remove the key if expired, even when found

jwk_client.go

@@ -163,13 +163,13 @@ func (u *memoryMissTracker) Exists(key string) bool {
 	var found bool
 
 	for i, uk := range u.keys {
+		if now.Sub(uk.time) > u.ttl {
+			cutPosition = i
+		}
 		if uk.name == key {
 			found = true
 			break
 		}
-		if now.Sub(uk.time) > u.ttl {
-			cutPosition = i
-		}
 	}
 
 	if cutPosition == -1 {

jwk_client_test.go

@@ -110,15 +110,19 @@ func Test_memoryMissTracker(t *testing.T) {
 		t.Errorf("key1 should be present in list of misses %+v", uks)
 	}
 
-	if len(uks.keys) != 4 {
+	if len(uks.keys) != 3 {
 		t.Errorf("wrong size %+v", uks)
 	}
 
-	if !uks.Exists("key2") {
-		t.Errorf("key2 should be present in list of misses %+v", uks)
+	if !uks.Exists("key3") {
+		t.Errorf("key3 should be present in list of misses %+v", uks)
 	}
 
-	if len(uks.keys) != 3 {
+	if uks.Exists("key2") {
+		t.Errorf("key2 should not be present in list of misses %+v", uks)
+	}
+
+	if len(uks.keys) != 2 {
 		t.Errorf("wrong size %+v", uks)
 	}