Added minimize keyword

atest/acceptance/windows.robot

@@ -114,6 +114,30 @@ Set Window Position using strings
     Should Be Equal    ${x}    ${200}
     Should Be Equal    ${y}    ${100}
 
+Test Minimize and Maximize Will Actually Move and Resize Window
+    Set Window Position    300    200
+    Set Window Size    400    300
+    ${isHidden}=    Execute Javascript   return document.hidden;
+    Should Not Be True  ${isHidden}
+
+    Minimize Browser Window
+
+    ${isHidden}=    Execute Javascript   return document.hidden;
+    Should Be True  ${isHidden}
+
+    Maximize Browser Window
+
+    ${isHidden}=    Execute Javascript   return document.hidden;
+    Should Not Be True  ${isHidden}
+
+    ${x}    ${y}=    Get Window Position
+    ${width}    ${height}=    Get Window Size
+    # Windows: Can't test for zero in multi-monitor setups
+    Should Not Be Equal    ${x}    ${300}
+    Should Not Be Equal    ${y}    ${200}
+    Should Be True   ${width} > 400
+    Should Be True   ${height} > 300
+
 Select Window By Title After Close Window
     [Tags]    Known Issue Internet Explorer    Known Issue Safari
     Cannot Be Executed in IE

src/SeleniumLibrary/keywords/window.py

@@ -186,6 +186,11 @@ def maximize_browser_window(self):
         """Maximizes current browser window."""
         self.driver.maximize_window()
 
+    @keyword
+    def minimize_browser_window(self):
+        """Minimizes current browser window."""
+        self.driver.minimize_window()
+
     @keyword
     def get_window_size(self, inner: bool = False) -> Tuple[float, float]:
         """Returns current window width and height as integers.

utest/test/api/test_plugins.py

@@ -22,7 +22,7 @@ def setUpClass(cls):
     def test_no_libraries(self):
         for item in [None, "None", ""]:
             sl = SeleniumLibrary(plugins=item)
-            self.assertEqual(len(sl.get_keyword_names()), 177)
+            self.assertEqual(len(sl.get_keyword_names()), 178)
 
     def test_parse_library(self):
         plugin = "path.to.MyLibrary"