Test waveform RGB/BGR handling

tests/colorscopestest.cpp

 #include "test_utils.hpp"
 
+#include "scopes/colorscopes/colorconstants.h"
 #include "scopes/colorscopes/vectorscopegenerator.h"
+#include "scopes/colorscopes/waveformgenerator.h"
 
-TEST_CASE("Vectorscope")
+// test for a bug where pixels were assumed to be RGB which was not true on
+// Windows, resulting in red and blue switched. BUG: 453149
+// Multiple scopes are affected, including vectorscope and waveform
+TEST_CASE("Colorscope RGB/BGR handling")
 {
     // create a fully red image
     QImage inputImage(480, 320, QImage::Format_RGB32);
     inputImage.fill(Qt::red);
-    VectorscopeGenerator vectorscope{};
+    QImage bgrInputImage = inputImage.convertToFormat(QImage::Format_BGR30);
 
     QSize scopeSize{256, 256};
 
-    // test for a bug where pixels were assumed to be RGB which was not true on
-    // Windows, resulting in red and blue switched. BUG: 453149
     SECTION("Vectorscope handles both RGB and BGR")
     {
+        VectorscopeGenerator vectorscope{};
         QImage rgbScope = vectorscope.calculateVectorscope(scopeSize, inputImage, 1,
             VectorscopeGenerator::PaintMode::PaintMode_Green2,
             VectorscopeGenerator::ColorSpace::ColorSpace_YUV,
             false, 7);
-
-        QImage bgrInputImage = inputImage.convertToFormat(QImage::Format_BGR30);
         QImage bgrScope = vectorscope.calculateVectorscope(scopeSize, bgrInputImage, 1,
             VectorscopeGenerator::PaintMode::PaintMode_Green2,
             VectorscopeGenerator::ColorSpace::ColorSpace_YUV,
@@ -30,4 +32,17 @@ TEST_CASE("Vectorscope")
         // handle different pixel formats
         CHECK(rgbScope == bgrScope);
     }
+
+    SECTION("Waveform handles both RGB and BGR")
+    {
+        WaveformGenerator waveform{};
+        QImage rgbScope = waveform.calculateWaveform(scopeSize, inputImage,
+            WaveformGenerator::PaintMode::PaintMode_Yellow,
+            false, ITURec::Rec_709, 1);
+        QImage bgrScope = waveform.calculateWaveform(scopeSize, bgrInputImage,
+            WaveformGenerator::PaintMode::PaintMode_Yellow,
+            false, ITURec::Rec_709, 1);
+
+        CHECK(rgbScope == bgrScope);
+    }
 }