How to use evaluate method of rod Package

Best Rod code snippet using rod.evaluate

page_eval_test.go

Source:page_eval_test.go

1package rod_test2import (3	"testing"4	"time"5	"github.com/go-rod/rod"6	"github.com/go-rod/rod/lib/cdp"7	"github.com/go-rod/rod/lib/proto"8	"github.com/go-rod/rod/lib/utils"9	"github.com/ysmood/gson"10)11func TestPageEvalOnNewDocument(t *testing.T) {12	g := setup(t)13	p := g.newPage()14	p.MustEvalOnNewDocument(`window.rod = 'ok'`)15	// to activate the script16	p.MustNavigate(g.blank())17	g.Eq(p.MustEval("() => rod").String(), "ok")18	g.Panic(func() {19		g.mc.stubErr(1, proto.PageAddScriptToEvaluateOnNewDocument{})20		p.MustEvalOnNewDocument(`1`)21	})22}23func TestPageEval(t *testing.T) {24	g := setup(t)25	page := g.page.MustNavigate(g.blank())26	g.Eq(3, page.MustEval(`27		(a, b) => a + b28	`, 1, 2).Int())29	g.Eq(10, page.MustEval(`(a, b, c, d) => a + b + c + d`, 1, 2, 3, 4).Int())30	g.Eq(page.MustEval(`function() {31		return 1132	}`).Int(), 11)33	g.Eq(page.MustEval(`	 ; () => 1; `).Int(), 1)34	// reuse obj35	obj := page.MustEvaluate(rod.Eval(`() => () => 'ok'`).ByObject())36	g.Eq("ok", page.MustEval(`f => f()`, obj).Str())37	_, err := page.Eval(`10`)38	g.Has(err.Error(), `eval js error: TypeError: 10.apply is not a function`)39	_, err = page.Eval(`() => notExist()`)40	g.Is(err, &rod.ErrEval{})41	g.Has(err.Error(), `eval js error: ReferenceError: notExist is not defined`)42}43func TestPageEvaluateRetry(t *testing.T) {44	g := setup(t)45	page := g.page.MustNavigate(g.blank())46	g.mc.stub(1, proto.RuntimeCallFunctionOn{}, func(send StubSend) (gson.JSON, error) {47		g.mc.stub(1, proto.RuntimeCallFunctionOn{}, func(send StubSend) (gson.JSON, error) {48			return gson.New(nil), cdp.ErrCtxNotFound49		})50		return gson.New(nil), cdp.ErrCtxNotFound51	})52	g.Eq(1, page.MustEval(`() => 1`).Int())53}54func TestPageUpdateJSCtxIDErr(t *testing.T) {55	g := setup(t)56	page := g.page.MustNavigate(g.srcFile("./fixtures/click-iframe.html"))57	g.mc.stub(1, proto.RuntimeCallFunctionOn{}, func(send StubSend) (gson.JSON, error) {58		g.mc.stubErr(1, proto.RuntimeEvaluate{})59		return gson.New(nil), cdp.ErrCtxNotFound60	})61	g.Err(page.Eval(`() => 1`))62	frame := page.MustElement("iframe").MustFrame()63	frame.MustReload()64	g.mc.stubErr(1, proto.DOMDescribeNode{})65	g.Err(frame.Element(`button`))66	frame.MustReload()67	g.mc.stubErr(1, proto.DOMResolveNode{})68	g.Err(frame.Element(`button`))69}70func TestPageExpose(t *testing.T) {71	g := setup(t)72	page := g.newPage(g.blank()).MustWaitLoad()73	stop := page.MustExpose("exposedFunc", func(g gson.JSON) (interface{}, error) {74		return g.Get("k").Str(), nil75	})76	utils.All(func() {77		res := page.MustEval(`() => exposedFunc({k: 'a'})`)78		g.Eq("a", res.Str())79	}, func() {80		res := page.MustEval(`() => exposedFunc({k: 'b'})`)81		g.Eq("b", res.Str())82	})()83	// survive the reload84	page.MustReload().MustWaitLoad()85	res := page.MustEval(`() => exposedFunc({k: 'ok'})`)86	g.Eq("ok", res.Str())87	stop()88	g.Panic(func() {89		stop()90	})91	g.Panic(func() {92		page.MustReload().MustWaitLoad().MustEval(`() => exposedFunc()`)93	})94	g.Panic(func() {95		g.mc.stubErr(1, proto.RuntimeCallFunctionOn{})96		page.MustExpose("exposedFunc", nil)97	})98	g.Panic(func() {99		g.mc.stubErr(1, proto.RuntimeAddBinding{})100		page.MustExpose("exposedFunc2", nil)101	})102	g.Panic(func() {103		g.mc.stubErr(1, proto.PageAddScriptToEvaluateOnNewDocument{})104		page.MustExpose("exposedFunc", nil)105	})106}107func TestObjectRelease(t *testing.T) {108	g := setup(t)109	