1 files changed, 57 insertions, 0 deletions
diff --git a/jstests/core/index/geo/geo_fiddly_box.js b/jstests/core/index/geo/geo_fiddly_box.js
new file mode 100644
index 00000000000..9f5a9e8d6c4
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+++ b/jstests/core/index/geo/geo_fiddly_box.js
@@ -0,0 +1,57 @@
+// Reproduces simple test for SERVER-2832
+//
+// @tags: [
+//   requires_fastcount,
+// ]
+
+// The setup to reproduce was/is to create a set of points where the
+// "expand" portion of the geo-lookup expands the 2d range in only one
+// direction (so points are required on either side of the expanding range)
+
+t = db.geo_fiddly_box;
+
+t.drop();
+t.createIndex({loc: "2d"});
+
+t.insert({"loc": [3, 1]});
+t.insert({"loc": [3, 0.5]});
+t.insert({"loc": [3, 0.25]});
+t.insert({"loc": [3, -0.01]});
+t.insert({"loc": [3, -0.25]});
+t.insert({"loc": [3, -0.5]});
+t.insert({"loc": [3, -1]});
+
+// OK!
+print(t.count());
+assert.eq(
+    7, t.count({"loc": {"$within": {"$box": [[2, -2], [46, 2]]}}}), "Not all locations found!");
+
+// Test normal lookup of a small square of points as a sanity check.
+
+epsilon = 0.0001;
+min = -1;
+max = 1;
+step = 1;
+numItems = 0;
+
+t.drop();
+t.createIndex({loc: "2d"}, {max: max + epsilon / 2, min: min - epsilon / 2});
+
+for (var x = min; x <= max; x += step) {
+    for (var y = min; y <= max; y += step) {
+        t.insert({"loc": {x: x, y: y}});
+        numItems++;
+    }
+}
+
+assert.eq(
+    numItems,
+    t.count({
+        loc: {
+            $within: {
+                $box:
+                    [[min - epsilon / 3, min - epsilon / 3], [max + epsilon / 3, max + epsilon / 3]]
+            }
+        }
+    }),
+    "Not all locations found!");