Hugo Nijhuis
62f085e8e6
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Implement automatic rebuild and browser reload during development:
- File watcher monitors .go files for changes with configurable extensions
- Builder compiles Go source to WASM on file changes
- LiveReload WebSocket server notifies connected browsers to reload
- DevServer combines all components for easy development setup
- HTML injection adds reload script automatically
Usage:
dev := host.NewDevServer("public", "index.html", ".", "public/app.wasm")
dev.ListenAndServe(":8080")
Closes #9
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
103 lines
2.4 KiB
Go
103 lines
2.4 KiB
Go
package host
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import (
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"strings"
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"testing"
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)
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func TestInjectReloadScript_BeforeBody(t *testing.T) {
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html := []byte(`<!DOCTYPE html>
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<html>
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<head><title>Test</title></head>
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<body>
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<h1>Hello</h1>
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</body>
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</html>`)
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result := InjectReloadScript(html)
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// Should contain the script
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if !strings.Contains(string(result), "livereload") {
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t.Error("Expected result to contain livereload script")
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}
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// Script should be before </body>
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bodyIndex := strings.Index(string(result), "</body>")
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scriptIndex := strings.Index(string(result), "<script>")
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if scriptIndex > bodyIndex {
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t.Error("Expected script to be injected before </body>")
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}
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}
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func TestInjectReloadScript_BeforeHTML(t *testing.T) {
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// HTML without body tag
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html := []byte(`<!DOCTYPE html>
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<html>
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<head><title>Test</title></head>
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<div>Hello</div>
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</html>`)
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result := InjectReloadScript(html)
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// Should contain the script
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if !strings.Contains(string(result), "livereload") {
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t.Error("Expected result to contain livereload script")
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}
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// Script should be before </html>
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htmlIndex := strings.Index(string(result), "</html>")
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scriptIndex := strings.Index(string(result), "<script>")
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if scriptIndex > htmlIndex {
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t.Error("Expected script to be injected before </html>")
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}
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}
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func TestInjectReloadScript_Fallback(t *testing.T) {
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// Minimal HTML without body or html closing tags
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html := []byte(`<div>Hello</div>`)
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result := InjectReloadScript(html)
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// Should contain the script
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if !strings.Contains(string(result), "livereload") {
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t.Error("Expected result to contain livereload script")
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}
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// Should be appended at the end
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if !strings.HasSuffix(string(result), "</script>") {
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t.Error("Expected script to be appended at the end")
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}
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}
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func TestInjectReloadScript_ContainsReconnect(t *testing.T) {
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html := []byte(`<html><body></body></html>`)
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result := InjectReloadScript(html)
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// Should contain reconnection logic
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if !strings.Contains(string(result), "reconnect") {
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t.Error("Expected script to contain reconnection logic")
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}
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}
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func TestIsHTMLContent(t *testing.T) {
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tests := []struct {
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contentType string
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expected bool
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}{
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{"text/html", true},
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{"text/html; charset=utf-8", true},
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{"application/json", false},
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{"text/css", false},
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{"application/javascript", false},
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}
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for _, tt := range tests {
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result := IsHTMLContent(tt.contentType)
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if result != tt.expected {
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t.Errorf("IsHTMLContent(%q) = %v, want %v", tt.contentType, result, tt.expected)
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}
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}
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}
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