Downloading File

To handle Download functionality with selenium, we need to do some settings to the browser using Firefox profile using preferences, so that it automatically download the files to the defined folder. Then we can write code to check if the folder is downloaded or not.

setPreference("browser.download.folderList", 2);
Default Value: 1
The value of browser.download.folderList can be set to either 0, 1, or 2. When set to 0, Firefox will save all files downloaded via the browser on the user's desktop. When set to 1, these downloads are stored in the Downloads folder. When set to 2, the location specified for the most recent download is utilized again.

setPreference("browser.download.manager.showWhenStarting", false);
Default Value: true
The browser.download.manager.showWhenStarting Preference in Firefox's about:config interface allows the user to specify whether or not the Download Manager window is displayed when a file download is initiated.

browser. helperApps. alwaysAsk. force
True: Always ask what to do with an unknown MIME type, and disable option to remember what to open it with False (default): Opposite of above

browser. helperApps. neverAsk. saveToDisk
A comma-separated list of MIME types to save to disk without asking what to use to open the file. Default value is an empty string.

browser. helperApps. neverAsk. openFile
A comma-separated list of MIME types to open directly without asking for confirmation. Default value is an empty string.

browser. download. dir
The last directory used for saving a file from the "What should (browser) do with this file?" dialog.

browser.download.manager.alertOnEXEOpen
True (default): warn the user attempting to open an executable from the Download Manager
False: display no warning and allow executable to be run
Note: In Firefox, this can be changed by checking the "Don't ask me this again" box when you encounter the alert.

browser. download. manager. closeWhenDone
True: Close the Download Manager when all downloads are complete
False (default): Opposite of the above

browser. download. manager. focusWhenStarting
True: Set the Download Manager window as active when starting a download
False (default): Leave the window in the background when starting a download

Scenario 2 :
Download using Chrome Browser

We will be taking help of ChromePreferences, ChromeOptions and DesiredCapabilities of Chrome in selenium.