update a comment

alicebob · alicebob · commit 34d9a7a3c129 · 2020-05-27T14:39:25.000+02:00
There was an issue with confusion about this a while ago.
diff --git a/direct.go b/direct.go
@@ -390,7 +390,8 @@ func (db *RedisDB) Unlink(k string) bool {
 
 // TTL is the left over time to live. As set via EXPIRE, PEXPIRE, EXPIREAT,
 // PEXPIREAT.
-// 0 if not set.
+// Note: this direct function returns 0 if there is no TTL set, unlike redis,
+// which returns -1.
 func (m *Miniredis) TTL(k string) time.Duration {
 	return m.DB(m.selectedDB).TTL(k)
 }

Original file line number	Diff line number	Diff line change
`@@ -390,7 +390,8 @@ func (db *RedisDB) Unlink(k string) bool {`
`390`	`390`
`391`	`391`	`// TTL is the left over time to live. As set via EXPIRE, PEXPIRE, EXPIREAT,`
`392`	`392`	`// PEXPIREAT.`
`393`		`-// 0 if not set.`
	`393`	`+// Note: this direct function returns 0 if there is no TTL set, unlike redis,`
	`394`	`+// which returns -1.`
`394`	`395`	`func (m *Miniredis) TTL(k string) time.Duration {`
`395`	`396`	`return m.DB(m.selectedDB).TTL(k)`
`396`	`397`	`}`