allow qr to set all arguments to image (#600)

* allow qr to set all arguments to image

* increase coverage

test/test_function_qr_non-native.py

@@ -9,6 +9,8 @@
 """
 
 
+import warnings
+
 import mock
 import pytest
 from PIL import Image
@@ -29,10 +31,47 @@ def test_type_of_object_passed_to_image_function(img_function):
     assert isinstance(args[0], Image.Image)
 
 
+@mock.patch("escpos.printer.Dummy.image", spec=Dummy)
+def test_parameter_image_arguments_passed_to_image_function(img_function):
+    """Test the parameter passed to non-native qr printing."""
+    d = Dummy()
+    d.qr(
+        "LoremIpsum",
+        native=False,
+        image_arguments={
+            "impl": "bitImageColumn",
+            "high_density_vertical": False,
+            "center": True,
+        },
+    )
+    args, kwargs = img_function.call_args
+    assert "impl" in kwargs
+    assert kwargs["impl"] == "bitImageColumn"
+    assert "high_density_vertical" in kwargs
+    assert kwargs["high_density_vertical"] is False
+    assert "center" in kwargs
+    assert kwargs["center"]
+
+
 @pytest.fixture
 def instance():
     return Dummy()
 
 
 def test_center(instance):
+    """Test printing qr codes."""
     instance.qr("LoremIpsum", center=True)
+
+
+def test_deprecated_arguments(instance):
+    """Test deprecation warning."""
+    with warnings.catch_warnings(record=True) as w:
+        # cause all warnings to always be triggered
+        warnings.simplefilter("always")
+        instance.qr(
+            "LoremIpsum",
+            impl="bitImageRaster",
+            image_arguments={"impl": "bitImageColumn"},
+        )
+        assert issubclass(w[-1].category, DeprecationWarning)
+        assert "deprecated" in str(w[-1].message)