diff --git a/test/unit_tests/coordinate_transformer_test.py b/test/unit_tests/coordinate_transformer_test.py
index 3154589..d0f68db 100644
--- a/test/unit_tests/coordinate_transformer_test.py
+++ b/test/unit_tests/coordinate_transformer_test.py
@@ -52,7 +52,7 @@ def base_position_metadata():
 
 
 @pytest.fixture
-def position_metadata(corner, coordinate_system):
+def position_metadata_in_given_system(corner, coordinate_system):
     if coordinate_system == "fpdf":
         return get_fpdf_coordinates(corner)
 
@@ -64,8 +64,13 @@ def position_metadata(corner, coordinate_system):
 
 
 @pytest.fixture
-def coordinate_test_pdf(position_metadata, coordinate_test_image, coordinate_test_fpdf):
-    add_image(coordinate_test_fpdf, ImageMetadataPair(coordinate_test_image, position_metadata))
+def position_metadata_in_reference_system(corner):
+    return get_fpdf_coordinates(corner)
+
+
+@pytest.fixture
+def coordinate_test_pdf(position_metadata_in_given_system, coordinate_test_image, coordinate_test_fpdf):
+    add_image(coordinate_test_fpdf, ImageMetadataPair(coordinate_test_image, position_metadata_in_given_system))
     return coordinate_test_fpdf.output(dest="S").encode("latin1")
 
 
@@ -76,18 +81,20 @@ def coordinate_test_page_image(coordinate_test_pdf):
 
 @pytest.mark.parametrize("corner", ["top_left", "bottom_left"])
 @pytest.mark.parametrize("coordinate_system", ["fpdf"])
-def test_fpdf_coordinate_transformer(position_metadata):
-    assert FPDFCoordinateTransformer()(position_metadata) == position_metadata
+def test_fpdf_coordinate_transformer(position_metadata_in_given_system, position_metadata_in_reference_system):
+    assert FPDFCoordinateTransformer()(position_metadata_in_given_system) == position_metadata_in_reference_system
 
 
 @pytest.mark.parametrize("corner", ["top_left", "bottom_left"])
 @pytest.mark.parametrize("coordinate_system", ["fitz"])
-def test_coordinate_transformer(position_metadata, coordinate_test_pdf):
+def test_coordinate_transformer(
+        position_metadata_in_given_system, position_metadata_in_reference_system, coordinate_test_pdf
+):
     # coordinate_test_pdf.output("/tmp/x.pdf")
     # coordinate_test_page_image.show()
 
     metadata_extracted = next(map(second, ParsablePDFImageExtractor()(coordinate_test_pdf)))
-    position_extracted = project(metadata_extracted, list(position_metadata.keys()))
+    position_extracted = project(metadata_extracted, list(position_metadata_in_given_system.keys()))
 
-    assert position_extracted == position_metadata
-    assert FitzCoordinateTransformer()(position_metadata) == position_metadata
+    assert position_extracted == position_metadata_in_given_system
+    assert FitzCoordinateTransformer()(position_metadata_in_given_system) == position_metadata_in_reference_system