fix: make range picker show actual range with ceiled to date (fix #175)

utils/date_test.go

@@ -0,0 +1,30 @@
+package utils
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+	"time"
+)
+
+func TestDate_Ceil(t *testing.T) {
+	tests := []struct {
+		in  string
+		out string
+	}{
+		{
+			"02 Jan 06 15:04 MST",
+			"03 Jan 06 00:00 MST",
+		},
+		{
+			"03 Jan 06 00:00 MST",
+			"03 Jan 06 00:00 MST",
+		},
+	}
+
+	for _, test := range tests {
+		inDate, _ := time.Parse(time.RFC822, test.in)
+		outDate, _ := time.Parse(time.RFC822, test.out)
+		out := CeilDate(inDate)
+		assert.Equal(t, outDate, out)
+	}
+}