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document_test.go
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document_test.go
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package dom
import (
"strings"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"golang.org/x/net/html"
"github.com/crhntr/dom/spec"
)
func TestDocument_NodeType(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`
document, _ := parseDocument(t, textHTML, "")
assert.Equal(t, spec.NodeTypeDocument, document.NodeType())
}
func TestDocument_CloneNode(t *testing.T) {
t.Run("deep", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`
document, _ := parseDocument(t, textHTML, "")
result := document.CloneNode(true)
copied, ok := result.(*Document)
assert.True(t, ok, "correct type")
assert.False(t, copied.node == document.node, "not the same *html.NewNode")
assert.NotNil(t, copied.node.FirstChild)
assert.False(t, copied.node.FirstChild == document.node.FirstChild, "not the same child *html.NewNode")
})
t.Run("not deep", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`
document, _ := parseDocument(t, textHTML, "")
result := document.CloneNode(false)
copied, ok := result.(*Document)
assert.True(t, ok, "correct type")
assert.Nil(t, copied.node.FirstChild)
assert.False(t, copied.node == document.node, "not the same *html.NewNode")
})
}
func TestDocument_IsSameNode(t *testing.T) {
t.Run("same", func(t *testing.T) {
// language=html
parsedDocument, err := html.Parse(strings.NewReader(`<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`))
require.NoError(t, err)
document := &Document{node: parsedDocument}
require.True(t, document.IsSameNode(document))
parsedDocument2, err := html.Parse(strings.NewReader(`<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`))
require.NoError(t, err)
require.False(t, document.IsSameNode(&Document{node: parsedDocument2}))
})
t.Run("same html different address", func(t *testing.T) {
// language=html
in := `<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`
parsedDocument1, err := html.Parse(strings.NewReader(in))
require.NoError(t, err)
parsedDocument2, err := html.Parse(strings.NewReader(in))
require.NoError(t, err)
require.False(t, (&Document{node: parsedDocument1}).IsSameNode(&Document{node: parsedDocument2}))
})
t.Run("receiver node is nil", func(t *testing.T) {
// language=html
in := `<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`
parsedDocument, err := html.Parse(strings.NewReader(in))
require.NoError(t, err)
require.False(t, (&Document{node: nil}).IsSameNode(&Document{node: parsedDocument}))
})
t.Run("param is nil", func(t *testing.T) {
// language=html
in := `<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`
parsedDocument, err := html.Parse(strings.NewReader(in))
require.NoError(t, err)
require.False(t, (&Document{node: parsedDocument}).IsSameNode(nil))
})
t.Run("param node is nil", func(t *testing.T) {
// language=html
in := `<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`
parsedDocument, err := html.Parse(strings.NewReader(in))
require.NoError(t, err)
require.False(t, (&Document{node: parsedDocument}).IsSameNode(&Document{node: nil}))
})
}
func TestDocument_GetElementsByTagName(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span id="a"></span><span id="b"></span></body</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
elements := document.GetElementsByTagName("span")
assert.Equal(t, elements.Length(), 2)
}
func TestDocument_GetElementsByClassName(t *testing.T) {
t.Run("nothing found", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<span id="x1"></span>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.GetElementsByClassName("nothing-has-this-class")
require.Nil(t, result)
})
t.Run("element found", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<span id="x1" class="find-me"></span>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.GetElementsByClassName("find-me")
require.Equal(t, 1, result.Length())
assert.Equal(t, "x1", result.Item(0).ID())
})
t.Run("multiple elements found", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<span id="x1" class="find-me"></span>
<span id="x2" class="find-me"></span>
<div>
<span id="x3" class="find-me"></span>
</div>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.GetElementsByClassName("find-me")
require.Equal(t, 3, result.Length())
assert.Equal(t, "x1", result.Item(0).ID())
assert.Equal(t, "x2", result.Item(1).ID())
assert.Equal(t, "x3", result.Item(2).ID())
})
t.Run("embedded element found", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<div id="x1" class="find-me">
<div id="x2" class="find-me">
<div id="x3" class="find-me"></div>
</div>
</div>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.GetElementsByClassName("find-me")
require.Equal(t, 3, result.Length())
