test: add allOf example (#274)

* test: add allOf example

* fix rubocop

Author: KazuCocoa

test/functional/android/android/search_context_test.rb

@@ -63,8 +63,34 @@ def test_viewmatcher
           class: 'androidx.test.espresso.matcher.ViewMatchers'
         }.to_json
         e.click
+
         @driver.find_element :accessibility_id, 'Custom View'
         @driver.back
+
+        # Multiple matchers with 'org.hamcrest.Matchers.allOf'
+        # https://developer.android.com/training/testing/espresso/recipes
+        # https://developer.android.com/reference/androidx/test/espresso/matcher/ViewMatchers#withsubstring
+        e = @driver.find_element :view_matcher, {
+          name: 'allOf',
+          args: [
+            {
+              name: 'withSubstring',
+              args: 'Acc',
+              class: 'androidx.test.espresso.matcher.ViewMatchers'
+            },
+            {
+              name: 'isDisplayed',
+              class: 'androidx.test.espresso.matcher.ViewMatchers'
+            },
+            {
+              name: 'withSubstring',
+              args: "'",
+              class: 'androidx.test.espresso.matcher.ViewMatchers'
+            }
+          ],
+          class: 'org.hamcrest.Matchers'
+        }.to_json
+        assert_equal "Access'ibility", e.text
       end
     end
   end