CDRIVER-4122 Add BSON corpus test for binary subtype 7 (mongodb#859)

Author: eramongodb

src/libbson/doc/bson_subtype_t.rst

@@ -20,6 +20,7 @@ Synopsis
      BSON_SUBTYPE_UUID_DEPRECATED = 0x03,
      BSON_SUBTYPE_UUID = 0x04,
      BSON_SUBTYPE_MD5 = 0x05,
+     BSON_SUBTYPE_COLUMN = 0x07,
      BSON_SUBTYPE_USER = 0x80,
   } bson_subtype_t;
 

src/libbson/src/bson/bson-types.h

@@ -282,6 +282,7 @@ typedef enum {
    BSON_SUBTYPE_UUID = 0x04,
    BSON_SUBTYPE_MD5 = 0x05,
    BSON_SUBTYPE_ENCRYPTED = 0x06,
+   BSON_SUBTYPE_COLUMN = 0x07,
    BSON_SUBTYPE_USER = 0x80,
 } bson_subtype_t;
 

src/libbson/tests/json/bson_corpus/binary.json

@@ -50,6 +50,11 @@
             "canonical_bson": "1D000000057800100000000573FFD26444B34C6990E8E7D1DFC035D400",
             "canonical_extjson": "{\"x\" : { \"$binary\" : {\"base64\" : \"c//SZESzTGmQ6OfR38A11A==\", \"subType\" : \"05\"}}}"
         },
+        {
+            "description": "subtype 0x07",
+            "canonical_bson": "1D000000057800100000000773FFD26444B34C6990E8E7D1DFC035D400",
+            "canonical_extjson": "{\"x\" : { \"$binary\" : {\"base64\" : \"c//SZESzTGmQ6OfR38A11A==\", \"subType\" : \"07\"}}}"
+        },
         {
             "description": "subtype 0x80",
             "canonical_bson": "0F0000000578000200000080FFFF00",