fix: Fix weird issue with parallel tests

For some reason, when running parallel tests, if the polyfills are
installed after retrieving the global window proxy, and setting the
internal field referencing the Go window object, the field value is
lost in parallel tests.

Author: stroiman

internal/test/scripttests/suites.go

@@ -8,7 +8,10 @@ import (
 )
 
 func runSuite(s suite.TestingSuite) func(t *testing.T) {
-	return func(t *testing.T) { suite.Run(t, s) }
+	return func(t *testing.T) {
+		t.Parallel()
+		suite.Run(t, s)
+	}
 }
 
 func RunSuites(t *testing.T, h html.ScriptHost) {

scripting/v8host/event_target_test.go

@@ -4,11 +4,16 @@ import (
 	"testing"
 
 	"github.com/gost-dom/browser/html"
+	"github.com/gost-dom/browser/scripting/v8host"
 	"github.com/onsi/gomega"
 	. "github.com/onsi/gomega"
 )
 
 func TestV8EventTargetAddRemoveListeners(t *testing.T) {
+	t.Parallel()
+	host := v8host.New()
+	t.Cleanup(func() { host.Close() })
+
 	g := gomega.NewWithT(t)
 	win := html.NewWindow(html.WindowOptionHost(host))
 	t.Cleanup(win.Close)

scripting/v8host/script_host.go

@@ -357,7 +357,6 @@ func (host *V8ScriptHost) NewContext(w html.Window) html.ScriptContext {
 	errorCallback := func(err error) {
 		w.DispatchEvent(event.NewErrorEvent(err))
 	}
-	global = context.v8ctx.Global()
 	context.eventLoop = newEventLoop(context, errorCallback)
 	host.inspector.ContextCreated(context.v8ctx)
 	err := installPolyfills(context)
@@ -371,7 +370,7 @@ func (host *V8ScriptHost) NewContext(w html.Window) html.ScriptContext {
 			),
 		)
 	}
-	context.cacheNode(global, w)
+	context.cacheNode(context.v8ctx.Global(), w)
 	host.addContext(context)
 
 	return context