test(channel): add Pusher interface and factory tests

Author: priyanshujain

channel/push_test.go

@@ -0,0 +1,39 @@
+package channel
+
+import (
+	"context"
+	"testing"
+
+	"github.com/priyanshujain/openbotkit/source/scheduler"
+)
+
+func TestNewPusherUnsupported(t *testing.T) {
+	_, err := NewPusher("unknown", scheduler.ChannelMeta{})
+	if err == nil {
+		t.Fatal("expected error for unsupported channel type")
+	}
+}
+
+func TestTelegramPusherImplementsInterface(t *testing.T) {
+	var _ Pusher = (*TelegramPusher)(nil)
+}
+
+func TestSlackPusherImplementsInterface(t *testing.T) {
+	var _ Pusher = (*SlackPusher)(nil)
+}
+
+type mockPusher struct {
+	messages []string
+}
+
+func (m *mockPusher) Push(_ context.Context, message string) error {
+	m.messages = append(m.messages, message)
+	return nil
+}
+
+func TestMockPusherImplementsInterface(t *testing.T) {
+	var p Pusher = &mockPusher{}
+	if err := p.Push(context.Background(), "test"); err != nil {
+		t.Fatal(err)
+	}
+}