Make test adjustments

Author: bdero

entity/entity_unittests.cc

@@ -681,22 +681,24 @@ TEST_F(EntityTest, GaussianBlurFilter) {
   auto callback = [&](ContentContext& context, RenderPass& pass) -> bool {
     if (first_frame) {
       first_frame = false;
-      ImGui::SetNextWindowSize({450, 150});
-      ImGui::SetNextWindowPos({200, 450});
+      ImGui::SetNextWindowSize({500, 170});
+      ImGui::SetNextWindowPos({300, 550});
     }
 
     ImGui::Begin("Controls");
+    static float blur_amount[2] = {20, 20};
+    ImGui::SliderFloat2("Blur", &blur_amount[0], 0, 200);
+    static Color cover_color(1, 0, 0, 0.2);
+    ImGui::ColorEdit4("Cover color", reinterpret_cast<float*>(&cover_color));
     static float offset[2] = {500, 400};
     ImGui::SliderFloat2("Translation", &offset[0], 0,
                         pass.GetRenderTargetSize().width);
     static float rotation = 0;
     ImGui::SliderFloat("Rotation", &rotation, 0, kPi * 2);
-    static float scale[2] = {1, 1};
+    static float scale[2] = {0.8, 0.8};
     ImGui::SliderFloat2("Scale", &scale[0], 0, 3);
     static float skew[2] = {0, 0};
     ImGui::SliderFloat2("Skew", &skew[0], -3, 3);
-    static float blur_amount[2] = {20, 20};
-    ImGui::SliderFloat2("Blur", &blur_amount[0], 0, 200);
     ImGui::End();
 
     auto blend = FilterContents::MakeBlend(Entity::BlendMode::kPlus,
@@ -716,12 +718,16 @@ TEST_F(EntityTest, GaussianBlurFilter) {
     entity.SetContents(blur);
     entity.SetTransformation(ctm);
 
+    entity.Render(context, pass);
+
+    // The following entity renders the expected transformed input.
     Entity cover_entity;
     cover_entity.SetPath(PathBuilder{}.AddRect(rect).TakePath());
-    cover_entity.SetContents(SolidColorContents::Make(Color(1, 0, 0, 0.5)));
+    cover_entity.SetContents(SolidColorContents::Make(cover_color));
     cover_entity.SetTransformation(ctm);
 
-    return entity.Render(context, pass) && cover_entity.Render(context, pass);
+    cover_entity.Render(context, pass);
+    return true;
   };
   ASSERT_TRUE(OpenPlaygroundHere(callback));
 }