b8efcf0691
While at it, remove the error return from BrowserOption, to make it consistent with all the other option func types. We don't have a good test for this feature yet, but at least we check that it doesn't crash or error via an example. Fixes #292.
101 lines
2.1 KiB
Go
101 lines
2.1 KiB
Go
package chromedp_test
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import (
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"bytes"
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"context"
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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"github.com/chromedp/chromedp"
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)
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func ExampleTitle() {
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ctx, cancel := chromedp.NewContext(context.Background())
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defer cancel()
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var title string
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if err := chromedp.Run(ctx,
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chromedp.Navigate("https://github.com/chromedp/chromedp/issues"),
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chromedp.WaitVisible("#start-of-content", chromedp.ByID),
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chromedp.Title(&title),
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); err != nil {
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panic(err)
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}
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fmt.Println(title)
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// no expected output, to not run this test as part of 'go test'; it's
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// too slow, requiring internet access.
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}
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func ExampleExecAllocator() {
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dir, err := ioutil.TempDir("", "chromedp-example")
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if err != nil {
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panic(err)
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}
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defer os.RemoveAll(dir)
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opts := []chromedp.ExecAllocatorOption{
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chromedp.NoFirstRun,
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chromedp.NoDefaultBrowserCheck,
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chromedp.Headless,
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chromedp.DisableGPU,
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chromedp.UserDataDir(dir),
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}
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allocCtx, cancel := chromedp.NewExecAllocator(context.Background(), opts...)
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defer cancel()
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// also set up a custom logger
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taskCtx, cancel := chromedp.NewContext(allocCtx, chromedp.WithLogf(log.Printf))
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defer cancel()
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// ensure that the browser process is started
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if err := chromedp.Run(taskCtx); err != nil {
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panic(err)
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}
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path := filepath.Join(dir, "DevToolsActivePort")
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bs, err := ioutil.ReadFile(path)
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if err != nil {
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panic(err)
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}
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lines := bytes.Split(bs, []byte("\n"))
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fmt.Printf("DevToolsActivePort has %d lines\n", len(lines))
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// Output:
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// DevToolsActivePort has 2 lines
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}
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func ExampleNewContext_manyTabs() {
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// new browser, first tab
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ctx1, cancel := chromedp.NewContext(context.Background())
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defer cancel()
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// ensure the first tab is created
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if err := chromedp.Run(ctx1); err != nil {
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panic(err)
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}
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// same browser, second tab
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ctx2, _ := chromedp.NewContext(ctx1)
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// ensure the second tab is created
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if err := chromedp.Run(ctx2); err != nil {
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panic(err)
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}
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c1 := chromedp.FromContext(ctx1)
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c2 := chromedp.FromContext(ctx2)
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fmt.Printf("Same browser: %t\n", c1.Browser == c2.Browser)
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fmt.Printf("Same tab: %t\n", c1.Target == c2.Target)
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// Output:
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// Same browser: true
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// Same tab: false
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}
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