You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: baseURL_test.go
    path of file: ./repos/hugo/common/urls
    
    the code of the file until where you have to start completion: // Copyright 2024 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package urls

import (
	"testing"

	qt "github.com/frankban/quicktest"
)

func TestBaseURL(t *testing.T) {
	c := qt.New(t)

	b, err := NewBaseURLFromString("http://example.com/")
	c.Assert(err, qt.IsNil)
	c.Assert(b.String(), qt.Equals, "http://example.com/")

	b, err = NewBaseURLFromString("http://example.com")
	c.Assert(err, qt.IsNil)
	c.Assert(b.String(), qt.Equals, "http://example.com/")
	c.Assert(b.WithPathNoTrailingSlash, qt.Equals, "http://example.com")
	c.Assert(b.BasePath, q
    
func TestBaseURL(t *testing.T) {
	c := qt.New(t)

	b, err := NewBaseURLFromString("http://example.com/")
	c.Assert(err, qt.IsNil)
	c.Assert(b.String(), qt.Equals, "http://example.com/")

	b, err = NewBaseURLFromString("http://example.com")
	c.Assert(err, qt.IsNil)
	c.Assert(b.String(), qt.Equals, "http://example.com/")
	c.Assert(b.WithPathNoTrailingSlash, qt.Equals, "http://example.com")
	c.Assert(b.BasePath, qt.Equals, "/")

	p, err := b.WithProtocol("webcal://")
	c.Assert(err, qt.IsNil)
	c.Assert(p.String(), qt.Equals, "webcal://example.com/")

	p, err = b.WithProtocol("webcal")
	c.Assert(err, qt.IsNil)
	c.Assert(p.String(), qt.Equals, "webcal://example.com/")

	_, err = b.WithProtocol("mailto:")
	c.Assert(err, qt.Not(qt.IsNil))

	b, err = NewBaseURLFromString("mailto:hugo@rules.com")
	c.Assert(err, qt.IsNil)
	c.Assert(b.String(), qt.Equals, "mailto:hugo@rules.com")

	// These are pretty constructed
	p, err = b.WithProtocol("webcal")
	c.Assert(err, qt.IsNil)
	c.Assert(p.String(), qt.Equals, "webcal:hugo@rules.com")

	p, err = b.WithProtocol("webcal://")
	c.Assert(err, qt.IsNil)
	c.Assert(p.String(), qt.Equals, "webcal://hugo@rules.com")

	// Test with "non-URLs". Some people will try to use these as a way to get
	// relative URLs working etc.
	b, err = NewBaseURLFromString("/")
	c.Assert(err, qt.IsNil)
	c.Assert(b.String(), qt.Equals, "/")

	b, err = NewBaseURLFromString("")
	c.Assert(err, qt.IsNil)
	c.Assert(b.String(), qt.Equals, "/")

	// BaseURL with sub path
	b, err = NewBaseURLFromString("http://example.com/sub")
	c.Assert(err, qt.IsNil)
	c.Assert(b.String(), qt.Equals, "http://example.com/sub/")
	c.Assert(b.WithPathNoTrailingSlash, qt.Equals, "http://example.com/sub")
	c.Assert(b.BasePath, qt.Equals, "/sub/")
	c.Assert(b.BasePathNoTrailingSlash, qt.Equals, "/sub")

	b, err = NewBaseURLFromString("http://example.com/sub/")
	c.Assert(err, qt.IsNil)
	c.Assert(b.String(), qt.Equals, "http://example.com/sub/")
	c.Assert(b.HostURL(), qt.Equals, "http://example.com")
}