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package web_test
import (
"errors"
"testing"
"go.arsenm.dev/scope/search/web"
)
const (
ErrInNone = iota
ErrInInit
ErrInLink
ErrInTitle
ErrInDesc
)
var (
ErrInit = errors.New("error in init")
ErrLink = errors.New("error in link")
ErrTitle = errors.New("error in title")
ErrDesc = errors.New("error in description")
)
type TestEngine struct {
errIn int
name string
query string
userAgent string
page int
results []TestResult
}
type TestResult struct {
title string
link string
desc string
}
func (te *TestEngine) SetKeyword(query string) {
te.query = query
}
func (te *TestEngine) SetUserAgent(ua string) {
te.userAgent = ua
}
func (te *TestEngine) SetPage(page int) {
te.page = page
}
func (te *TestEngine) Init() error {
if te.errIn == ErrInInit {
return ErrInit
}
te.results = append(te.results,
TestResult{
"Google",
"https://www.google.com",
"Google search engine",
},
TestResult{
"Wikipedia",
"https://wikipedia.org",
"Online wiki encyclopedia",
},
TestResult{
"Reddit",
"https://reddit.com",
"600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars 600 chars ",
},
TestResult{
"Example",
"https://example.com",
"",
},
)
return nil
}
func (te *TestEngine) Each(eachCb func(int) error) error {
for index := range te.results {
if err := eachCb(index); err != nil {
return err
}
}
return nil
}
func (te *TestEngine) Title(i int) (string, error) {
if te.errIn == ErrInTitle {
return "", ErrTitle
}
return te.results[i].title, nil
}
func (te *TestEngine) Link(i int) (string, error) {
if te.errIn == ErrInLink {
return "", ErrLink
}
return te.results[i].link, nil
}
func (te *TestEngine) Desc(i int) (string, error) {
if te.errIn == ErrInDesc {
return "", ErrDesc
}
return te.results[i].desc, nil
}
func (te *TestEngine) Name() string {
return te.name
}
func TestSearch(t *testing.T) {
engine := &TestEngine{name: "one"}
results, err := web.Search(
web.Options{
Keyword: "test keyword",
UserAgent: "TestEngine/0.0.0",
Page: 0,
},
engine,
&TestEngine{name: "two"},
)
if err != nil {
t.Fatalf("Error in Search(): %s", err)
}
if len(results) < len(engine.results)-1 {
t.Fatalf(
"Expected %d results, got %d",
len(engine.results),
len(results),
)
}
for index, result := range results {
if engine.results[index].desc == "" {
continue
}
if result.Title != engine.results[index].title {
t.Fatalf(
"Result %d: expected title %s, got %s",
index,
engine.results[index].title,
result.Title,
)
} else if result.Link != engine.results[index].link {
t.Fatalf(
"Result %d: expected link %s, got %s",
index,
engine.results[index].link,
result.Link,
)
} else if result.Desc != engine.results[index].desc &&
len(engine.results[index].desc) <= 500 {
t.Fatalf(
"Result %d: expected description %s, got %s",
index,
engine.results[index].desc,
result.Desc,
)
}
}
}
func TestSearchError(t *testing.T) {
engines := []*TestEngine{
{errIn: ErrInInit},
{errIn: ErrInTitle},
{errIn: ErrInLink},
{errIn: ErrInDesc},
}
for index, engine := range engines {
_, err := web.Search(
web.Options{
Keyword: "test keyword",
UserAgent: "TestEngine/0.0.0",
Page: 0,
},
engine,
)
if err == nil {
t.Fatalf("Expected error in engine %d, received nil", index)
} else if err != ErrTitle && engines[index].errIn == ErrInTitle {
t.Fatalf("Expected error in title (index %d), received %s", index, err)
} else if err != ErrLink && engines[index].errIn == ErrInLink {
t.Fatalf("Expected error in link (index %d), received %s", index, err)
} else if err != ErrDesc && engines[index].errIn == ErrInDesc {
t.Fatalf("Expected error in description (index %d), received %s", index, err)
} else if err != ErrInit && engines[index].errIn == ErrInInit {
t.Fatalf("Expected error in init (index %d), received %s", index, err)
}
}
}