Rename test_pygmtlogo function to test_pygmtlogo_circle_no_wordmark and improve it

Author: seisman

pygmt/tests/baseline/test_pygmtlogo.png.dvc

@@ -0,0 +1,5 @@
+outs:
+- md5: f71418c9c7566665086b6b250cc564c4
+  size: 18618
+  hash: md5
+  path: test_pygmtlogo_circle_no_wordmark.png

pygmt/tests/baseline/test_pygmtlogo_circle_no_wordmark.png.dvc

@@ -4,16 +4,22 @@
 
 import pytest
 from pygmt import Figure
+from pygmt.params import Axis, Position
 
 
-@pytest.mark.benchmark
 @pytest.mark.mpl_image_compare
-def test_pygmtlogo():
+def test_pygmtlogo_circle_no_wordmark():
     """
     Plot the default PyGMT logo, colored, light and dark themes, without wordmark.
     """
     fig = Figure()
-    fig.pygmtlogo()
-    fig.shift_origin(xshift="+w")
-    fig.pygmtlogo(theme="dark")
+    fig.basemap(region=[-0.5, 5.0, -0.5, 5.0], projection="x1c", frame=Axis(grid=0.5))
+    fig.pygmtlogo(
+        position=Position((1, 3.5), anchor="CM", cstype="mapcoords"),
+        theme="light",
+    )
+    fig.pygmtlogo(
+        position=Position((3.5, 3.5), anchor="CM", cstype="mapcoords"),
+        theme="dark",
+    )
     return fig