assert.Equal(t, "x1", result.Item(0).ID())
assert.Equal(t, "x2", result.Item(1).ID())
assert.Equal(t, "x3", result.Item(2).ID())
})
t.Run("other class in in attribute before", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<span id="x1" class="other find-me"></span>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.GetElementsByClassName("find-me")
require.Equal(t, 1, result.Length())
assert.Equal(t, "x1", result.Item(0).ID())
})
t.Run("other class in in attribute after", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<span id="x1" class="find-me other"></span>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.GetElementsByClassName("find-me")
require.Equal(t, 1, result.Length())
assert.Equal(t, "x1", result.Item(0).ID())
})
t.Run("extra whitespace", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<span id="x1" class=" find-me "></span>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.GetElementsByClassName("find-me")
require.Equal(t, 1, result.Length())
assert.Equal(t, "x1", result.Item(0).ID())
})
t.Run("multiple classes found", func(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<span id="x1" class="find-me other"></span>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.GetElementsByClassName("find-me")
require.Equal(t, 1, result.Length())
})
}
func TestDocument_QuerySelector(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<div id="1">
<span></span>
<span data-find-me="x" id="x1"></span>
</div>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.QuerySelector(`#1 [data-find-me="x"]`)
assert.Equal(t, "x1", result.ID())
shouldNotBeFound := document.QuerySelector(`#banana-banana-banana`)
assert.Nil(t, shouldNotBeFound)
}
func TestDocument_QuerySelectorAll(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<div id="1">
<span></span>
<span data-find-me="x" id="x1"></span>
<span data-find-me="y" id="x2"></span>
</div>
<span data-find-me="NOPE" id="x3"></span>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
result := document.QuerySelectorAll(`#1 [data-find-me]`)
require.Equal(t, result.Length(), 2)
assert.Equal(t, "x1", result.Item(0).ID())
assert.Equal(t, "x2", result.Item(1).ID())
}
func TestDocument_Contains(t *testing.T) {
t.Run("a child", func(t *testing.T) {
// language=html
parsedDocument, err := html.Parse(strings.NewReader(`<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`))
require.NoError(t, err)
document := Document{
node: parsedDocument,
}
require.True(t, document.Contains(&Element{node: parsedDocument.LastChild.LastChild}))
})
t.Run("some other node", func(t *testing.T) {
// language=html
parsedDocument, err := html.Parse(strings.NewReader(`<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`))
require.NoError(t, err)
document := Document{
node: parsedDocument,
}
require.False(t, document.Contains(&Element{node: &html.Node{}}))
})
t.Run("nil", func(t *testing.T) {
// language=html
parsedDocument, err := html.Parse(strings.NewReader(`<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`))
require.NoError(t, err)
document := Document{
node: parsedDocument,
}
require.False(t, document.Contains(&Element{node: nil}))
})
}
func TestDocument_TextContent(t *testing.T) {
// language=html
textHTML := `<!DOCTYPE html>
<html lang="us-en">
<head><title>Get Elements By Class Name</title></head>
<body>
<p>Hello, world!</p>
</body>
</html>`
parsedDocument, err := html.Parse(strings.NewReader(textHTML))
require.NoError(t, err)
document := &Document{node: parsedDocument}
require.Zero(t, document.TextContent())
}
func TestDocument_CreateElement(t *testing.T) {
// language=html
parsedDocument, err := html.Parse(strings.NewReader(`<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><span></span></body</html>`))
require.NoError(t, err)
exp := parsedDocument.FirstChild.NextSibling.LastChild.FirstChild
exp.Parent = nil
var document *Document
got := document.CreateElement("SPAN").(*Element).node
assert.Equal(t, exp, got)
}
func TestDocument_CreateElementIs(t *testing.T) {
// language=html
parsedDocument, err := html.Parse(strings.NewReader(`<!DOCTYPE html><html lang="us-en"><head><title></title></head><body><div is="fruit"></div></body</html>`))
require.NoError(t, err)
exp := parsedDocument.FirstChild.NextSibling.LastChild.FirstChild
exp.Parent = nil
var document *Document
got := document.CreateElementIs("div", "fruit").(*Element).node
assert.Equal(t, exp, got)
}
func TestDocument_CreateTextNode(t *testing.T) {
// language=html
parsedDocument, err := html.Parse(strings.NewReader(`<!DOCTYPE html><html lang="us-en"><head><title>peach</title></head><body></body</html>`))
require.NoError(t, err)
exp := parsedDocument.FirstChild.NextSibling.FirstChild.FirstChild.FirstChild
exp.Parent = nil
var document *Document
got := document.CreateTextNode("peach").(*Text).node
assert.Equal(t, exp, got)
}