res, err := g.page.Evaluate(rod.Eval(`() => document`).ByObject())110	g.E(err)111	g.page.MustRelease(res)112}113func TestPromiseLeak(t *testing.T) {114	g := setup(t)115	/*116		Perform a slow action then navigate the page to another url,117		we can see the slow operation will still be executed.118	*/119	p := g.page.MustNavigate(g.blank())120	utils.All(func() {121		_, err := p.Eval(`() => new Promise(r => setTimeout(() => r(location.href), 1000))`)122		g.Is(err, cdp.ErrCtxDestroyed)123	}, func() {124		utils.Sleep(0.3)125		p.MustNavigate(g.blank())126	})()127}128func TestObjectLeak(t *testing.T) {129	g := setup(t)130	/*131		Seems like it won't leak132	*/133	p := g.page.MustNavigate(g.blank())134	obj := p.MustEvaluate(rod.Eval("() => ({a:1})").ByObject())135	p.MustReload().MustWaitLoad()136	g.Panic(func() {137		p.MustEvaluate(rod.Eval(`obj => obj`, obj))138	})139}140func TestPageObjectErr(t *testing.T) {141	g := setup(t)142	g.Panic(func() {143		g.page.MustObjectToJSON(&proto.RuntimeRemoteObject{144			ObjectID: "not-exists",145		})146	})147	g.Panic(func() {148		g.page.MustElementFromNode(&proto.DOMNode{NodeID: -1})149	})150	g.Panic(func() {151		node := g.page.MustNavigate(g.blank()).MustElement(`body`).MustDescribe()152		g.mc.stubErr(1, proto.DOMResolveNode{})153		g.page.MustElementFromNode(node)154	})155}156func TestGetJSHelperRetry(t *testing.T) {157	g := setup(t)158	g.page.MustNavigate(g.srcFile("fixtures/click.html"))159	g.mc.stub(1, proto.RuntimeCallFunctionOn{}, func(send StubSend) (gson.JSON, error) {160		return gson.JSON{}, cdp.ErrCtxNotFound161	})162	g.page.MustElements("button")163}164func TestConcurrentEval(t *testing.T) {165	g := setup(t)166	p := g.page.MustNavigate(g.blank())167	list := make(chan int, 2)168	start := time.Now()169	utils.All(func() {170		list <- p.MustEval(`() => new Promise(r => setTimeout(r, 2000, 2))`).Int()171	}, func() {172		list <- p.MustEval(`() => new Promise(r => setTimeout(r, 1000, 1))`).Int()173	})()174	duration := time.Since(start)175	g.Gt(duration, 1000*time.Millisecond)176	g.Lt(duration, 3000*time.Millisecond)177	g.Eq([]int{<-list, <-list}, []int{1, 2})178}179func TestPageSlowRender(t *testing.T) {180	g := setup(t)181	p := g.page.MustNavigate(g.srcFile("./fixtures/slow-render.html"))182	g.Eq(p.MustElement("div").MustText(), "ok")183}184func TestPageIframeReload(t *testing.T) {185	g := setup(t)186	p := g.page.MustNavigate(g.srcFile("./fixtures/click-iframe.html"))187	frame := p.MustElement("iframe").MustFrame()188	btn := frame.MustElement("button")189	g.Eq(btn.MustText(), "click me")190	frame.MustReload()191	btn = frame.MustElement("button")192	g.Eq(btn.MustText(), "click me")193	g.Has(*p.MustElement("iframe").MustAttribute("src"), "click.html")194}195func TestPageObjCrossNavigation(t *testing.T) {196	g := setup(t)197	p := g.page.MustNavigate(g.blank())198	obj := p.MustEvaluate(rod.Eval(`() => ({})`).ByObject())199	g.page.MustNavigate(g.blank())200	_, err := p.Evaluate(rod.Eval(`() => 1`).This(obj))201	g.Is(err, &rod.ErrObjectNotFound{})202	g.Has(err.Error(), "cannot find object: {\"type\":\"object\"")203}204func TestEnsureJSHelperErr(t *testing.T) {205	g := setup(t)206	p := g.page.MustNavigate(g.blank())207	g.mc.stubErr(2, proto.RuntimeCallFunctionOn{})208	g.Err(p.Elements(`button`))209}210func TestEvalOptionsString(t *testing.T) {211	g := setup(t)212	p := g.page.MustNavigate(g.srcFile("fixtures/click.html"))213	el := p.MustElement("button")214	g.Eq(rod.Eval(`() => this.parentElement`).This(el.Object).String(), "() => this.parentElement() button")215}...

