1 files changed, 207 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/ExpressionTest.java b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/ExpressionTest.java
new file mode 100644
index 0000000000..c4ff79b053
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/androidTest/java/com/mapbox/mapboxsdk/testapp/style/ExpressionTest.java
@@ -0,0 +1,207 @@
+package com.mapbox.mapboxsdk.testapp.style;
+
+import android.graphics.Color;
+import android.support.test.runner.AndroidJUnit4;
+
+import com.mapbox.mapboxsdk.style.expressions.Expression;
+import com.mapbox.mapboxsdk.style.layers.FillLayer;
+import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
+import com.mapbox.mapboxsdk.style.sources.Source;
+import com.mapbox.mapboxsdk.testapp.R;
+import com.mapbox.mapboxsdk.testapp.activity.BaseActivityTest;
+import com.mapbox.mapboxsdk.testapp.activity.espresso.EspressoTestActivity;
+import com.mapbox.mapboxsdk.testapp.utils.ResourceUtils;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.io.IOException;
+
+import timber.log.Timber;
+
+import static com.mapbox.mapboxsdk.style.expressions.Expression.exponential;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.get;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.interpolate;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.literal;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.match;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.rgb;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.rgba;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.step;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.stop;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.string;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.toColor;
+import static com.mapbox.mapboxsdk.style.expressions.Expression.zoom;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillAntialias;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillColor;
+import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillOutlineColor;
+import static com.mapbox.mapboxsdk.testapp.action.MapboxMapAction.invoke;
+import static org.junit.Assert.assertEquals;
+
+@RunWith(AndroidJUnit4.class)
+public class ExpressionTest extends BaseActivityTest {
+
+  private FillLayer layer;
+
+  @Test
+  public void testConstantExpressionConversion() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create color expression
+      Expression inputExpression = rgba(255.0f, 0.0f, 0.0f, 1.0f);
+
+      // set color expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get color value
+      int color = layer.getFillColor().getColorInt();
+
+      // compare
+      assertEquals("input expression should match", Color.RED, color);
+    });
+  }
+
+  @Test
+  public void testGetExpressionWrapping() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create get expression
+      Expression inputExpression = get("fill");
+
+      // set get expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get actual expression
+      Expression actualExpression = layer.getFillColor().getExpression();
+
+      // create wrapped expected expression
+      Expression expectedExpression = toColor(get("fill"));
+
+      // compare
+      assertEquals("input expression should match", expectedExpression, actualExpression);
+    });
+  }
+
+  @Test
+  public void testCameraFunction() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create camera function expression
+      Expression inputExpression = interpolate(
+        exponential(0.5f), zoom(),
+        stop(1.0f, rgba(255.0f, 0.0f, 0.0f, 1.0f)),
+        stop(5.0f, rgba(0.0f, 0.0f, 255.0f, 1.0f)),
+        stop(10.0f, rgba(0.0f, 255.0f, 0.0f, 1.0f))
+      );
+
+      // set camera function expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get camera function expression
+      Expression outputExpression = layer.getFillColor().getExpression();
+
+      // compare
+      assertEquals("input expression should match", inputExpression, outputExpression);
+    });
+  }
+
+  @Test
+  public void testSourceFunction() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create camera function expression
+      Expression inputExpression = toColor(get("fill"));
+
+      // set camera function expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get camera function expression
+      Expression outputExpression = layer.getFillColor().getExpression();
+
+      // compare
+      assertEquals("input expression should match", inputExpression, outputExpression);
+    });
+  }
+
+  @Test
+  public void testCompositeFunction() {
+    validateTestSetup();
+    setupStyle();
+    Timber.i("camera function");
+
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // create camera function expression
+      Expression inputExpression = step(zoom(),
+        rgba(255.0f, 255.0f, 255.0f, 1.0f),
+        stop(7.0f, match(
+          string(get("name")),
+          literal("Westerpark"), rgba(255.0f, 0.0f, 0.0f, 1.0f),
+          rgba(255.0f, 255.0f, 255.0f, 1.0f)
+        )),
+        stop(8.0f, match(
+          string(get("name")),
+          literal("Westerpark"), rgba(0.0f, 0.0f, 255.0f, 1.0f),
+          rgba(255.0f, 255.0f, 255.0f, 1.0f)
+        ))
+      );
+
+      // set camera function expression
+      layer.setProperties(
+        fillColor(inputExpression)
+      );
+
+      // get camera function expression
+      Expression outputExpression = layer.getFillColor().getExpression();
+
+      // compare
+      assertEquals("input expression should match", inputExpression, outputExpression);
+    });
+  }
+
+  private void setupStyle() {
+    invoke(mapboxMap, (uiController, mapboxMap) -> {
+      // Add a source
+      Source source;
+      try {
+        source = new GeoJsonSource("amsterdam-parks-source",
+          ResourceUtils.readRawResource(rule.getActivity(), R.raw.amsterdam));
+        mapboxMap.addSource(source);
+      } catch (IOException ioException) {
+        return;
+      }
+
+      // Add a fill layer
+      mapboxMap.addLayer(layer = new FillLayer("amsterdam-parks-layer", source.getId())
+        .withProperties(
+          fillColor(rgba(0.0f, 0.0f, 0.0f, 0.5f)),
+          fillOutlineColor(rgb(0, 0, 255)),
+          fillAntialias(true)
+        )
+      );
+    });
+  }
+
+  @Override
+  protected Class getActivityClass() {
+    return EspressoTestActivity.class;
+  }
+}