Execute javascript code (#16)

* Add javascript keyword

* Update keywords doc

Author: atthaboon

Examples/javascript-demo.robot

@@ -0,0 +1,23 @@
+*** Settings ***
+Library    PuppeteerLibrary
+Test Setup    Open browser to test page    
+Test Teardown    Close Browser
+
+
+*** Variables ***
+${HOME_PAGE_URL}    http://127.0.0.1:7272
+
+
+*** Test Cases ***
+Execute javascript command
+    Handle Alert    ACCEPT
+    Execute Javascript    console.log('Hi five');
+    Execute Javascript    alert('Hello world');
+    
+
+*** Keywords ***
+Open browser to test page
+    ${HEADLESS}     Get variable value    ${HEADLESS}    ${False}
+    &{options} =    create dictionary   headless=${HEADLESS}
+    Open browser    ${HOME_PAGE_URL}   options=${options}
+

PuppeteerLibrary/__init__.py

@@ -3,7 +3,6 @@
 from robot.api import logger
 from pyppeteer.browser import Browser
 from robot.libraries.BuiltIn import BuiltIn
-
 from PuppeteerLibrary.custom_elements.SPage import SPage
 from PuppeteerLibrary.base.robotlibcore import DynamicCore
 from PuppeteerLibrary.keywords import (
@@ -14,6 +13,8 @@
     ElementKeywordsAsync,
     FormElementKeywords,
     FormElementKeywordsAsync,
+    JavascriptKeywords,
+    JavascriptKeywordsAsync,
     ScreenshotKeywords,
     ScreenshotKeywordsAsync,
     UtilityKeywords,
@@ -77,6 +78,7 @@ def __init__(self):
             BrowserManagementKeywords(self),
             ElementKeywords(self),
             FormElementKeywords(self),
+            JavascriptKeywords(self),
             ScreenshotKeywords(self),
             UtilityKeywords(self),
             WaitingKeywords(self)
@@ -87,6 +89,7 @@ def __init__(self):
             AlertKeywordsAsync(self),
             ElementKeywordsAsync(self),
             FormElementKeywordsAsync(self),
+            JavascriptKeywordsAsync(self),
             ScreenshotKeywordsAsync(self),
             WaitingKeywordsAsync(self)
         ]

PuppeteerLibrary/keywords/__init__.py

@@ -5,6 +5,8 @@
 from .element_async import ElementKeywordsAsync
 from .formelement import FormElementKeywords
 from .formelement_async import FormElementKeywordsAsync
+from .javascript import JavascriptKeywords
+from .javascript_async import JavascriptKeywordsAsync
 from .screenshot import ScreenshotKeywords
 from .screenshot_async import ScreenshotKeywordsAsync
 from .utility import UtilityKeywords

PuppeteerLibrary/keywords/javascript.py

@@ -0,0 +1,25 @@
+from PuppeteerLibrary.base.robotlibcore import keyword
+from PuppeteerLibrary.base.librarycomponent import LibraryComponent
+from PuppeteerLibrary.keywords.javascript_async import JavascriptKeywordsAsync
+
+
+class JavascriptKeywords(LibraryComponent):
+
+    def __init__(self, ctx):
+        self.ctx = ctx
+        self.async_func = JavascriptKeywordsAsync(self.ctx)
+
+    @keyword
+    def execute_javascript(self, code):
+        """Executes the given JavaScript code
+
+        Examples:
+        | `Handle Alert`       | ACCEPT                |
+        | `Execute Javascript` | alert('Hello world'); |
+
+
+        Examples:
+        | `Execute Javascript` | console.log('Hi 5');  |
+
+        """
+        return self.loop.run_until_complete(self.async_func.execute_javascript_async(code))

PuppeteerLibrary/keywords/javascript_async.py

@@ -0,0 +1,12 @@
+from PuppeteerLibrary.base.robotlibcore import keyword
+from PuppeteerLibrary.base.librarycomponent import LibraryComponent
+
+
+class JavascriptKeywordsAsync(LibraryComponent):
+
+    def __init__(self, ctx):
+        self.ctx = ctx
+
+    @keyword
+    async def execute_javascript_async(self, code):
+        return await self.ctx.get_current_page().evaluate(code)