Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use MustEvaluate method of rod Package

Best Rod code snippet using rod.MustEvaluate

page_eval_test.go

Source:page_eval_test.go

...32	t.Neq(1, page.MustEval(`a = () => 1`).Int())33	t.Neq(1, page.MustEval(`a = function() { return 1 }`))34	t.Neq(1, page.MustEval(`/* ) */`))35	// reuse obj36	obj := page.MustEvaluate(rod.Eval(`() => () => 'ok'`).ByObject())37	t.Eq("ok", page.MustEval(`f => f()`, obj).Str())38}39func (t T) PageEvaluateRetry() {40	page := t.page.MustNavigate(t.blank())41	t.mc.stub(1, proto.RuntimeCallFunctionOn{}, func(send StubSend) (gson.JSON, error) {42		t.mc.stub(1, proto.RuntimeCallFunctionOn{}, func(send StubSend) (gson.JSON, error) {43			return gson.New(nil), cdp.ErrCtxNotFound44		})45		return gson.New(nil), cdp.ErrCtxNotFound46	})47	t.Eq(1, page.MustEval(`1`).Int())48}49func (t T) PageUpdateJSCtxIDErr() {50	page := t.page.MustNavigate(t.srcFile("./fixtures/click-iframe.html"))51	t.mc.stub(1, proto.RuntimeCallFunctionOn{}, func(send StubSend) (gson.JSON, error) {52		t.mc.stubErr(1, proto.RuntimeEvaluate{})53		return gson.New(nil), cdp.ErrCtxNotFound54	})55	t.Err(page.Eval(`1`))56	frame := page.MustElement("iframe").MustFrame()57	frame.MustReload()58	t.mc.stubErr(1, proto.DOMDescribeNode{})59	t.Err(frame.Element(`button`))60	frame.MustReload()61	t.mc.stubErr(1, proto.DOMResolveNode{})62	t.Err(frame.Element(`button`))63}64func (t T) PageExpose() {65	page := t.newPage(t.blank()).MustWaitLoad()66	stop := page.MustExpose("exposedFunc", func(g gson.JSON) (interface{}, error) {67		return g.Get("k").Str(), nil68	})69	utils.All(func() {70		res := page.MustEval(`exposedFunc({k: 'a'})`)71		t.Eq("a", res.Str())72	}, func() {73		res := page.MustEval(`exposedFunc({k: 'b'})`)74		t.Eq("b", res.Str())75	})()76	// survive the reload77	page.MustReload().MustWaitLoad()78	res := page.MustEval(`exposedFunc({k: 'ok'})`)79	t.Eq("ok", res.Str())80	stop()81	t.Panic(func() {82		stop()83	})84	t.Panic(func() {85		page.MustReload().MustWaitLoad().MustEval(`exposedFunc()`)86	})87	t.Panic(func() {88		t.mc.stubErr(1, proto.RuntimeCallFunctionOn{})89		page.MustExpose("exposedFunc", nil)90	})91	t.Panic(func() {92		t.mc.stubErr(1, proto.RuntimeAddBinding{})93		page.MustExpose("exposedFunc2", nil)94	})95	t.Panic(func() {96		t.mc.stubErr(1, proto.PageAddScriptToEvaluateOnNewDocument{})97		page.MustExpose("exposedFunc", nil)98	})99}100func (t T) Release() {101	res, err := t.page.Evaluate(rod.Eval(`document`).ByObject())102	t.E(err)103	t.page.MustRelease(res)104}105func (t T) PromiseLeak() {106	/*107		Perform a slow action then navigate the page to another url,108		we can see the slow operation will still be executed.109	*/110	p := t.page.MustNavigate(t.blank())111	utils.All(func() {112		_, err := p.Eval(`new Promise(r => setTimeout(() => r(location.href), 1000))`)113		t.Is(err, cdp.ErrCtxDestroyed)114	}, func() {115		utils.Sleep(0.3)116		p.MustNavigate(t.blank())117	})()118}119func (t T) ObjectLeak() {120	/*121		Seems like it won't leak122	*/123	p := t.page.MustNavigate(t.blank())124	obj := p.MustEvaluate(rod.Eval("{a:1}").ByObject())125	p.MustReload().MustWaitLoad()126	t.Panic(func() {127		p.MustEvaluate(rod.Eval(`obj => obj`, obj))128	})129}130func (t T) PageObjectErr() {131	t.Panic(func() {132		t.page.MustObjectToJSON(&proto.RuntimeRemoteObject{133			ObjectID: "not-exists",134		})135	})136	t.Panic(func() {137		t.page.MustElementFromNode(&proto.DOMNode{NodeID: -1})138	})139	t.Panic(func() {140		node := t.page.MustNavigate(t.blank()).MustElement(`body`).MustDescribe()141		t.mc.stubErr(1, proto.DOMResolveNode{})142		t.page.MustElementFromNode(node)143	})144}145func (t T) GetJSHelperRetry() {146	t.page.MustNavigate(t.srcFile("fixtures/click.html"))147	t.mc.stub(1, proto.RuntimeCallFunctionOn{}, func(send StubSend) (gson.JSON, error) {148		return gson.JSON{}, cdp.ErrCtxNotFound149	})150	t.page.MustElements("button")151}152func (t T) ConcurrentEval() {153	p := t.page.MustNavigate(t.blank())154	list := make(chan int, 2)155	start := time.Now()156	utils.All(func() {157		list <- p.MustEval(`new Promise(r => setTimeout(r, 1000, 2))`).Int()158	}, func() {159		list <- p.MustEval(`new Promise(r => setTimeout(r, 500, 1))`).Int()160	})()161	duration := time.Since(start)162	t.Lt(duration, 1500*time.Millisecond)163	t.Gt(duration, 1000*time.Millisecond)164	t.Eq([]int{<-list, <-list}, []int{1, 2})165}166func (t T) PageSlowRender() {167	p := t.page.MustNavigate(t.srcFile("./fixtures/slow-render.html"))168	t.Eq(p.MustElement("div").MustText(), "ok")169}170func (t T) PageIframeReload() {171	p := t.page.MustNavigate(t.srcFile("./fixtures/click-iframe.html"))172	frame := p.MustElement("iframe").MustFrame()173	btn := frame.MustElement("button")174	t.Eq(btn.MustText(), "click me")175	frame.MustReload()176	btn = frame.MustElement("button")177	t.Eq(btn.MustText(), "click me")178	t.Has(*p.MustElement("iframe").MustAttribute("src"), "click.html")179}180func (t T) PageObjCrossNavigation() {181	p := t.page.MustNavigate(t.blank())182	obj := p.MustEvaluate(rod.Eval(`{}`).ByObject())183	t.page.MustNavigate(t.blank())184	_, err := p.Evaluate(rod.Eval(`1`).This(obj))185	t.Is(err, &rod.ErrObjectNotFound{})186	t.Has(err.Error(), "cannot find object: {\"type\":\"object\"")187}188func (t T) EnsureJSHelperErr() {189	p := t.page.MustNavigate(t.blank())190	t.mc.stubErr(2, proto.RuntimeCallFunctionOn{})191	t.Err(p.Elements(`button`))192}193func (t T) EvalOptionsString() {194	p := t.page.MustNavigate(t.srcFile("fixtures/click.html"))195	el := p.MustElement("button")196	t.Eq(rod.Eval(`this.parentElement`).This(el.Object).String(), "this.parentElement() button")...

MustEvaluate

Using AI Code Generation

1import (2func main() {3	browser := rod.New().MustConnect()4	defer browser.MustClose()5	defer page.MustClose()6	page.MustElement(".gLFyf").MustInput("Rod Page")7	page.MustElement("input[type=submit]").MustClick()8	page.MustWaitLoad()9	results := page.MustElements(".g")10	fmt.Println("Results found:", len(results))11	fmt.Println(results[0].MustText())12}13import (14func main() {15	browser := rod.New().MustConnect()16	defer browser.MustClose()17	defer page.MustClose()18	page.MustElement(".gLFyf").MustInput("Rod Page")19	page.MustElement("input[type=submit]").MustClick()20	page.MustWaitLoad()21	results := page.MustElements(".g")22	fmt.Println("Results found:", len(results))23	fmt.Println(results[0].MustText())24}

MustEvaluate

Using AI Code Generation

1import (2func main() {3	browser := rod.New().MustConnect()4	defer browser.MustClose()5	page.MustElement("input").MustInput("Hello World")6	fmt.Println(page.MustEvaluate("document.querySelector('input').value"))7}8import (9func main() {10	browser := rod.New().MustConnect()11	defer browser.MustClose()12	page.MustElement("input").MustInput("Hello World")13}14import (15func main() {16	browser := rod.New().MustConnect()17	defer browser.MustClose()18	page.MustHandle("dialog", func(e *rod.Event) {19		e.Page.MustElement(".ok").MustClick()20	})21}22import (23func main() {24	browser := rod.New().MustConnect()25	defer browser.MustClose()26}27import (28func main() {29	browser := rod.New().MustConnect()30	defer browser.MustClose()31}32import (33func main() {34	browser := rod.New().MustConnect()35	defer browser.MustClose()36}37import (38func main() {39	browser := rod.New().MustConnect()40	defer browser.MustClose()

