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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}

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