small test fixes

Author: nschloe

test/test_annotate_reference.tex

@@ -40,20 +40,20 @@
 };
 \draw[->,draw=red] (axis cs:4.5,1.5) -- (axis cs:4,1);
 \draw (axis cs:4.5,1.5) node[
-  scale=0.5,
+  scale=0.65,
   anchor=base west,
   text=black,
   rotate=0.0
 ]{text};
 \draw[->,draw=black] (axis cs:0,1) ++(-50pt,30pt) -- (axis cs:0,1);
 \draw (axis cs:0,1) ++(-50pt,30pt) node[
-  scale=0.5,
+  scale=0.65,
   anchor=base west,
   text=black,
   rotate=0.0
 ]{arrowstyle};
 \draw (axis cs:50,-30) node[
-  scale=0.5,
+  scale=0.65,
   anchor=base west,
   text=black,
   rotate=0.0

tikzplotlib/_path.py

@@ -366,7 +366,7 @@ def mpl_linestyle2pgfplots_linestyle(data, line_style, line=None):
     # dashdot: (0, (3.0, 5.0, 1.0, 5.0))
     ff = data["float format"]
     if isinstance(line_style, tuple):
-        if line_style[0] is None:
+        if line_style[0] is None or line_style[1] is None:
             return None
 
         if len(line_style[1]) == 2: