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/c_programmers.result
+++ b/tests_dir/c_programmers.result
@@ -1,6 +1 @@
-id,name,chief,age,skill
-2,john,1,30,C
-7,alia,1,28,C
-5,duncan,4,30,C
-0,jack,0,22,C
-4,eve,0,25,C
+{"content": [[5, "duncan", 4, 30, "C"], [0, "jack", 0, 22, "C"], [4, "eve", 0, 25, "C"], [2, "john", 1, 30, "C"], [7, "alia", 1, 28, "C"]], "header": ["id", "name", "chief", "age", "skill"]}