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partial_test.go
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package partial
import (
"context"
"html/template"
"io"
"net/http"
"net/http/httptest"
"strings"
"testing"
"github.com/donseba/go-partial/connector"
)
func TestNewRoot(t *testing.T) {
root := New().Templates("template.gohtml")
if root == nil {
t.Error("NewRoot should not return nil")
return
}
if root.id != "root" {
t.Errorf("NewRoot should have id 'root', got %s", root.id)
}
if len(root.templates) != 1 {
t.Errorf("NewRoot should have 1 template, got %d", len(root.templates))
}
if root.templates[0] != "template.gohtml" {
t.Errorf("NewRoot should have template 'template.gohtml', got %s", root.templates[0])
}
if root.globalData == nil {
t.Error("NewRoot should have non-nil globalData")
}
if len(root.children) != 0 {
t.Errorf("NewRoot should have 0 children, got %d", len(root.children))
}
if len(root.oobChildren) != 0 {
t.Errorf("NewRoot should have 0 oobChildren, got %d", len(root.oobChildren))
}
if root.data == nil {
t.Error("NewRoot should have non-nil data")
}
if len(root.data) != 0 {
t.Errorf("NewRoot should have 0 data, got %d", len(root.data))
}
if root.Reset() != root {
t.Error("Reset should return the partial")
}
}
func TestRequestBasic(t *testing.T) {
svc := NewService(&Config{})
var handleRequest = func(w http.ResponseWriter, r *http.Request) {
fsys := &InMemoryFS{
Files: map[string]string{
"templates/index.html": `<html><body>{{ child "content" }}</body></html>`,
"templates/content.html": "<div>{{.Data.Text}}</div>",
},
}
p := New("templates/index.html").ID("root")
// content
content := New("templates/content.html").ID("content")
content.SetData(map[string]any{
"Text": "Welcome to the home page",
})
p.With(content)
out, err := svc.NewLayout().FS(fsys).Set(p).RenderWithRequest(r.Context(), r)
if err != nil {
_, _ = w.Write([]byte(err.Error()))
return
}
_, _ = w.Write([]byte(out))
}
t.Run("basic", func(t *testing.T) {
request, _ := http.NewRequest(http.MethodGet, "/", nil)
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<html><body><div>Welcome to the home page</div></body></html>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
})
t.Run("partial", func(t *testing.T) {
request, _ := http.NewRequest(http.MethodGet, "/", nil)
request.Header.Set("X-Target", "content")
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<div>Welcome to the home page</div>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
})
}
func TestRequestWrap(t *testing.T) {
svc := NewService(&Config{})
var handleRequest = func(w http.ResponseWriter, r *http.Request) {
fsys := &InMemoryFS{
Files: map[string]string{
"templates/index.html": `<html><body>{{ child "content" }}</body></html>`,
"templates/content.html": "<div>{{.Data.Text}}</div>",
},
}
index := New("templates/index.html").ID("root")
// content
content := New("templates/content.html").ID("content")
content.SetData(map[string]any{
"Text": "Welcome to the home page",
})
out, err := svc.NewLayout().FS(fsys).Set(content).Wrap(index).RenderWithRequest(r.Context(), r)
if err != nil {
_, _ = w.Write([]byte(err.Error()))
return
}
_, _ = w.Write([]byte(out))
}
t.Run("basic", func(t *testing.T) {
request, _ := http.NewRequest(http.MethodGet, "/", nil)
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<html><body><div>Welcome to the home page</div></body></html>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
})
t.Run("partial", func(t *testing.T) {
request, _ := http.NewRequest(http.MethodGet, "/", nil)
request.Header.Set("X-Target", "content")
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<div>Welcome to the home page</div>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
})
}
func TestRequestOOB(t *testing.T) {
svc := NewService(&Config{})
var handleRequest = func(w http.ResponseWriter, r *http.Request) {
fsys := &InMemoryFS{
Files: map[string]string{
"templates/index.html": `<html><body>{{ child "content" }}{{ child "footer" }}</body></html>`,
"templates/content.html": "<div>{{.Data.Text}}</div>",
"templates/footer.html": "<div {{ if swapOOB }}hx-swap-oob='true' {{ end }}id='footer'>{{.Data.Text}}</div>",
},
}
p := New("templates/index.html").ID("root")
// content
content := New("templates/content.html").ID("content")
content.SetData(map[string]any{
"Text": "Welcome to the home page",
})
p.With(content)
// oob
oob := New("templates/footer.html").ID("footer")
