Function eval

browsertests/browser_test.go:183–201

eval runs the specified javascript in the browser. The javascript must return an [][]any, where each of the []any starts with either "LOG" or "ERROR" (see testdata/testfixture.js).

(t *testing.T, js string)

// return an [][]any, where each of the []any starts with either "LOG" or
// "ERROR" (see testdata/testfixture.js).
func eval(t *testing.T, js string) chromedp.ActionFunc {
	return func(ctx context.Context) error {
		var result [][]any
		err := chromedp.Evaluate(js, &result).Do(ctx)
		if err != nil {
			return err
		}
		for _, s := range result {
			if len(s) > 0 && s[0] == "LOG" {
				t.Log(s[1:]...)
			} else if len(s) > 0 && s[0] == "ERROR" {
				t.Error(s[1:]...)
			} else {
				t.Error(s...) // Treat missing prefix as an error.
			}
		}
		return nil
	}
}

//go:embed testdata/testfixture.js
var jsTestFixture string