Keep tests in json format

So the results are typed
2020-08-24 18:37:55 +02:00
parent d592cc3050
commit 4d280e02b0
55 changed files with 55 additions and 329 deletions
--- a/tests_dir/people_rename_select.result
+++ b/tests_dir/people_rename_select.result
@@ -1,5 +1 @@
-i,name,chief,age
-0,jack,0,22
-2,john,1,30
-4,eve,0,25
-6,paul,4,30
+{"content": [[4, "eve", 0, 25], [6, "paul", 4, 30], [2, "john", 1, 30], [0, "jack", 0, 22]], "header": ["i", "name", "chief", "age"]}