Add BaristaClickableAssertions (AdevintaSpain#277)

* Add new methods for asserting whether or not views are clickable

* Write tests for assertClickable and assertNotClickable

* Add clickable assertions

* Remove IdRes annotation from resId parameters

The resId parameter value can be either a view ID or a string resource ID, therefore it does not make sense for it to be annotated with IdRes.

README.md

@@ -167,11 +167,21 @@ assertUnchecked("Unchecked checkbox");
 assertUnchecked(R.string.unchecked_checkbox);
 assertUnchecked(R.id.unchecked_checkbox);
 
+// Is this view clickable?
+assertClickable("Hello world")
+assertClickable(R.string.hello_world)
+assertClickable(R.id.button)
+
+// ...or not?
+assertNotClickable("Hello world")
+assertNotClickable(R.string.hello_world)
+assertNotClickable(R.id.button)
+
 // Does this view have the focus?
 assertFocused(R.id.focused_view)
 assertFocused("Button")
 
-// ... or not?
+// ...or not?
 assertNotFocused(R.id.focused_view)
 assertNotFocused("Button")
 

library/src/main/java/com/schibsted/spain/barista/assertion/BaristaClickableAssertions.kt

@@ -0,0 +1,30 @@
+package com.schibsted.spain.barista.assertion
+
+import android.support.test.espresso.matcher.ViewMatchers.isClickable
+import android.support.test.espresso.matcher.ViewMatchers.withText
+import com.schibsted.spain.barista.internal.assertAny
+import com.schibsted.spain.barista.internal.util.resourceMatcher
+import org.hamcrest.Matchers.not
+
+object BaristaClickableAssertions {
+
+  @JvmStatic
+  fun assertClickable(resId: Int) {
+    resId.resourceMatcher().assertAny(isClickable())
+  }
+
+  @JvmStatic
+  fun assertClickable(text: String) {
+    withText(text).assertAny(isClickable())
+  }
+
+  @JvmStatic
+  fun assertNotClickable(resId: Int) {
+    resId.resourceMatcher().assertAny(not(isClickable()))
+  }
+
+  @JvmStatic
+  fun assertNotClickable(text: String) {
+    withText(text).assertAny(not(isClickable()))
+  }
+}

sample/src/androidTest/java/com/schibsted/spain/barista/sample/AssertionsTest.java

@@ -15,6 +15,8 @@
 import static com.schibsted.spain.barista.assertion.BaristaBackgroundAssertions.assertHasNoBackground;
 import static com.schibsted.spain.barista.assertion.BaristaCheckedAssertions.assertChecked;
 import static com.schibsted.spain.barista.assertion.BaristaCheckedAssertions.assertUnchecked;
+import static com.schibsted.spain.barista.assertion.BaristaClickableAssertions.assertClickable;
+import static com.schibsted.spain.barista.assertion.BaristaClickableAssertions.assertNotClickable;
 import static com.schibsted.spain.barista.assertion.BaristaEnabledAssertions.assertDisabled;
 import static com.schibsted.spain.barista.assertion.BaristaEnabledAssertions.assertEnabled;
 import static com.schibsted.spain.barista.assertion.BaristaFocusedAssertions.assertFocused;
@@ -156,6 +158,58 @@ public void checkNonCheckableView_breaksWhenCheckStateAsserted() {
     }
   }
 
+  @Test
+  public void checkClickableView() {
+    assertClickable(R.id.enabled_button);
+    assertClickable(R.string.enabled_button);
+    assertClickable("Enabled button");
+  }
+
+  @Test
+  public void checkClickableView_breaksWhenNeeded() {
+    try {
+      assertClickable(R.id.disabled_button);
+      fail();
+    } catch (Throwable expected) {
+    }
+    try {
+      assertClickable(R.string.disabled_button);
+      fail();
+    } catch (Throwable expected) {
+    }
+    try {
+      assertClickable("Disabled button");
+      fail();
+    } catch (Throwable expected) {
+    }
+  }
+
+  @Test
+  public void checkNonClickableView() {
+    assertNotClickable(R.id.disabled_button);
+    assertNotClickable(R.string.disabled_button);
+    assertNotClickable("Disabled button");
+  }
+
+  @Test
+  public void checkNonClickableView_breaksWhenNeeded() {
+    try {
+      assertNotClickable(R.id.enabled_button);
+      fail();
+    } catch (Throwable expected) {
+    }
+    try {
+      assertNotClickable(R.string.enabled_button);
+      fail();
+    } catch (Throwable expected) {
+    }
+    try {
+      assertNotClickable("Enabled button");
+      fail();
+    } catch (Throwable expected) {
+    }
+  }
+
   @Test
   public void methodsByIdLaunchExceptionWhenThePassedIdIsNotAResIdOrAStringId() {
     try {

sample/src/main/res/layout/activity_main.xml

@@ -70,13 +70,16 @@
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="@string/enabled_button"
+      android:clickable="true"
+      android:focusable="true"
       />
 
   <Button
       android:id="@+id/disabled_button"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:enabled="false"
+      android:clickable="false"
       android:text="@string/disabled_button"
       />