time: d,c,dd,ddd,dddd pattern support for parse_format()

vlib/time/time_test.v

@@ -402,37 +402,37 @@ fn test_parse_ordinal_weekday_d() {
 	dt := '0 Jan 01 00:00:00 1970'
 	tm := time.parse_format(dt, format)!
 	tm_s := tm.custom_format(format)
-	assert tm_s != dt
+	assert tm_s == '4 Jan 01 00:00:00 1970'
 }
 
 fn test_parse_ordinal_weekday_c() {
 	format := 'd MMM DD HH:mm:ss YYYY'
 	dt := '7 Jan 01 00:00:00 1970'
 	tm := time.parse_format(dt, format)!
 	tm_s := tm.custom_format(format)
-	assert tm_s != dt
+	assert tm_s == '4 Jan 01 00:00:00 1970'
 }
 
 fn test_parse_two_letters_weekday() {
 	format := 'dd MMM DD HH:mm:ss YYYY'
 	dt := 'Su Jan 01 00:00:00 1970'
 	tm := time.parse_format(dt, format)!
 	tm_s := tm.custom_format(format)
-	assert tm_s != dt
+	assert tm_s == 'Th Jan 01 00:00:00 1970'
 }
 
 fn test_parse_three_letters_weekday() {
 	format := 'ddd MMM DD HH:mm:ss YYYY'
 	dt := 'Sun Jan 01 00:00:00 1970'
 	tm := time.parse_format(dt, format)!
 	tm_s := tm.custom_format(format)
-	assert tm_s != dt
+	assert tm_s == 'Thu Jan 01 00:00:00 1970'
 }
 
 fn test_parse_weekday() {
 	format := 'dddd MMM DD HH:mm:ss YYYY'
 	dt := 'Sunday Jan 01 00:00:00 1970'
 	tm := time.parse_format(dt, format)!
 	tm_s := tm.custom_format(format)
-	assert tm_s != dt
+	assert tm_s == 'Thursday Jan 01 00:00:00 1970'
 }