Exercise the Present repository codepath

Author: smashwilson

test/models/workdir-context-pool.test.js

@@ -371,7 +371,9 @@ describe('WorkdirContextPool', function() {
 
   describe('cross-instance cache invalidation', function() {
     it('invalidates a config cache key in different instances when a global setting is changed', async function() {
-      const value = String(Date.now());
+      const base = String(Date.now());
+      const value0 = `${base}-0`;
+      const value1 = `${base}-1`;
 
       const repo0 = pool.add(await cloneRepository('three-files')).getRepository();
       const repo1 = pool.add(await cloneRepository('three-files')).getRepository();
@@ -383,17 +385,27 @@ describe('WorkdirContextPool', function() {
         [repo0, repo1, repo2].map(repo => repo.getConfig('atomGithub.test')),
       );
 
-      assert.notInclude([before0, before1, before2], value);
+      assert.notInclude([before0, before1, before2], value0);
 
-      await repo2.setConfig('atomGithub.test', value, {global: true});
+      await repo2.setConfig('atomGithub.test', value0, {global: true});
 
       const [after0, after1, after2] = await Promise.all(
         [repo0, repo1, repo2].map(repo => repo.getConfig('atomGithub.test')),
       );
 
-      assert.strictEqual(after0, value);
-      assert.strictEqual(after1, value);
-      assert.strictEqual(after2, value);
+      assert.strictEqual(after0, value0);
+      assert.strictEqual(after1, value0);
+      assert.strictEqual(after2, value0);
+
+      await repo0.setConfig('atomGithub.test', value1, {global: true});
+
+      const [final0, final1, final2] = await Promise.all(
+        [repo0, repo1, repo2].map(repo => repo.getConfig('atomGithub.test')),
+      );
+
+      assert.strictEqual(final0, value1);
+      assert.strictEqual(final1, value1);
+      assert.strictEqual(final2, value1);
     });
   });
 });