[tests] additional tweaks to firestore test helpers

bridge/e2e/init.js

@@ -7,5 +7,7 @@ before(async () => {
 });
 
 after(async () => {
+  console.log('Cleaning up...');
+  await TestHelpers.firestore.cleanup();
   await detox.cleanup();
 });

bridge/helpers/firestore.js

@@ -1,10 +1,27 @@
+const TEST_COLLECTION_NAME = 'collection-tests';
+
+let shouldCleanup = false;
+const ONE_HOUR = 60 * 60 * 1000;
+
 module.exports = {
+  async cleanup() {
+    if (!shouldCleanup) return Promise.resolve();
+    await module.exports.cleanCollection(TEST_COLLECTION_NAME);
+    // TODO add any others?
+    return Promise.resolve();
+  },
+
+  TEST_COLLECTION_NAME,
+
   DOC_1: { name: 'doc1' },
+  DOC_1_PATH: `collection-tests/doc1${testRunId}`,
 
   DOC_2: { name: 'doc2', title: 'Document 2' },
+  DOC_2_PATH: `collection-tests/doc2${testRunId}`,
 
   // needs to be a fn as firebase may not yet be available
   COL_DOC_1() {
+    shouldCleanup = true;
     return {
       baz: true,
       daz: 123,
@@ -19,24 +36,73 @@ module.exports = {
     };
   },
 
+  COL_DOC_1_PATH: `collection-tests/col1${testRunId}`,
+  COL_DOC_1_ID: `col1${testRunId}`,
+
   /**
+   * Removes all documents on the collection for the current testId or
+   * documents older than 24 hours
    *
    * @param collectionName
    * @return {Promise<*>}
    */
-  async cleanCollection(collectionName = 'collection-tests') {
+  async cleanCollection(collectionName) {
     const firestore = firebaseAdmin.firestore();
-    const batch = firestore.batch();
-    const collection = firestore.collection(collectionName);
-    const docsToDelete = await collection.get();
+    const collection = firestore.collection(
+      collectionName || TEST_COLLECTION_NAME
+    );
 
-    for (let i = 0, len = docsToDelete.length; i < len; i++) {
-      const { ref, path } = docsToDelete[i];
-      if (path.includes(testRunId)) {
-        batch.delete(ref);
+    const docsToDelete = (await collection.get()).docs;
+    const yesterday = new Date(new Date() - 24 * ONE_HOUR);
+
+    if (docsToDelete.length) {
+      const batch = firestore.batch();
+
+      for (let i = 0, len = docsToDelete.length; i < len; i++) {
+        const { ref } = docsToDelete[i];
+
+        if (
+          ref.path.includes(testRunId) ||
+          new Date(docsToDelete[i].createTime) <= yesterday
+        ) {
+          batch.delete(ref);
+        }
       }
+
+      return batch.commit();
     }
 
-    return writeBatch.commit();
+    return Promise.resolve();
+  },
+
+  testCollection() {
+    shouldCleanup = true;
+    return firebase.firestore().collection(TEST_COLLECTION_NAME);
+  },
+
+  testCollectionDoc() {
+    shouldCleanup = true;
+    return firebase.firestore().doc(module.exports.COL_DOC_1_PATH);
+  },
+
+  testCollectionDocAdmin() {
+    shouldCleanup = true;
+    return firebaseAdmin.firestore().doc(module.exports.COL_DOC_1_PATH);
+  },
+
+  resetTestCollectionDoc() {
+    shouldCleanup = true;
+    return firebase
+      .firestore()
+      .doc(module.exports.COL_DOC_1_PATH)
+      .set(module.exports.COL_DOC_1());
   },
 };
+
+// call a get request without waiting to force firestore to connect
+// so the first test isn't delayed whilst connecting
+module.exports
+  .testCollectionDocAdmin()
+  .get()
+  .then(() => {})
+  .catch(() => {});