update log formatting

tests/testutil.sh

@@ -122,19 +122,19 @@ function expect_fail {
 }
 
 function log_info {
-    printf "[INFO]\t$1\n"
+    printf "[ INFO ]\t$1\n"
 }
 
 function log_test {
-    printf "$(fmt_cyan [TEST])\t$1\n"
+    printf "$(fmt_cyan '[ TEST ]')\t\t$1\n"
 }
 
 function log_ok {
-    printf "$(fmt_green [OK])\t"
+    printf "$(fmt_green '[  OK  ]')\t"
 }
 
 function log_fail {
-    printf "$(fmt_red [FAIL])\t"
+    printf "$(fmt_red '[ FAIL ]')\t"
 }
 
 function fmt_red {