../../../helpers';
+import setupMirage from '../../../helpers/setup-mirage';
+
+module('Mirage | GET /api/v1/crates/:name/:version', function (hooks) {
+  setupTest(hooks);
+  setupMirage(hooks);
+
+  test('returns 404 for unknown crates', async function (assert) {
+    let response = await fetch('/api/v1/crates/foo/1.0.0-beta.1');
+    assert.strictEqual(response.status, 404);
+    assert.deepEqual(await response.json(), { errors: [{ detail: 'Not Found' }] });
+  });
+
+  test('returns 404 for unknown versions', async function (assert) {
+    let crate = this.server.create('crate', { name: 'rand' });
+    this.server.create('version', { crate, num: '1.0.0-alpha.1' });
+    let response = await fetch('/api/v1/crates/rand/1.0.0-beta.1');
+    assert.strictEqual(response.status, 404);
+    assert.deepEqual(await response.json(), {
+      errors: [{ detail: 'crate `rand` does not have a version `1.0.0-beta.1`' }],
+    });
+  });
+
+  test('returns a version object for known version', async function (assert) {
+    let crate = this.server.create('crate', { name: 'rand' });
+    this.server.create('version', { crate, num: '1.0.0-beta.1' });
+
+    let response = await fetch('/api/v1/crates/rand/1.0.0-beta.1');
+    assert.strictEqual(response.status, 200);
+    assert.deepEqual(await response.json(), {
+      version: {
+        crate: 'rand',
+        crate_size: 0,
+        created_at: '2010-06-16T21:30:45Z',
+        dl_path: '/api/v1/crates/rand/1.0.0-beta.1/download',
+        downloads: 0,
+        id: '1',
+        license: 'MIT/Apache-2.0',
+        links: {
+          dependencies: '/api/v1/crates/rand/1.0.0-beta.1/dependencies',
+          version_downloads: '/api/v1/crates/rand/1.0.0-beta.1/downloads',
+        },
+        num: '1.0.0-beta.1',
+        published_by: null,
+        readme_path: '/api/v1/crates/rand/1.0.0-beta.1/readme',
+        rust_version: null,
+        updated_at: '2017-02-24T12:34:56Z',
+        yank_message: null,
+        yanked: false,
+      },
+    });
+  });
+});