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mailer_test.go
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mailer_test.go
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package mailer
import (
"html/template"
"net/smtp"
"reflect"
"testing"
)
const testMailHeadersOut = "To: [email protected],[email protected]\r\nFrom: [email protected]\r\n" + GlobalHeaders
func init() {
Debug = true
}
func Test_mailHeaders(t *testing.T) {
tests := []struct {
name string
headers []Header
want []byte
}{
{
"Empty",
nil,
[]byte(GlobalHeaders),
},
{
"Mixed entries",
[]Header{
{"to", []string{"[email protected]", "[email protected]"}},
{"from", []string{"[email protected]"}},
{"subject", nil},
},
[]byte(testMailHeadersOut),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := mailHeaders(tt.headers).Bytes(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("New() = \n%swant\n%s", got, tt.want)
}
})
}
}
const testTemplate = `{{ define "tester" }}
<html>
<body>
<h1>Hello, World!</h1>
<p>
This is the unit tester from <a href="{{ .URL }}">moapis/mailer</a>.
A functional wrapper around the standard Go "net/smtp" and "html/template" packages.
</p>
</body>
</html>
{{ end }}`
var testTmplData = struct{ URL string }{"https://github.com/moapis/mailer"}
func TestNew(t *testing.T) {
type args struct {
tmpl *template.Template
addr string
from string
auth smtp.Auth
}
tests := []struct {
name string
args args
want *Mailer
}{
{
"TestNew",
args{
tmpl: template.Must(template.New("test").Parse(testTemplate)),
addr: "smtp.example.com:578",
from: "[email protected]",
auth: nil,
},
&Mailer{
tmpl: template.Must(template.New("test").Parse(testTemplate)),
addr: "smtp.example.com:578",
from: "[email protected]",
auth: nil,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := New(tt.args.tmpl, tt.args.addr, tt.args.from, tt.args.auth); !reflect.DeepEqual(got, tt.want) {
t.Errorf("New() = %v, want %v", got, tt.want)
}
})
}
}
func TestMailer_Send(t *testing.T) {
type fields struct {
tmpl *template.Template
addr string
from string
auth smtp.Auth
}
type args struct {
headers []Header
tmplName string
data interface{}
recipients []string
}
tests := []struct {
name string
fields fields
args args
wantErr bool
}{
{
"Template error",
fields{
tmpl: template.Must(template.New("test").Parse(testTemplate)),
addr: "test.mailu.io:578",
from: "[email protected]",
auth: nil,
},
args{
headers: nil,
tmplName: "spanac",
data: testTmplData,
recipients: []string{"[email protected]", "[email protected]"},
},
true,
},
{
"Send error",
fields{
tmpl: template.Must(template.New("test").Parse(testTemplate)),
addr: "test.mailu.io:587",
from: "[email protected]",
auth: nil,
},
args{
headers: nil,
tmplName: "tester",
data: testTmplData,
recipients: []string{"[email protected]", "[email protected]"},
},
true,
},
{
"Send success",
fields{
tmpl: template.Must(template.New("test").Parse(testTemplate)),
addr: "test.mailu.io:587",
from: "[email protected]",
auth: smtp.PlainAuth("", "[email protected]", "letmein", "test.mailu.io"),
},
args{
headers: []Header{
{"to", []string{"[email protected]", "[email protected]"}},
{"subject", []string{"moapis/mailer: Unit tests"}},
},
tmplName: "tester",
data: testTmplData,
recipients: []string{"[email protected]", "[email protected]"},
},
false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
m := &Mailer{
tmpl: tt.fields.tmpl,
addr: tt.fields.addr,
from: tt.fields.from,
auth: tt.fields.auth,
}
if err := m.Send(tt.args.headers, tt.args.tmplName, tt.args.data, tt.args.recipients...); (err != nil) != tt.wantErr {
t.Errorf("Mailer.Send() error = %v, wantErr %v", err, tt.wantErr)
}
})
}
}