evaluate

Using AI Code Generation

1import "fmt"2import "math"3type rod struct {4}5func (r rod) evaluate() float64 {6}7func main() {8	fmt.Println("Volume of rod is", r1.evaluate())9}10import "fmt"11import "math"12type rod struct {13}14func (r *rod) evaluate() float64 {15}16func main() {17	fmt.Println("Volume of rod is", r1.evaluate())18}19import "fmt"20import "math"21type rod struct {22}23func (r *rod) evaluate() float64 {24}25func main() {26	fmt.Println("Volume of rod is", r1.evaluate())27	fmt.Println("Volume of rod is", r1.evaluate())28}29import "fmt"30import "math"31type rod struct {32}33func (r *rod) evaluate() float64 {34}35func main() {

evaluate

Using AI Code Generation

1import "fmt"2type rod struct {3}4func (r *rod) evaluate() int {5}6func main() {7r1 := rod{length: 5}8fmt.Println(r1.evaluate())9}10import "fmt"11type rod struct {12}13func (r *rod) evaluate() int {14}15func main() {16r1 := rod{length: 5}17fmt.Println(r1.evaluate())18fmt.Println(r1.evaluate())19}20import "fmt"21type rod struct {22}23func (r rod) evaluate() int {24}25func main() {26r1 := rod{length: 5}27fmt.Println(r1.evaluate())28fmt.Println(r1.evaluate())29}

evaluate

Using AI Code Generation

1import (2func main() {3	r := rod{length: 12, diameter: 2}4	fmt.Println("Rod Length is ", r.length)5	fmt.Println("Rod Diameter is ", r.diameter)6	fmt.Println("Rod Surface Area is ", r.surfaceArea())7	fmt.Println("Rod Volume is ", r.volume())8}9type rod struct {10}11func (r rod) surfaceArea() float64 {12	return 2 * math.Pi * r.diameter * (r.length + r.diameter)13}14func (r rod) volume() float64 {15}

evaluate

Using AI Code Generation

1import (2func main() {3	tbl := table.New(4		table.Rows(5			[]interface{}{"John", 30, "123 Main St"},6			[]interface{}{"Jane", 28, "456 High St"},7		table.WithColumnConfigs(8			table.ColumnConfig{9				Validate: validate.IntRange(0, 100),10				Convert:  convert.ToInt(),11			},12		table.WithOpts(13			opts.WithHeader(true),14			opts.WithTitle("People"),15	tbl.Render()16}

evaluate

Using AI Code Generation

1import (2type rod struct {3}4func (r rod) evaluate() float64 {5}6func main() {7	r := rod{length: 2.5}8	fmt.Println("Area of rod is", r.evaluate())9	fmt.Println("Area of rod is", math.Pow(r.length, 2))10}

evaluate

Using AI Code Generation

1import (2func main() {3	r.SetLength(1)4	r.SetCrossSection(1)5	r.SetMaterial("Al")6	r.SetTemperature(300)7	r.SetThermalConductivity(1)8	r.SetHeatGeneration(1)9	r.SetThermalExpansionCoefficient(1)10	r.SetHeatCapacity(1)11	r.SetInitialTemperature(1)12	r.SetLeftBoundaryTemperature(1)13	r.SetRightBoundaryTemperature(1)14	r.SetTimeStep(1)15	r.SetNumberOfTimeSteps(1)16	r.SetNumberOfNodes(1)17	r.SetNumberOfElements(1)18	r.SetLength(1)19	r.SetCrossSection(1)20	r.SetMaterial("Al")21	r.SetTemperature(300)22	r.SetThermalConductivity(1)23	r.SetHeatGeneration(1)24	r.SetThermalExpansionCoefficient(1)25	r.SetHeatCapacity(1)26	r.SetInitialTemperature(1)27	r.SetLeftBoundaryTemperature(1)28	r.SetRightBoundaryTemperature(1)

evaluate

Using AI Code Generation

1import (2func main() {3 r.SetDiameter(2.5)4 r.SetLength(10)5 fmt.Println("Volume of rod is: ", r.Evaluate())6}

evaluate

Using AI Code Generation

1import (2func main() {3	fmt.Println("Enter the length of the rod")4	fmt.Scanln(&l)5	r := Rod{l}6	fmt.Println("The value of the rod is ", r.Evaluate())7}8import (9func main() {10	fmt.Println("Enter the length of the rod")11	fmt.Scanln(&l)12	r := Rod{l}13	fmt.Println("The value of the rod is ", r.Evaluate())14}15import (16func main() {17	fmt.Println("Enter the length of the rod")18	fmt.Scanln(&l)19	r := Rod{l}20	fmt.Println("The value of the rod is ", r.Evaluate())21}22import (23func main() {24	fmt.Println("Enter the length of the rod")25	fmt.Scanln(&l)26	r := Rod{l}27	fmt.Println("The value of the rod is ", r.Evaluate())28}29import (30func main() {31	fmt.Println("Enter the length of the rod")32	fmt.Scanln(&l)33	r := Rod{l}34	fmt.Println("The value of the rod is ", r.Evaluate())35}36import (37func main() {38	fmt.Println("Enter the length of the rod")39	fmt.Scanln(&l)40	r := Rod{l}41	fmt.Println("The value of the rod is ", r.Evaluate())

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