# 2017-03-22
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements tests for json_patch(A,B) SQL function.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable !json1 {
  finish_test
  return
}

# This is the example from pages 2 and 3 of RFC-7396
do_execsql_test json104-100 {
  SELECT json_patch('{
       "a": "b",
       "c": {
         "d": "e",
         "f": "g"
       }
     }','{
       "a":"z",
       "c": {
         "f": null
       }
     }');
} {{{"a":"z","c":{"d":"e"}}}}


# This is the example from pages 4 and 5 of RFC-7396 
do_execsql_test json104-110 {
  SELECT json_patch('{
       "title": "Goodbye!",
       "author" : {
         "givenName" : "John",
         "familyName" : "Doe"
       },
       "tags":[ "example", "sample" ],
       "content": "This will be unchanged"
     }','{
       "title": "Hello!",
       "phoneNumber": "+01-123-456-7890",
       "author": {
         "familyName": null
       },
       "tags": [ "example" ]
     }');
} {{{"title":"Hello!","author":{"givenName":"John"},"tags":["example"],"content":"This will be unchanged","phoneNumber":"+01-123-456-7890"}}}

do_execsql_test json104-200 {
  SELECT json_patch('[1,2,3]','{"x":null}');
} {{{}}}
do_execsql_test json104-210 {
  SELECT json_patch('[1,2,3]','{"x":null,"y":1,"z":null}');
} {{{"y":1}}}
do_execsql_test json104-220 {
  SELECT json_patch('{}','{"a":{"bb":{"ccc":null}}}');
} {{{"a":{"bb":{}}}}}
do_execsql_test json104-221 {
  SELECT json_patch('{}','{"a":{"bb":{"ccc":[1,null,3]}}}');
} {{{"a":{"bb":{"ccc":[1,null,3]}}}}}
do_execsql_test json104-222 {
  SELECT json_patch('{}','{"a":{"bb":{"ccc":[1,{"dddd":null},3]}}}');
} {{{"a":{"bb":{"ccc":[1,{"dddd":null},3]}}}}}

# Example test cases at the end of the RFC-7396 document
do_execsql_test json104-300 {
  SELECT json_patch('{"a":"b"}','{"a":"c"}');
} {{{"a":"c"}}}
do_execsql_test json104-300a {
  SELECT coalesce(json_patch(null,'{"a":"c"}'), 'real-null');
} {{real-null}}
do_execsql_test json104-301 {
  SELECT json_patch('{"a":"b"}','{"b":"c"}');
} {{{"a":"b","b":"c"}}}
do_execsql_test json104-302 {
  SELECT json_patch('{"a":"b"}','{"a":null}');
} {{{}}}
do_execsql_test json104-303 {
  SELECT json_patch('{"a":"b","b":"c"}','{"a":null}');
} {{{"b":"c"}}}
do_execsql_test json104-304 {
  SELECT json_patch('{"a":["b"]}','{"a":"c"}');
} {{{"a":"c"}}}
do_execsql_test json104-305 {
  SELECT json_patch('{"a":"c"}','{"a":["b"]}');
} {{{"a":["b"]}}}
do_execsql_test json104-306 {
  SELECT json_patch('{"a":{"b":"c"}}','{"a":{"b":"d","c":null}}');
} {{{"a":{"b":"d"}}}}
do_execsql_test json104-307 {
  SELECT json_patch('{"a":[{"b":"c"}]}','{"a":[1]}');
} {{{"a":[1]}}}
do_execsql_test json104-308 {
  SELECT json_patch('["a","b"]','["c","d"]');
} {{["c","d"]}}
do_execsql_test json104-309 {
  SELECT json_patch('{"a":"b"}','["c"]');
} {{["c"]}}
do_execsql_test json104-310 {
  SELECT json_patch('{"a":"foo"}','null');
} {{null}}
do_execsql_test json104-310a {
  SELECT coalesce(json_patch('{"a":"foo"}',null), 'real-null');
} {{real-null}}
do_execsql_test json104-311 {
  SELECT json_patch('{"a":"foo"}','"bar"');
} {{"bar"}}
do_execsql_test json104-312 {
  SELECT json_patch('{"e":null}','{"a":1}');
} {{{"e":null,"a":1}}}
do_execsql_test json104-313 {
  SELECT json_patch('[1,2]','{"a":"b","c":null}');
} {{{"a":"b"}}}
do_execsql_test json104-314 {
  SELECT json_patch('{}','{"a":{"bb":{"ccc":null}}}');
} {{{"a":{"bb":{}}}}}


finish_test