Use : not =

GenericMappingTools · Oct 24, 2023 · ad18823 · ad18823
1 parent f911796
commit ad18823
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pygmt/tests/test_grdimage.py b/pygmt/tests/test_grdimage.py
@@ -251,7 +251,7 @@ def test_grdimage_img_out(grid):
     Test that the img_out (-A) parameter works as expected.
     """
     fig = Figure()
-    for suffix in [".png", ".jpg", ".tiff", ".pdf=PDF"]:
+    for suffix in [".png", ".jpg", ".tiff", ".pdf:PDF"]:
         with GMTTempFile(suffix=suffix) as tmpfile:
             fig.grdimage(grid, cmap="earth", projection="W0/6i", img_out=tmpfile.name)
             # Remove the driver string