1 files changed, 45 insertions, 0 deletions
diff --git a/jstests/core/query/nestedobj1.js b/jstests/core/query/nestedobj1.js
new file mode 100644
index 00000000000..ba97f326934
--- /dev/null
+++ b/jstests/core/query/nestedobj1.js
@@ -0,0 +1,45 @@
+// @tags: [requires_getmore, requires_fastcount]
+
+/**
+ * Inserts documents with an indexed nested document field, progressively increasing the nesting
+ * depth until the key is too large to index. This tests that we support at least the minimum
+ * supported BSON nesting depth, as well as maintaining index consistency.
+ */
+(function() {
+"use strict";
+
+function makeNestObj(depth) {
+    if (depth == 1) {
+        return {a: 1};
+    } else {
+        return {a: makeNestObj(depth - 1)};
+    }
+}
+
+let collection = db.objNestTest;
+collection.drop();
+
+assert.commandWorked(collection.createIndex({a: 1}));
+
+const kMaxDocumentDepthSoftLimit = 100;
+const kJavaScriptMaxDepthLimit = 150;
+
+let level;
+for (level = 1; level < kJavaScriptMaxDepthLimit - 3; level++) {
+    let object = makeNestObj(level);
+    let res = db.runCommand({insert: collection.getName(), documents: [makeNestObj(level)]});
+    if (!res.ok) {
+        assert.commandFailedWithCode(
+            res, 17280, "Expected insertion to fail only because key is too large to index");
+        break;
+    }
+}
+
+assert.gt(level,
+          kMaxDocumentDepthSoftLimit,
+          "Unable to insert a document nested with " + level +
+              " levels, which is less than the supported limit of " + kMaxDocumentDepthSoftLimit);
+assert.eq(collection.count(),
+          collection.find().hint({a: 1}).itcount(),
+          "Number of documents in collection does not match number of entries in index");
+}());