Java Matcher.describeTo方法代碼示例

import org.hamcrest.Matcher; //導入方法依賴的package包/類
private static Matcher<View> childAtPosition(
        final Matcher<View> parentMatcher, final int position) {

    return new TypeSafeMatcher<View>() {
        @Override
        public void describeTo(Description description) {
            description.appendText("Child at position " + position + " in parent ");
            parentMatcher.describeTo(description);
        }

        @Override
        public boolean matchesSafely(View view) {
            ViewParent parent = view.getParent();
            return parent instanceof ViewGroup && parentMatcher.matches(parent)
                    && view.equals(((ViewGroup) parent).getChildAt(position));
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
private static Matcher<View> childAtPosition(final Matcher<View> parentMatcher, final int position) {
    
    return new TypeSafeMatcher<View>() {
        @Override
        public void describeTo(Description description) {
            description.appendText("Child at position " + position + " in parent ");
            parentMatcher.describeTo(description);
        }
        
        @Override
        public boolean matchesSafely(View view) {
            ViewParent parent = view.getParent();
            return parent instanceof ViewGroup && parentMatcher.matches(parent) && view.equals(((ViewGroup) parent).getChildAt(position));
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
private static Matcher<View> childAtPosition(final Matcher<View> parentMatcher,
        final int position) {

    return new TypeSafeMatcher<View>() {
        @Override
        public void describeTo(Description description) {
            description.appendText("Child at position " + position + " in parent ");
            parentMatcher.describeTo(description);
        }

        @Override
        public boolean matchesSafely(View view) {
            ViewParent parent = view.getParent();
            return parent instanceof ViewGroup && parentMatcher.matches(parent) && view.equals(
                    ((ViewGroup) parent).getChildAt(position));
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
private static Matcher<View> childAtPosition(
        final Matcher<View> parentMatcher, @SuppressWarnings("SameParameterValue") final int position) {

    return new TypeSafeMatcher<View>() {
        @Override
        public void describeTo(Description description) {
            description.appendText("Child at position " + position + " in parent ");
            parentMatcher.describeTo(description);
        }

        @Override
        public boolean matchesSafely(View view) {
            ViewParent parent = view.getParent();
            return parent instanceof ViewGroup && parentMatcher.matches(parent)
                    && view.equals(((ViewGroup) parent).getChildAt(position));
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
public static Matcher<View> withIndex(final Matcher<View> matcher, final int index) {
    return new TypeSafeMatcher<View>() {
        int currentIndex = 0;

        @Override
        public void describeTo(Description description) {
            description.appendText("with index: ");
            description.appendValue(index);
            matcher.describeTo(description);
        }

        @Override
        public boolean matchesSafely(View view) {
            return matcher.matches(view) && currentIndex++ == index;
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
/**
 * <p>
 * Returns a matcher that matches an item view at the given position
 * in the RecyclerView matched by {@code recyclerViewMatcher}.
 * </p>
 * <p>
 * If the item view at the given position is not laid out,
 * the matcher returned by this method will not match anything.
 * Call {@link android.support.test.espresso.contrib.RecyclerViewActions#scrollToPosition(int)}
 * with the same position prior to calling this method
 * in order to ensure that the item view is laid out.
 * </p>
 * <pre><code>
 *     onView(withId(R.id.recyclerView).perform(RecyclerViewActions.scrollToPosition(position);
 * </code></pre>
 *
 * @param recyclerViewMatcher a matcher for RecyclerView containing the item view.
 * @param position            position of the item view in RecyclerView
 */
public static Matcher<View> withItemViewAtPosition(final Matcher<View> recyclerViewMatcher, final int position) {
    return new TypeSafeMatcher<View>() {
        @Override
        protected boolean matchesSafely(View view) {
            ViewParent parent = view.getParent();
            if (!(parent instanceof RecyclerView) || !recyclerViewMatcher.matches(parent)) {
                return false;
            }
            RecyclerView.ViewHolder viewHolder = ((RecyclerView) parent).findViewHolderForAdapterPosition(position);
            return viewHolder != null && viewHolder.itemView.equals(view);
        }

