test: add unit test case for email notifier

internal/pkg/core/notifier/providers/email/email_test.go

@@ -0,0 +1,51 @@
+package email_test
+
+import (
+	"os"
+	"strconv"
+	"testing"
+
+	notifierEmail "github.com/usual2970/certimate/internal/pkg/core/notifier/providers/email"
+)
+
+/*
+Shell command to run this test:
+
+	CERTIMATE_NOTIFIER_EMAIL_SMTPPORT=465 \
+	CERTIMATE_NOTIFIER_EMAIL_SMTPTLS=true \
+	CERTIMATE_NOTIFIER_EMAIL_SMTPHOST="smtp.example.com" \
+	CERTIMATE_NOTIFIER_EMAIL_USERNAME="your-username" \
+	CERTIMATE_NOTIFIER_EMAIL_PASSWORD="your-password" \
+	CERTIMATE_NOTIFIER_EMAIL_SENDERADDRESS="sender@example.com" \
+	CERTIMATE_NOTIFIER_EMAIL_RECEIVERADDRESS="receiver@example.com" \
+	go test -v -run TestNotify email_test.go
+*/
+func TestNotify(t *testing.T) {
+	smtpPort, err := strconv.ParseInt(os.Getenv("CERTIMATE_NOTIFIER_EMAIL_SMTPPORT"), 10, 32)
+	if err != nil {
+		t.Errorf("invalid envvar: %+v", err)
+		panic(err)
+	}
+
+	smtpTLS, err := strconv.ParseBool(os.Getenv("CERTIMATE_NOTIFIER_EMAIL_SMTPTLS"))
+	if err != nil {
+		t.Errorf("invalid envvar: %+v", err)
+		panic(err)
+	}
+
+	res, err := notifierEmail.New(&notifierEmail.EmailNotifierConfig{
+		SmtpHost:        os.Getenv("CERTIMATE_NOTIFIER_EMAIL_SMTPHOST"),
+		SmtpPort:        int32(smtpPort),
+		SmtpTLS:         smtpTLS,
+		Username:        os.Getenv("CERTIMATE_NOTIFIER_EMAIL_USERNAME"),
+		Password:        os.Getenv("CERTIMATE_NOTIFIER_EMAIL_PASSWORD"),
+		SenderAddress:   os.Getenv("CERTIMATE_NOTIFIER_EMAIL_SENDERADDRESS"),
+		ReceiverAddress: os.Getenv("CERTIMATE_NOTIFIER_EMAIL_RECEIVERADDRESS"),
+	})
+	if err != nil {
+		t.Errorf("invalid envvar: %+v", err)
+		panic(err)
+	}
+
+	t.Logf("notify result: %v", res)
+}