diff --git a/test/shapes/test_regular_polygon.pdf b/test/shapes/class_regular_polygon.pdf
similarity index 98%
rename from test/shapes/test_regular_polygon.pdf
rename to test/shapes/class_regular_polygon.pdf
index 116683a7e..b0830b832 100644
Binary files a/test/shapes/test_regular_polygon.pdf and b/test/shapes/class_regular_polygon.pdf differ
diff --git a/test/shapes/test_regular_polygon.py b/test/shapes/test_regular_polygon.py
index 87d6a2deb..3eb420f81 100644
--- a/test/shapes/test_regular_polygon.py
+++ b/test/shapes/test_regular_polygon.py
@@ -1,60 +1,70 @@
-from fpdf import FPDF
-
-pdf = FPDF()
-pdf.add_page()
-
-# no fill with line
-pdf.regular_polygon(10, 35, 3, 25)
-pdf.regular_polygon(40, 35, 4, 25)
-pdf.regular_polygon(70, 35, 5, 25)
-pdf.regular_polygon(100, 35, 6, 25)
-pdf.regular_polygon(130, 35, 7, 25)
-pdf.regular_polygon(160, 35, 8, 25)
-
-# fill and color test
-pdf.set_fill_color(134, 200, 15)
-pdf.regular_polygon(10, 75, 3, 25, style="f")
-pdf.regular_polygon(40, 75, 4, 25, style="f")
-pdf.regular_polygon(70, 75, 5, 25, style="f")
-pdf.regular_polygon(100, 75, 6, 25, style="f")
-pdf.regular_polygon(130, 75, 7, 25, style="f")
-pdf.regular_polygon(160, 75, 8, 25, style="f")
-
-# draw color test
-pdf.set_fill_color(0, 0, 0)
-pdf.set_draw_color(204, 0, 204)
-pdf.regular_polygon(10, 115, 3, 25)
-pdf.regular_polygon(40, 115, 4, 25)
-pdf.regular_polygon(70, 115, 5, 25)
-pdf.regular_polygon(100, 115, 6, 25)
-pdf.regular_polygon(130, 115, 7, 25)
-pdf.regular_polygon(160, 115, 8, 25)
-
-# line width test
-pdf.set_line_width(1)
-pdf.regular_polygon(10, 155, 3, 25)
-pdf.regular_polygon(40, 155, 4, 25)
-pdf.regular_polygon(70, 155, 5, 25)
-pdf.regular_polygon(100, 155, 6, 25)
-pdf.regular_polygon(130, 155, 7, 25)
-pdf.regular_polygon(160, 155, 8, 25)
-
-# line color and fill color
-pdf.set_fill_color(3, 190, 252)
-pdf.regular_polygon(10, 195, 3, 25, style="f")
-pdf.regular_polygon(40, 195, 4, 25, style="f")
-pdf.regular_polygon(70, 195, 5, 25, style="f")
-pdf.regular_polygon(100, 195, 6, 25, style="f")
-pdf.regular_polygon(130, 195, 7, 25, style="f")
-pdf.regular_polygon(160, 195, 8, 25, style="f")
-
-# rotation test
-pdf.set_draw_color(0, 0, 255)
-pdf.regular_polygon(10, 235, 3, 25, 30)
-pdf.regular_polygon(40, 235, 4, 25, 45)
-pdf.regular_polygon(70, 235, 5, 25, 200)
-pdf.regular_polygon(100, 235, 6, 25, 0)
-pdf.regular_polygon(130, 235, 7, 25, 13)
-pdf.regular_polygon(160, 235, 8, 25, 22.5)
-
-pdf.output("test_regular_polygon.pdf")
+from pathlib import Path
+
+import fpdf
+from test.conftest import assert_pdf_equal
+
+
+HERE = Path(__file__).resolve().parent
+
+
+def test_regular_polygon(tmp_path):
+
+    pdf = fpdf.FPDF()
+    pdf.add_page()
+
+    # no fill with line
+    pdf.regular_polygon(10, 35, 3, 25)
+    pdf.regular_polygon(40, 35, 4, 25)
+    pdf.regular_polygon(70, 35, 5, 25)
+    pdf.regular_polygon(100, 35, 6, 25)
+    pdf.regular_polygon(130, 35, 7, 25)
+    pdf.regular_polygon(160, 35, 8, 25)
+
+    # fill and color test
+    pdf.set_fill_color(134, 200, 15)
+    pdf.regular_polygon(10, 75, 3, 25, style="f")
+    pdf.regular_polygon(40, 75, 4, 25, style="f")
+    pdf.regular_polygon(70, 75, 5, 25, style="f")
+    pdf.regular_polygon(100, 75, 6, 25, style="f")
+    pdf.regular_polygon(130, 75, 7, 25, style="f")
+    pdf.regular_polygon(160, 75, 8, 25, style="f")
+
+    # draw color test
+    pdf.set_fill_color(0, 0, 0)
+    pdf.set_draw_color(204, 0, 204)
+    pdf.regular_polygon(10, 115, 3, 25)
+    pdf.regular_polygon(40, 115, 4, 25)
+    pdf.regular_polygon(70, 115, 5, 25)
+    pdf.regular_polygon(100, 115, 6, 25)
+    pdf.regular_polygon(130, 115, 7, 25)
+    pdf.regular_polygon(160, 115, 8, 25)
+
+    # line width test
+    pdf.set_line_width(1)
+    pdf.regular_polygon(10, 155, 3, 25)
+    pdf.regular_polygon(40, 155, 4, 25)
+    pdf.regular_polygon(70, 155, 5, 25)
+    pdf.regular_polygon(100, 155, 6, 25)
+    pdf.regular_polygon(130, 155, 7, 25)
+    pdf.regular_polygon(160, 155, 8, 25)
+
+    # line color and fill color
+    pdf.set_fill_color(3, 190, 252)
+    pdf.regular_polygon(10, 195, 3, 25, style="f")
+    pdf.regular_polygon(40, 195, 4, 25, style="f")
+    pdf.regular_polygon(70, 195, 5, 25, style="f")
+    pdf.regular_polygon(100, 195, 6, 25, style="f")
+    pdf.regular_polygon(130, 195, 7, 25, style="f")
+    pdf.regular_polygon(160, 195, 8, 25, style="f")
+
+    # rotation test
+    pdf.set_draw_color(0, 0, 255)
+    pdf.regular_polygon(10, 235, 3, 25, 30)
+    pdf.regular_polygon(40, 235, 4, 25, 45)
+    pdf.regular_polygon(70, 235, 5, 25, 200)
+    pdf.regular_polygon(100, 235, 6, 25, 0)
+    pdf.regular_polygon(130, 235, 7, 25, 13)
+    pdf.regular_polygon(160, 235, 8, 25, 22.5)
+
+    # pdf.output("test_regular_polygon.pdf")
+    assert_pdf_equal(pdf, HERE / "class_regular_polygon.pdf", tmp_path)
diff --git a/test_regular_polygon.pdf b/test_regular_polygon.pdf
deleted file mode 100644
index b1387d836..000000000
Binary files a/test_regular_polygon.pdf and /dev/null differ