Figure.inset: Fix a typo and improve existing tests (#4304)

Author: seisman

pygmt/src/inset.py

@@ -24,7 +24,7 @@
 @deprecate_parameter("margin", "clearance", "v0.18.0", remove_version="v0.20.0")
 @contextlib.contextmanager
 @use_alias(D="position", C="clearance")
-@kwargs_to_strings(D="sequence", M="sequence")
+@kwargs_to_strings(D="sequence", C="sequence")
 def inset(
     self,
     projection: str | None = None,
@@ -127,7 +127,7 @@ def inset(
     ...     # Map elements under the "with" statement are plotted in the inset
     ...     fig.coast(
     ...         region="g",
-    ...         projection="G47/-20/3.5c",
+    ...         projection="G47/-20/?",
     ...         land="gray",
     ...         water="white",
     ...         dcw="MG+gred",

pygmt/tests/baseline/test_inset_aliases.png.dvc

@@ -1,5 +1,5 @@
 outs:
-- md5: 813f2c05cf552a9a015c4cc44c9e4246
-  size: 30075
+- md5: 22a63e75b37ec7ead76b11e3a84e9079
+  size: 29982
   path: test_inset_aliases.png
   hash: md5

pygmt/tests/baseline/test_inset_context_manager.png.dvc

@@ -1,5 +1,5 @@
 outs:
-- md5: fad7ee8d74cd61f73a8f218be6b0f9c0
-  size: 10547
+- md5: fcd18ea3b048ac4e8813352163091a85
+  size: 21349
   path: test_inset_context_manager.png
   hash: md5

pygmt/tests/test_inset.py

@@ -15,8 +15,8 @@ def test_inset_aliases():
     """
     fig = Figure()
     fig.basemap(region="MG+r2", frame="afg")
-    with fig.inset(position="jTL+w3.5c+o0.2c", clearance=0, box=Box(pen="green")):
-        fig.basemap(region="g", projection="G47/-20/4c", frame="afg")
+    with fig.inset(position="jTL+w3.5c+o0.2c", clearance=0.2, box=Box(pen="green")):
+        fig.basemap(region="g", projection="G47/-20/?", frame="afg")
     return fig
 
 
@@ -28,7 +28,7 @@ def test_inset_context_manager():
     """
     fig = Figure()
     fig.basemap(region=[-74, -69.5, 41, 43], projection="M9c", frame=True)
-    with fig.inset(position="jBL+w3c+o0.2c", clearance=0, box=Box(pen="black")):
-        fig.basemap(region=[-80, -65, 35, 50], projection="M3c", frame="afg")
+    with fig.inset(position="jBL+w3c+o0.2c", clearance=0.2, box=True):
+        fig.basemap(region="g", projection="G47/-20/?", frame="afg")
     fig.basemap(rose="jTR+w3c")  # Pass rose argument with basemap after the inset
     return fig