mongodb-js · addaleax · Apr 11, 2025 · Apr 11, 2025
@@ -108,6 +108,12 @@ describe('BSON printers', function () {
      ).to.equal('Binary.fromPackedBits(new Uint8Array([ 1, 2, 3 ]))');
    });

+    it('formats PackedBits correctly with padding', function () {
+      expect(
+        inspect(bson.Binary.fromPackedBits(new Uint8Array([1, 2, 3]), 7))
+      ).to.equal('Binary.fromPackedBits(new Uint8Array([ 1, 2, 3 ]), 7)');
+    });
+
    it('formats Float32Array correctly', function () {
      expect(
        inspect(

@@ -59,15 +59,17 @@ const binaryVectorInspect = function (
          maxArrayLength: utilInspect.defaultOptions.maxArrayLength,
        })
      )}))`;
-    case BSON.Binary.VECTOR_TYPE.PackedBit:
+    case BSON.Binary.VECTOR_TYPE.PackedBit: {
+      const paddingInfo = this.buffer[1] === 0 ? '' : `, ${this.buffer[1]}`;
      return `Binary.fromPackedBits(new Uint8Array(${removeTypedArrayPrefixFromInspectResult(
        utilInspect(this.toPackedBits(), {
          depth,
          ...options,
          // These arrays can be very large, so would prefer to use the default options instead.
          maxArrayLength: utilInspect.defaultOptions.maxArrayLength,
        })
-      )}))`;
+      )})${paddingInfo})`;
+    }
    default:
      return binaryInspect.call(this, depth, options);
  }