oob.SetData(map[string]any{
"Text": "This is the footer",
})
p.WithOOB(oob)
out, err := svc.NewLayout().FS(fsys).Set(p).RenderWithRequest(r.Context(), r)
if err != nil {
_, _ = w.Write([]byte(err.Error()))
return
}
_, _ = w.Write([]byte(out))
}
t.Run("basic", func(t *testing.T) {
request, _ := http.NewRequest(http.MethodGet, "/", nil)
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<html><body><div>Welcome to the home page</div><div id='footer'>This is the footer</div></body></html>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
})
t.Run("partial", func(t *testing.T) {
request, _ := http.NewRequest(http.MethodGet, "/", nil)
request.Header.Set("X-Target", "content")
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<div>Welcome to the home page</div><div hx-swap-oob='true' id='footer'>This is the footer</div>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
})
}
func TestRequestOOBSwap(t *testing.T) {
svc := NewService(&Config{})
var handleRequest = func(w http.ResponseWriter, r *http.Request) {
fsys := &InMemoryFS{
Files: map[string]string{
"templates/index.html": `<html><body>{{ child "content" }}{{ child "footer" }}</body></html>`,
"templates/content.html": "<div>{{.Data.Text}}</div>",
"templates/footer.html": "<div {{ if swapOOB }}hx-swap-oob='true' {{ end }}id='footer'>{{.Data.Text}}</div>",
},
}
// the main template that will be rendered
p := New("templates/index.html").ID("root")
// oob footer that resides on the page
oob := New("templates/footer.html").ID("footer")
oob.SetData(map[string]any{
"Text": "This is the footer",
})
p.WithOOB(oob)
// the actual content required for the page
content := New("templates/content.html").ID("content")
content.SetData(map[string]any{
"Text": "Welcome to the home page",
})
out, err := svc.NewLayout().FS(fsys).Set(content).Wrap(p).RenderWithRequest(r.Context(), r)
if err != nil {
_, _ = w.Write([]byte(err.Error()))
return
}
_, _ = w.Write([]byte(out))
}
t.Run("basic", func(t *testing.T) {
request, _ := http.NewRequest(http.MethodGet, "/", nil)
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<html><body><div>Welcome to the home page</div><div id='footer'>This is the footer</div></body></html>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
})
t.Run("partial", func(t *testing.T) {
request, _ := http.NewRequest(http.MethodGet, "/", nil)
request.Header.Set("X-Target", "content")
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<div>Welcome to the home page</div><div hx-swap-oob='true' id='footer'>This is the footer</div>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
})
}
func TestDeepNested(t *testing.T) {
svc := NewService(&Config{})
var handleRequest = func(w http.ResponseWriter, r *http.Request) {
fsys := &InMemoryFS{
Files: map[string]string{
"templates/index.html": `<html><body>{{ child "content" }}</body></html>`,
"templates/content.html": "<div>{{.Data.Text}}</div>",
"templates/nested.html": `<div>{{ upper .Data.Text }}</div>`,
},
}
p := New("templates/index.html").ID("root")
// nested content
nested := New("templates/nested.html").ID("nested")
nested.SetData(map[string]any{
"Text": "This is the nested content",
})
// content
content := New("templates/content.html").ID("content")
content.SetData(map[string]any{
"Text": "Welcome to the home page",
}).With(nested)
p.With(content)
out, err := svc.NewLayout().FS(fsys).Set(p).RenderWithRequest(r.Context(), r)
if err != nil {
_, _ = w.Write([]byte(err.Error()))
return
}
_, _ = w.Write([]byte(out))
}
t.Run("find nested item and return it", func(t *testing.T) {
request, _ := http.NewRequest(http.MethodGet, "/", nil)
request.Header.Set("X-Target", "nested")
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<div>THIS IS THE NESTED CONTENT</div>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
})
}
func TestMissingPartial(t *testing.T) {
svc := NewService(&Config{})
var handleRequest = func(w http.ResponseWriter, r *http.Request) {
fsys := &InMemoryFS{
Files: map[string]string{
"templates/index.html": `<html><body>{{ child "content" }}</body></html>`,
},
}
p := New("templates/index.html").ID("root")
out, err := svc.NewLayout().FS(fsys).Set(p).RenderWithRequest(r.Context(), r)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
_, _ = w.Write([]byte(out))
}
request, _ := http.NewRequest(http.MethodGet, "/", nil)
request.Header.Set("X-Target", "nonexistent")
response := httptest.NewRecorder()
