1 files changed, 128 insertions, 0 deletions
diff --git a/OpenKeychain/src/androidTest/java/org/sufficientlysecure/keychain/matcher/DrawableMatcher.java b/OpenKeychain/src/androidTest/java/org/sufficientlysecure/keychain/matcher/DrawableMatcher.java
new file mode 100644
index 000000000..761fb8e0b
--- /dev/null
+++ b/OpenKeychain/src/androidTest/java/org/sufficientlysecure/keychain/matcher/DrawableMatcher.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2015 Xavi Rigau <xrigau@gmail.com>
+ * Copyright (C) 2015 Vincent Breitmoser <look@my.amazin.horse>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * From the droidcon anroid espresso repository.
+ * https://github.com/xrigau/droidcon-android-espresso/
+ *
+ */
+
+package org.sufficientlysecure.keychain.matcher;
+
+
+import android.content.res.Resources;
+import android.graphics.drawable.BitmapDrawable;
+import android.graphics.drawable.Drawable;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import org.hamcrest.Description;
+import org.hamcrest.TypeSafeMatcher;
+
+
+public class DrawableMatcher extends TypeSafeMatcher<View> {
+
+    private final int mResourceId;
+    private final boolean mIgnoreFilters;
+
+    public DrawableMatcher(int resourceId, boolean ignoreFilters) {
+        super(View.class);
+        mResourceId = resourceId;
+        mIgnoreFilters = ignoreFilters;
+    }
+
+    private String resourceName = null;
+    private Drawable expectedDrawable = null;
+
+    @Override
+    public boolean matchesSafely(View target) {
+        if (expectedDrawable == null) {
+            loadDrawableFromResources(target.getResources());
+        }
+        if (invalidExpectedDrawable()) {
+            return false;
+        }
+
+        if (target instanceof ImageView) {
+            return hasImage((ImageView) target) || hasBackground(target);
+        }
+        if (target instanceof TextView) {
+            return hasCompoundDrawable((TextView) target) || hasBackground(target);
+        }
+        return hasBackground(target);
+    }
+
+    private void loadDrawableFromResources(Resources resources) {
+        try {
+            expectedDrawable = resources.getDrawable(mResourceId);
+            resourceName = resources.getResourceEntryName(mResourceId);
+        } catch (Resources.NotFoundException ignored) {
+            // view could be from a context unaware of the resource id.
+        }
+    }
+
+    private boolean invalidExpectedDrawable() {
+        return expectedDrawable == null;
+    }
+
+    private boolean hasImage(ImageView target) {
+        return isSameDrawable(target.getDrawable());
+    }
+
+    private boolean hasCompoundDrawable(TextView target) {
+        for (Drawable drawable : target.getCompoundDrawables()) {
+            if (isSameDrawable(drawable)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private boolean hasBackground(View target) {
+        return isSameDrawable(target.getBackground());
+    }
+
+    private boolean isSameDrawable(Drawable drawable) {
+        if (drawable == null) {
+            return false;
+        }
+        // if those are both bitmap drawables, compare their bitmaps (ignores color filters, which is what we want!)
+        if (mIgnoreFilters && drawable instanceof BitmapDrawable && expectedDrawable instanceof BitmapDrawable) {
+            return ((BitmapDrawable) drawable).getBitmap().equals(((BitmapDrawable) expectedDrawable).getBitmap());
+        }
+        return expectedDrawable.getConstantState().equals(drawable.getConstantState());
+    }
+
+    @Override
+    public void describeTo(Description description) {
+        description.appendText("with drawable from resource id: ");
+        description.appendValue(mResourceId);
+        if (resourceName != null) {
+            description.appendText("[");
+            description.appendText(resourceName);
+            description.appendText("]");
+        }
+    }
+
+    public static DrawableMatcher withDrawable(int resourceId, boolean ignoreFilters) {
+        return new DrawableMatcher(resourceId, ignoreFilters);
+    }
+    public static DrawableMatcher withDrawable(int resourceId) {
+        return new DrawableMatcher(resourceId, true);
+    }
+
+}