regex for at time accepts time without leading zeros (#56)

README.md

@@ -57,6 +57,12 @@ func main() {
     s2.Every(1).Month(time.Now().Day()).Do(task)
     s2.Every(2).Months(15).Do(task)
 
+    // check for errors
+    _, err := s2.Every(1).Day().At("bad-time").Do(task)
+    if err != nil {
+        log.Fatalf("error creating job: %v", err)
+    }
+
     // Do jobs with params
     s2.Every(1).Second().Do(taskWithParams, 1, "hello")
 
@@ -80,6 +86,7 @@ func main() {
     s2.Every(1).Day().At("10:30").Do(task)
     s2.Every(1).Monday().At("18:30").Do(task)
     s2.Every(1).Tuesday().At("18:30:59").Do(task)
+    s2.Every(1).Wednesday().At("1:01").Do(task)
 
     // Begin job at a specific date/time. 
     // Attention: scheduler timezone has precedence over job's timezone!

gocron.go

@@ -33,8 +33,8 @@ var (
 
 // regex patterns for supported time formats
 var (
-	timeWithSeconds    = regexp.MustCompile(`(?m)^\d\d:\d\d:\d\d$`)
-	timeWithoutSeconds = regexp.MustCompile(`(?m)^\d\d:\d\d$`)
+	timeWithSeconds    = regexp.MustCompile(`(?m)^\d{1,2}:\d\d:\d\d$`)
+	timeWithoutSeconds = regexp.MustCompile(`(?m)^\d{1,2}:\d\d$`)
 )
 
 type timeUnit int

gocron_test.go

@@ -24,6 +24,13 @@ func TestFormatTime(t *testing.T) {
 			wantMin:  18,
 			wantErr:  false,
 		},
+		{
+			name:     "normal - no leading hour zeros",
+			args:     "6:08",
+			wantHour: 6,
+			wantMin:  8,
+			wantErr:  false,
+		},
 		{
 			name:     "normal_with_second",
 			args:     "06:18:01",
@@ -32,6 +39,14 @@ func TestFormatTime(t *testing.T) {
 			wantSec:  1,
 			wantErr:  false,
 		},
+		{
+			name:     "normal_with_second - no leading hour zeros",
+			args:     "6:08:01",
+			wantHour: 6,
+			wantMin:  8,
+			wantSec:  1,
+			wantErr:  false,
+		},
 		{
 			name:     "not_a_number",
 			args:     "e:18",