From 45fa0c1d35a9ffaa67180ac3c758cbde0e210d88 Mon Sep 17 00:00:00 2001
From: Alec Gibson <12036746+alecgibson@users.noreply.github.com>
Date: Tue, 28 Feb 2023 18:07:20 +0000
Subject: [PATCH] =?UTF-8?q?=E2=9C=85=20Fix=20`npm=20test`?=
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This is broken in a fresh install:

```
npm install
npm test
```

This is because `npm` will fetch `mongodb@5` (the latest it can), but
running `npm test` without the `_SHAREDB_MONGODB_DRIVER` variable set
means that the map reduce test still runs, when `mongodb@5` doesn't
support it.

This change tweaks the test to check if the function is defined, instead
of relying on the environment variable.
---
 test/test_mongo.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/test/test_mongo.js b/test/test_mongo.js
index 40d0e4a..79e1f73 100644
--- a/test/test_mongo.js
+++ b/test/test_mongo.js
@@ -334,9 +334,10 @@ describe('mongo db', function() {
     });
 
     it('$mapReduce queries should work when allowJavaScriptQuery == true', function(done) {
-      if (process.env._SHAREDB_MONGODB_DRIVER === 'mongodb5') {
-        // This function was removed in mongodb5:
-        // https://github.com/mongodb/node-mongodb-native/pull/3511
+      // This function was removed in mongodb5:
+      // https://github.com/mongodb/node-mongodb-native/pull/3511
+      var mapReduceSupported = typeof this.db.mongo.collection('test').mapReduce === 'function';
+      if (!mapReduceSupported) {
         return done();
       }
       var snapshots = [