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parser_test.go
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parser_test.go
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package hero
import (
"io/ioutil"
"log"
"os"
"path/filepath"
"reflect"
"runtime"
"strings"
"testing"
)
var rootDir string
const indexHTML = `
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<%@ body { %>
<% } %>
</body>
</html>
`
const itemHTML = `
<div>
<a href="/user/<%= user %>">
<%== user %>
</a>
</div>
`
const listHTML = `
<%: func UserList(userList []string, buffer *bytes.Buffer) %>
<%!
func Add(a, b int) int {
return a + b
}
%>
<%~ "index.html" %>
<%@ body { %>
<%# this is note %>
<% for _, user := range userList { %>
<%+ "item.html" %>
<% } %>
<% } %>
`
const listToWriterHTML = `
<%: func UserListToWriter(userList []string, w io.Writer) %>
<%~ "index.html" %>
<%@ body { %>
<%# this is note %>
<% for _, user := range userList { %>
<%+ "item.html" %>
<% } %>
<% } %>
`
const listToWriterWithResultHTML = `
<%: func UserListToWriterWithResult(userList []string, w io.Writer) (n int, err error) %>
<%~ "index.html" %>
<%@ body { %>
<%# this is note %>
<% for _, user := range userList { %>
<%+ "item.html" %>
<% } %>
<% } %>
`
func init() {
if runtime.GOOS != "windows" {
rootDir = "/tmp/gohero"
} else {
rootDir = `C:\tmp\gohero`
}
_, err := os.Stat(rootDir)
if !os.IsNotExist(err) {
if err = os.RemoveAll(rootDir); err != nil {
log.Panic(err)
}
}
if err = os.Mkdir(rootDir, os.ModePerm); err != nil {
log.Panic(err)
}
items := []struct {
name string
content string
}{
{"index.html", indexHTML},
{"item.html", itemHTML},
{"list.html", listHTML},
{"listwriter.html", listToWriterHTML},
{"listwriterresult.html", listToWriterWithResultHTML},
}
for _, item := range items {
err = ioutil.WriteFile(
filepath.Join(rootDir, item.name),
[]byte(item.content),
os.ModePerm,
)
if err != nil {
log.Panic(err)
}
}
}
func TestNewNode(t *testing.T) {
var n *node
cases := []struct {
t uint8
chunk []byte
}{
{TypeCode, []byte{1, 2}},
{TypeExtend, []byte{3, 4}},
{TypeEscapedValue, []byte{5, 6}},
}
for _, c := range cases {
n = newNode(c.t, c.chunk)
if n.t != c.t || !reflect.DeepEqual(n.chunk.Bytes(), c.chunk) ||
n.children == nil || len(n.children) != 0 {
t.Fail()
}
}
}
func TestSplitByEndBlock(t *testing.T) {
cases := []struct {
in []byte
bs1 []byte
bs2 []byte
}{
{in: []byte("hello<% } %>world"), bs1: []byte("hello"), bs2: []byte("world")},
{in: []byte(" a <% } %> b "), bs1: []byte(" a "), bs2: []byte(" b ")},
}
for _, c := range cases {
if bs1, bs2 := splitByEndBlock(c.in); !reflect.DeepEqual(c.bs1, bs1) ||
!reflect.DeepEqual(c.bs2, bs2) {
t.Fail()
}
}
}
func buildTree() *node {
root := newNode(TypeRoot, nil)
root.insert(rootDir, "list.html", []byte(listHTML))
return root
}
func testList(root *node, t *testing.T) {
var (
child *node
content string
)
child = root.children[0]
content = strings.TrimSpace(child.chunk.String())
if child.t != TypeDefinition ||
content != "func UserList(userList []string, buffer *bytes.Buffer)" {
t.Fail()
}
child = root.children[1]
content = strings.TrimSpace(child.chunk.String())
if child.t != TypeImport || content != `func Add(a, b int) int {
return a + b
}` {
t.Fail()
}
child = root.children[2]
content = strings.TrimSpace(child.chunk.String())
if child.t != TypeExtend || content != filepath.Join(rootDir, "index.html") {