        @Override
        public void describeTo(Description description) {
            description.appendText("Item view at position " + position + " in recycler view ");
            recyclerViewMatcher.describeTo(description);
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
private static Matcher<View> withIndex(final Matcher<View> matcher, final int index) {
    return new TypeSafeMatcher<View>() {
        int currentIndex = 0;

        @Override
        public void describeTo(Description description) {
            description.appendText("with index: ");
            description.appendValue(index);
            matcher.describeTo(description);
        }

        @Override
        public boolean matchesSafely(View view) {
            return matcher.matches(view) && currentIndex++ == index;
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
private static Matcher<Object> withCollapsingToolbarTitle(
        final Matcher<CharSequence> textMatcher) {
    return new BoundedMatcher<Object, CollapsingToolbarLayout>(CollapsingToolbarLayout.class) {

        @Override
        public void describeTo(Description description) {
            description.appendText("with collapsing toolbar title: ");
            textMatcher.describeTo(description);
        }

        @Override
        protected boolean matchesSafely(CollapsingToolbarLayout collapsingToolbarLayout) {
            return textMatcher.matches(collapsingToolbarLayout.getTitle());
        }

    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
/**
 * Returns a matcher that matches a {@link View} that is a child of the described parent
 * at the specified index.
 *
 * @param parentMatcher A matcher that describes the view's parent.
 * @param childIndex The index of the view at which it is a child of the described parent.
 */
private static Matcher<View> isNthChildOf(final Matcher<View> parentMatcher, final int childIndex) {
    return new TypeSafeMatcher<View>() {
        @Override
        public void describeTo(Description description) {
            description.appendText("is child at index "+childIndex+" of view matched by parentMatcher: ");
            parentMatcher.describeTo(description);
        }

        @Override
        public boolean matchesSafely(View view) {
            ViewGroup parent = (ViewGroup) view.getParent();
            return parentMatcher.matches(parent) && view.equals(parent.getChildAt(childIndex));
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
private static Matcher<Object> withToolbarTitle(final Matcher<CharSequence> textMatcher) {
    return new BoundedMatcher<Object, Toolbar>(Toolbar.class) {
        @Override
        public boolean matchesSafely(Toolbar toolbar) {
            return textMatcher.matches(toolbar.getTitle());
        }

        @Override
        public void describeTo(Description description) {
            description.appendText("with toolbar title: ");
            textMatcher.describeTo(description);
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
public static Matcher<View> withTextInputLayoutHint(final Matcher<String> stringMatcher) {
    return new BoundedMatcher<View, TextInputLayout>(TextInputLayout.class) {
        @Override
        public void describeTo(Description description) {
            description.appendText("with hint: ");
            stringMatcher.describeTo(description);
        }

        @Override
        public boolean matchesSafely(TextInputLayout textInputLayout) {
            return stringMatcher.matches(textInputLayout.getHint());
        }
    };
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
@Test
public void testIsJsonLongMatcherUpdatesDescription() {
	Matcher<JsonElement> matcher = aJsonLong(equalTo(23L));

	Description description = new StringDescription();

	matcher.describeTo(description);

	String expected = "a number element with a value that is <23L>";

	assertThat(description.toString(), is(expected));
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
@Test
public void testIsJsonMatcherUpdatesDescription() {
	Conditions conditions = _builder.build();

	Matcher<String> stringMatcher = aJsonObjectStringWith(conditions);

	Description description = new StringDescription();

	stringMatcher.describeTo(description);

	assertThat(description.toString(), is("a JSON object where {\n}"));
}
 

import org.hamcrest.Matcher; //導入方法依賴的package包/類
@Test
public void testIsJsonBooleanMatcherUpdatesDescription() {
	Matcher<JsonElement> matcher = aJsonBoolean(false);

	Description description = new StringDescription();

	matcher.describeTo(description);

	String expected = "a boolean element with a value that is <false>";

	assertThat(description.toString(), is(expected));
}