handleRequest(response, request)
if response.Code != http.StatusInternalServerError {
t.Errorf("Expected status 500, got %d", response.Code)
}
}
func TestDataInTemplates(t *testing.T) {
svc := NewService(&Config{})
svc.AddData("Title", "My Page")
var handleRequest = func(w http.ResponseWriter, r *http.Request) {
// Create a new layout
layout := svc.NewLayout()
// Set LayoutData
layout.SetData(map[string]any{
"PageTitle": "Home Page",
"User": "John Doe",
})
fsys := &InMemoryFS{
Files: map[string]string{
"templates/index.html": `<html><head><title>{{ .Service.Title }}</title></head><body>{{ child "content" }}</body></html>`,
"templates/content.html": `<div>{{ .Layout.PageTitle }}</div><div>{{ .Layout.User }}</div><div>{{ .Data.Articles }}</div>`,
},
}
content := New("templates/content.html").ID("content")
content.SetData(map[string]any{
"Articles": []string{"Article 1", "Article 2", "Article 3"},
})
p := New("templates/index.html").ID("root")
p.With(content)
out, err := layout.FS(fsys).Set(p).RenderWithRequest(r.Context(), r)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
_, _ = w.Write([]byte(out))
}
request, _ := http.NewRequest(http.MethodGet, "/", nil)
response := httptest.NewRecorder()
handleRequest(response, request)
expected := "<html><head><title>My Page</title></head><body><div>Home Page</div><div>John Doe</div><div>[Article 1 Article 2 Article 3]</div></body></html>"
if response.Body.String() != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
}
func TestWithSelectMap(t *testing.T) {
fsys := &InMemoryFS{
Files: map[string]string{
"index.gohtml": `<html><body>{{ child "content" }}</body></html>`,
"content.gohtml": `<div class="content">{{selection}}</div>`,
"tab1.gohtml": "Tab 1 Content",
"tab2.gohtml": "Tab 2 Content",
"default.gohtml": "Default Tab Content",
},
}
// Create a map of selection keys to partials
partialsMap := map[string]*Partial{
"tab1": New("tab1.gohtml").ID("tab1"),
"tab2": New("tab2.gohtml").ID("tab2"),
"default": New("default.gohtml").ID("default"),
}
// Create the content partial with the selection map
contentPartial := New("content.gohtml").
ID("content").
WithSelectMap("default", partialsMap)
// Create the layout partial
index := New("index.gohtml")
// Set up the service and layout
svc := NewService(&Config{
fs: fsys, // Set the file system in the service config
})
layout := svc.NewLayout().
Set(contentPartial).
Wrap(index)
// Set up a test server
handler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
ctx := r.Context()
err := layout.WriteWithRequest(ctx, w, r)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
})
// Create a test server
server := httptest.NewServer(handler)
defer server.Close()
// Define test cases
testCases := []struct {
name string
selectHeader string
expectedContent string
}{
{
name: "Select tab1",
selectHeader: "tab1",
expectedContent: "Tab 1 Content",
},
{
name: "Select tab2",
selectHeader: "tab2",
expectedContent: "Tab 2 Content",
},
{
name: "Select default",
selectHeader: "",
expectedContent: "Default Tab Content",
},
{
name: "Invalid selection",
selectHeader: "invalid",
expectedContent: "selected partial 'invalid' not found in parent 'content'",
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
req, err := http.NewRequest("GET", server.URL, nil)
if err != nil {
t.Fatalf("Failed to create request: %v", err)
}
if tc.selectHeader != "" {
req.Header.Set("X-Select", tc.selectHeader)
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
t.Fatalf("Failed to send request: %v", err)
}
defer resp.Body.Close()
// Read response body
bodyBytes, err := io.ReadAll(resp.Body)
if err != nil {
t.Fatalf("Failed to read response body: %v", err)
}
bodyString := string(bodyBytes)
// Check if the expected content is in the response
if !strings.Contains(bodyString, tc.expectedContent) {
t.Errorf("Expected response to contain %q, but got %q", tc.expectedContent, bodyString)
}
})
}
}
func BenchmarkWithSelectMap(b *testing.B) {
fsys := &InMemoryFS{
Files: map[string]string{
"index.gohtml": `<html><body>{{ child "content" }}</body></html>`,
"content.gohtml": `<div class="content">{{selection}}</div>`,
"tab1.gohtml": "Tab 1 Content",
"tab2.gohtml": "Tab 2 Content",
"default.gohtml": "Default Tab Content",
},
}
service := NewService(&Config{
Connector: connector.NewPartial(nil),
UseCache: false,
})
layout := service.NewLayout().FS(fsys)
content := New("content.gohtml").
