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// SPDX-FileCopyrightText: 2026 Stefan Majewsky <majewsky@gmx.net>
// SPDX-License-Identifier: Apache-2.0
package pgruntime
import (
"net/url"
"strings"
"testing"
"go.xyrillian.de/gg/assert"
)
func TestParseConnectionTargetSuccess(t *testing.T) {
testCases := map[string]ConnectionTarget{
// minimal case: just the required fields are set
`postgresql://alice@localhost/bookstore`: {
HostName: "localhost",
UserName: "alice",
DatabaseName: "bookstore",
},
// maximal case: all required fields are set
`postgres://alice:swordfish@db.example.com:5432/bookstore?sslmode=prefer&application_name=frontdesk`: {
HostName: "db.example.com",
Port: "5432",
UserName: "alice",
Password: "swordfish",
DatabaseName: "bookstore",
ConnectionOptions: "sslmode=prefer&application_name=frontdesk",
},
}
for input, expected := range testCases {
t.Run(input, func(t *testing.T) {
u, err := url.Parse(input)
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
parsed, err := ParseConnectionTargetFromURL(u)
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
assert.Equal(t, parsed, expected)
serialized, err := parsed.IntoURL()
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
// IntoURL() always uses postgres://, so this is not always an exact roundtrip
assert.Equal(t, serialized.String(), strings.ReplaceAll(input, "postgresql:", "postgres:"))
})
}
}
func TestParseConnectionTargetFailure(t *testing.T) {
testCases := map[string]string{
`https://alice@db.example.com/foo?sslmode=prefer`: `expected scheme "postgres" or "postgresql", but got "https"`,
`postgres:foo?sslmode=prefer`: `expected authority component, but got rootless path "foo"`,
`postgres://alice@db.example.com/foo#sslmode=prefer`: `unexpected fragment "sslmode=prefer"`,
`postgres://alice@db.example.com::5432/foo?sslmode=prefer`: `malformed host "db.example.com::5432"`,
`postgres://alice@db.example.com/foo/bar?sslmode=prefer`: `malformed database name "foo/bar"`,
`postgres://alice@db.example.com/foo?sslmode=prefer;foo=bar`: `malformed connection options: invalid semicolon separator in query`,
}
for input, expected := range testCases {
t.Run(input, func(t *testing.T) {
u, err := url.Parse(input)
if !assert.ErrEqual(t, err, nil) {
t.FailNow()
}
_, err = ParseConnectionTargetFromURL(u)
assert.ErrEqual(t, err, "in ParseConnectionTargetFromURL: "+expected)
})
}
}
func TestSerializeConnectionOptions(t *testing.T) {
osHostname = func() (string, error) {
return "bar", nil
}
ct := ConnectionTarget{
HostName: "localhost",
UserName: "alice",
DatabaseName: "bookstore",
}
// cannot merge ConnectionOptions if the string part is malformed
ct.ConnectionOptions = `sslmode=prefer;foo=bar`
ct.ExtraConnectionOptions = url.Values{"application_name": {"frontdesk"}}
ct.ApplicationName = ""
_, err := ct.IntoURL()
assert.ErrEqual(t, err, `in ConnectionTarget.IntoURL: malformed connection options: invalid semicolon separator in query`)
// not really a merge at all
ct.ConnectionOptions = ""
ct.ExtraConnectionOptions = nil
ct.ApplicationName = ""
u, err := ct.IntoURL()
if assert.ErrEqual(t, err, nil) {
assert.Equal(t, u.RawQuery, "")
}
ct.ApplicationName = "foo"
u, err = ct.IntoURL()
if assert.ErrEqual(t, err, nil) {
assert.Equal(t, u.RawQuery, `fallback_application_name=foo%40bar`)
}
// successful trivial merges
ct.ConnectionOptions = `sslmode=prefer`
ct.ExtraConnectionOptions = nil
ct.ApplicationName = ""
u, err = ct.IntoURL()
if assert.ErrEqual(t, err, nil) {
assert.Equal(t, u.RawQuery, `sslmode=prefer`)
}
ct.ApplicationName = "foo"
u, err = ct.IntoURL()
if assert.ErrEqual(t, err, nil) {
assert.Equal(t, u.RawQuery, `fallback_application_name=foo%40bar&sslmode=prefer`)
}
ct.ConnectionOptions = ""
ct.ExtraConnectionOptions = url.Values{"application_name": {"frontdesk"}}
ct.ApplicationName = ""
u, err = ct.IntoURL()
if assert.ErrEqual(t, err, nil) {
assert.Equal(t, u.RawQuery, `application_name=frontdesk`)
}
ct.ApplicationName = "foo"
u, err = ct.IntoURL()
if assert.ErrEqual(t, err, nil) {
assert.Equal(t, u.RawQuery, `application_name=frontdesk&fallback_application_name=foo%40bar`)
}
// successful complex merge
ct.ConnectionOptions = `sslmode=prefer`
ct.ExtraConnectionOptions = url.Values{"application_name": {"frontdesk"}}
ct.ApplicationName = ""
u, err = ct.IntoURL()
if assert.ErrEqual(t, err, nil) {
assert.Equal(t, u.RawQuery, `application_name=frontdesk&sslmode=prefer`)
}
ct.ApplicationName = "foo"
u, err = ct.IntoURL()
if assert.ErrEqual(t, err, nil) {
assert.Equal(t, u.RawQuery, `application_name=frontdesk&fallback_application_name=foo%40bar&sslmode=prefer`)
}
}
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