Add browser registration test

Author: inancgumus

browser/module_test.go

@@ -0,0 +1,34 @@
+package browser
+
+import (
+	"testing"
+
+	"github.com/dop251/goja"
+	"github.com/stretchr/testify/require"
+
+	"github.com/grafana/xk6-browser/chromium"
+
+	k6common "go.k6.io/k6/js/common"
+	k6modulestest "go.k6.io/k6/js/modulestest"
+	k6metrics "go.k6.io/k6/metrics"
+)
+
+// TestModuleNew tests registering the module.
+// It doesn't test the module's remaining functionality as it is
+// already tested in the tests/ integration tests.
+func TestModuleNew(t *testing.T) {
+	t.Parallel()
+
+	vu := &k6modulestest.VU{
+		RuntimeField: goja.New(),
+		InitEnvField: &k6common.InitEnvironment{
+			Registry: k6metrics.NewRegistry(),
+		},
+	}
+	m, ok := New().NewModuleInstance(vu).(*ModuleInstance)
+	require.True(t, ok, "NewModuleInstance should return a ModuleInstance")
+	require.NotNil(t, m.mod, "Module should be set")
+	require.IsType(t, m.mod.Chromium, &chromium.BrowserType{})
+	require.NotNil(t, m.mod.Devices, "Devices should be set")
+	require.Equal(t, m.mod.Version, version, "Incorrect version")
+}