[rb] screenshot size is apparently different on mac and linux

titusfortner · titusfortner · commit 03098e0b4218 · 2022-05-07T16:52:08.000-05:00
diff --git a/rb/spec/integration/selenium/webdriver/firefox/driver_spec.rb b/rb/spec/integration/selenium/webdriver/firefox/driver_spec.rb
@@ -45,9 +45,20 @@ module Firefox
           end
 
           it 'should print full page' do
+            viewport_width = driver.execute_script("return window.innerWidth;")
+            viewport_height = driver.execute_script("return window.innerHeight;")
+
             path = "#{Dir.tmpdir}/test#{SecureRandom.urlsafe_base64}.png"
             screenshot = driver.save_full_page_screenshot(path)
-            expect(File.read(screenshot)[0x10..0x18].unpack('NN').last).to be > 2600
+
+            if Platform.linux?
+              expect(File.read(screenshot)[0x10..0x18].unpack('NN')).first.to be >= viewport_width
+              expect(File.read(screenshot)[0x10..0x18].unpack('NN')).last.to be > viewport_height
+            else
+              expect((File.read(screenshot)[0x10..0x18].unpack('NN')).first/2).to be >= viewport_width
+              expect((File.read(screenshot)[0x10..0x18].unpack('NN')).last/2).to be > viewport_height
+            end
+
           ensure
             File.delete(path) if File.exist?(path)
           end
diff --git a/rb/spec/integration/selenium/webdriver/takes_screenshot_spec.rb b/rb/spec/integration/selenium/webdriver/takes_screenshot_spec.rb
@@ -81,20 +81,32 @@ def save_screenshot_and_assert(source, path)
         end
 
         it 'takes viewport screenshot by default' do
-          viewport_width = driver.execute_script("return window.innerWidth;") * 2
-          viewport_height = driver.execute_script("return window.innerHeight;") * 2
+          viewport_width = driver.execute_script("return window.innerWidth;")
+          viewport_height = driver.execute_script("return window.innerHeight;")
 
           screenshot = driver.save_screenshot path
-          expect(File.read(screenshot)[0x10..0x18].unpack('NN')).to eq([viewport_width, viewport_height])
+
+          if Platform.linux?
+            expect(File.read(screenshot)[0x10..0x18].unpack('NN')).first.to be <= viewport_width
+            expect(File.read(screenshot)[0x10..0x18].unpack('NN')).last.to be <= viewport_height
+          else
+            expect((File.read(screenshot)[0x10..0x18].unpack('NN')).first/2).to be <= viewport_width
+            expect((File.read(screenshot)[0x10..0x18].unpack('NN')).last/2).to be <= viewport_height
+          end
         end
 
         it 'takes full page screenshot', exclusive: {browser: :firefox} do
-          viewport_width = driver.execute_script("return window.innerWidth;") * 2
-          viewport_height = driver.execute_script("return window.innerHeight;") * 2
+          viewport_width = driver.execute_script("return window.innerWidth;")
+          viewport_height = driver.execute_script("return window.innerHeight;")
 
           screenshot = driver.save_screenshot path, full_page: true
-          expect(File.read(screenshot)[0x10..0x18].unpack1('NN')).to eq viewport_width
-          expect(File.read(screenshot)[0x10..0x18].unpack('NN').last).to be > viewport_height
+          if Platform.linux?
+            expect(File.read(screenshot)[0x10..0x18].unpack('NN')).first.to be >= viewport_width
+            expect(File.read(screenshot)[0x10..0x18].unpack('NN')).last.to be > viewport_height
+          else
+            expect((File.read(screenshot)[0x10..0x18].unpack('NN')).first/2).to be >= viewport_width
+            expect((File.read(screenshot)[0x10..0x18].unpack('NN')).last/2).to be > viewport_height
+          end
         end
 
         it 'does not take full page screenshot', exclude: {browser: :firefox} do