ID("content").
WithSelectMap("default", map[string]*Partial{
"tab1": New("tab1.gohtml").ID("tab1"),
"tab2": New("tab2.gohtml").ID("tab2"),
"default": New("default.gohtml").ID("default"),
})
index := New("index.gohtml")
layout.Set(content).Wrap(index)
req := httptest.NewRequest("GET", "/", nil)
b.ResetTimer()
for i := 0; i < b.N; i++ {
// Call the function you want to benchmark
_, err := layout.RenderWithRequest(context.Background(), req)
if err != nil {
b.Fatalf("Error rendering: %v", err)
}
}
}
func BenchmarkRenderWithRequest(b *testing.B) {
// Setup configuration and service
cfg := &Config{
Connector: connector.NewPartial(nil),
UseCache: false,
}
service := NewService(cfg)
fsys := &InMemoryFS{
Files: map[string]string{
"templates/index.html": `<html><head><title>{{ .Service.Title }}</title></head><body>{{ child "content" }}</body></html>`,
"templates/content.html": `<div>{{ .Layout.PageTitle }}</div><div>{{ .Layout.User }}</div><div>{{ .Data.Articles }}</div>`,
},
}
// Create a new layout
layout := service.NewLayout().FS(fsys)
// Create content partial
content := NewID("content", "templates/content.html")
content.SetData(map[string]any{
"Title": "Benchmark Test",
"Message": "This is a benchmark test.",
})
index := NewID("index", "templates/index.html")
// Set the content partial in the layout
layout.Set(content).Wrap(index)
// Create a sample HTTP request
req := httptest.NewRequest("GET", "/", nil)
// Reset the timer after setup
b.ResetTimer()
for i := 0; i < b.N; i++ {
// Call the function you want to benchmark
_, err := layout.RenderWithRequest(context.Background(), req)
if err != nil {
b.Fatalf("Error rendering: %v", err)
}
}
}
func TestRenderTable(t *testing.T) {
svc := NewService(&Config{})
var handleRequest = func(w http.ResponseWriter, r *http.Request) {
// Define in-memory templates for the table and the row
fsys := &InMemoryFS{
Files: map[string]string{
"templates/table.html": `<table>{{ range $i := .Data.Rows }}{{ child "row" "RowNumber" $i }}{{ end }}</table>`,
"templates/row.html": `<tr><td>Row {{ .Data.RowNumber }}</td></tr>`,
},
}
// Create the row partial
rowPartial := New("templates/row.html").ID("row")
// Create the table partial and set data
tablePartial := New("templates/table.html").ID("table")
tablePartial.SetData(map[string]any{
"Rows": []int{1, 2, 3, 4, 5}, // Generate 5 rows
})
tablePartial.With(rowPartial)
// Render the table partial
out, err := svc.NewLayout().FS(fsys).Set(tablePartial).RenderWithRequest(r.Context(), r)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
_, _ = w.Write([]byte(out))
}
request, _ := http.NewRequest(http.MethodGet, "/", nil)
response := httptest.NewRecorder()
handleRequest(response, request)
expected := `<table><tr><td>Row 1</td></tr><tr><td>Row 2</td></tr><tr><td>Row 3</td></tr><tr><td>Row 4</td></tr><tr><td>Row 5</td></tr></table>`
if strings.TrimSpace(response.Body.String()) != expected {
t.Errorf("expected %s, got %s", expected, response.Body.String())
}
}
func TestMergeFuncMap(t *testing.T) {
svc := NewService(&Config{
FuncMap: template.FuncMap{
"existingFunc": func() string { return "existing" },
},
})
svc.MergeFuncMap(template.FuncMap{
"newFunc": func() string { return "new" },
"child": func() string { return "should not overwrite" },
})
if _, ok := svc.config.FuncMap["newFunc"]; !ok {
t.Error("newFunc should be added to FuncMap")
}
if svc.config.FuncMap["newFunc"].(func() string)() != "new" {
t.Error("newFunc should return 'new'")
}
if _, ok := svc.config.FuncMap["child"]; ok {
t.Error("child should not be overwritten in FuncMap")
}
}