t.Fail()
}
child = root.children[3]
content = strings.TrimSpace(child.chunk.String())
if child.t != TypeBlock || content != "body" || len(child.children) != 4 {
t.Fail()
}
include := child.children[2]
if include.t != TypeInclude ||
include.chunk.String() != filepath.Join(rootDir, "item.html") ||
len(include.children) != 0 {
t.Fail()
}
}
func TestInsert(t *testing.T) {
root := buildTree()
testList(root, t)
}
func TestChildrenByType(t *testing.T) {
root := buildTree()
var children []*node
children = root.childrenByType(TypeHTML)
if len(children) > 0 {
t.Fail()
}
children = root.childrenByType(TypeDefinition)
content := strings.TrimSpace(children[0].chunk.String())
if len(children) != 1 || children[0].t != TypeDefinition ||
content != "func UserList(userList []string, buffer *bytes.Buffer)" {
t.Fail()
}
}
func TestFindBlockByName(t *testing.T) {
root := buildTree()
cases := []struct {
name string
existed bool
}{
{"head", false},
{"body", true},
}
for _, c := range cases {
if block := root.findBlockByName(c.name); !(block != nil == c.existed) {
t.Fail()
}
}
}
func TestParseFile(t *testing.T) {
root := parseFile(rootDir, "list.html")
testList(root, t)
if len(dependencies.vertices) != 3 {
t.Fail()
}
pathIndex := filepath.Join(rootDir, "index.html")
pathItem := filepath.Join(rootDir, "item.html")
pathList := filepath.Join(rootDir, "list.html")
vertices := map[string]struct{}{
pathIndex: {},
pathItem: {},
pathList: {},
}
if !reflect.DeepEqual(vertices, dependencies.vertices) {
t.Fail()
}
graph := map[string]map[string]struct{}{
pathIndex: {
pathList: {},
},
pathItem: {
pathList: {},
},
}
if !reflect.DeepEqual(graph, dependencies.graph) {
t.Fail()
}
}
func testRebuild(root *node, t *testing.T) {
if len(root.children) != 5 {
t.Fail()
}
var (
child *node
content string
)
child = root.children[0]
content = strings.TrimSpace(child.chunk.String())
if child.t != TypeImport || content != `func Add(a, b int) int {
return a + b
}` {
t.Fail()
}
child = root.children[1]
content = strings.TrimSpace(child.chunk.String())
if child.t != TypeDefinition ||
content != "func UserList(userList []string, buffer *bytes.Buffer)" {
t.Fail()
}
child = root.children[2]
content = strings.TrimSpace(child.chunk.String())
if child.t != TypeHTML ||
content != `<!DOCTYPE html>
<html>
<head>
</head>
<body>` {
t.Fail()
}
child = root.children[3]
content = strings.TrimSpace(child.chunk.String())
if child.t != TypeBlock || content != "body" || len(child.children) != 4 {
t.Fail()
}
include := child.children[2]
if include.t != TypeInclude ||
include.chunk.String() != filepath.Join(rootDir, "item.html") ||
len(include.children) != 5 {
t.Fail()
}
child = root.children[4]
content = strings.TrimSpace(child.chunk.String())
if child.t != TypeHTML || content != `</body>
</html>` {
t.Fail()
}
}
func TestRebuild(t *testing.T) {
paths := []string{
"index.html",
"item.html",
"list.html",
}
for _, p := range paths {
parsedNodes[filepath.Join(rootDir, p)] = parseFile(rootDir, p)
}
root := parsedNodes[filepath.Join(rootDir, "list.html")]
root.rebuild()
testRebuild(root, t)
}
func TestParseDir(t *testing.T) {
dependencies.graph = make(map[string]map[string]struct{})
dependencies.vertices = make(map[string]struct{})
parseDir(rootDir)
root := parsedNodes[filepath.Join(rootDir, "list.html")]
testRebuild(root, t)
}