MustEvaluate

Using AI Code Generation

1import (2func main() {3	browser := rod.New().MustConnect()4	defer browser.MustClose()5	title := page.MustEvaluate(`() => document.title`).String()6	fmt.Println(title)7}8import (9func main() {10	browser := rod.New().MustConnect()11	defer browser.MustClose()12	page.MustElement("input").MustInput("rod").MustPress(rod.Enter)13	page.MustElement("h3").MustClick()14	fmt.Println(page.MustInfo().URL)15}16import (17func main() {18	browser := rod.New().MustConnect()19	defer browser.MustClose()20	page.MustElement("input").MustInput("rod").MustPress(rod.Enter)21	page.MustElement("h3").MustClick()22	fmt.Println(page.MustInfo().URL)23}24import (25func main() {26	browser := rod.New().MustConnect()27	defer browser.MustClose()28	fmt.Println(page.MustInfo().URL)29}30import (31func main() {32	browser := rod.New().MustConnect()33	defer browser.MustClose()34	fmt.Println(page.MustInfo().URL)35}

MustEvaluate

Using AI Code Generation

1import (2func main() {3	browser := rod.New().MustConnect()4	defer browser.MustClose()5	page.MustSetViewport(1280, 720, 1, false)6	page.MustElement("#hplogo").MustWaitLoad()7	fmt.Println("Google logo loaded")8}9import (10func main() {11	browser := rod.New().MustConnect()12	defer browser.MustClose()13	page.MustSetViewport(1280, 720, 1, false)14	page.MustElement("#hplogo").MustWaitLoad()15	fmt.Println("Google logo loaded")16}17import (18func main() {19	browser := rod.New().MustConnect()20	defer browser.MustClose()21	page.MustSetViewport(1280, 720, 1, false)22	page.MustElement("#hplogo").MustWaitLoad()23	fmt.Println("Google logo loaded")24}25import (26func main() {27	browser := rod.New().Connect()28	defer browser.Close()29	page.SetViewport(1280, 720, 1, false)30	page.Element("#hplogo").WaitLoad()31	fmt.Println("Google logo loaded")32}33import (34func main() {35	browser := rod.New().Connect()36	defer browser.Close()37	page.SetViewport(1280, 720, 1, false)38	page.Element("#hplogo").WaitLoad()39	fmt.Println("Google logo loaded")40}

MustEvaluate

Using AI Code Generation

1import (2func main() {3    title := page.MustElement("title").MustText()4    fmt.Println(title)5}6import (7func main() {8    title, err := page.Element("title").Text()9    if err != nil {10        fmt.Println(err)11    }12    fmt.Println(title)13}14import (15func main() {16    fmt.Println(title)17}18import (19func main() {20    if err != nil {21        fmt.Println(err)22    }23    fmt.Println(title)24}25import (26func main() {27    title := page.MustElementR("title").MustText()28    fmt.Println(title)29}30import (31func main() {32    title, err := page.ElementR("title").Text()33    if err != nil {

MustEvaluate

Using AI Code Generation

1import (2func main() {3	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()4	page := browser.MustPage("")5	title := page.MustElement("title").MustText()6	println(title)7}8import (9func main() {10	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()11	page := browser.MustPage("")12	title := page.MustElement("title").MustText()13	println(title)14}15import (16func main() {17	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()18	page := browser.MustPage("")19	title := page.MustElement("title").MustText()20	println(title)21}22import (23func main() {24	browser := rod.New().ControlURL(launcher.New().MustLaunch()).MustConnect()25	page := browser.MustPage("")26	title := page.MustElement("title").MustText()27	println(title)28}

MustEvaluate

Using AI Code Generation

1import (2func main() {3  browser := rod.New().MustConnect()4  title := page.MustEvaluate("() => document.title").String()5  fmt.Println(title)6}7import (8func main() {9  browser := rod.New().MustConnect()10  title := page.MustElement("title").MustText()11  fmt.Println(title)12}13import (14func main() {15  browser := rod.New().MustConnect()16  title := page.MustElementR("title").MustText()17  fmt.Println(title)18}19import (20func main() {21  browser := rod.New().MustConnect()22  titles := page.MustElements("title").MustMap(func(e *rod.Element) string {23    return e.MustText()24  })25  fmt.Println(titles)26}27import (28func main() {29  browser := rod.New().MustConnect()

MustEvaluate

Using AI Code Generation

1import (2func main() {3	browser := rod.New().MustConnect()4	title, err := page.MustElement("title").MustEvaluate(proto.RuntimeCallFunctionOn{5		FunctionDeclaration: `function() { return this.textContent }`,6	}).String()7	if err != nil {8		panic(err)9	}10	fmt.Println(title)11}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.