Test(core): Write doctest on computing with fractions

mapytex/calculus/core/__init__.py

@@ -18,7 +18,7 @@ Abstracts tools for calculs manipulations
  > *
  | > 3
  | > 4
->>> print(t.apply_on_last_level(compute))
+>>> print(t.apply_on_last_level(compute, typing))
 +
  > 2
  > 12
@@ -26,6 +26,26 @@ Abstracts tools for calculs manipulations
 '2 + 3 * 4'
 >>> tree2tex(t)
 '2 + 3 \\times 4'
+
+>>> t = Tree.from_str("2+3/4")
+>>> print(t)
++
+ > 2
+ > /
+ | > 3
+ | > 4
+>>> print(t.apply_on_last_level(compute, typing))
++
+ > /
+ | > *
+ | | > 2
+ | | > 4
+ | > 4
+ > /
+ | > 3
+ | > 4
+
+
 >>> t = Tree.from_str("2+3x")
 >>> print(t)
 +
@@ -38,6 +58,7 @@ Abstracts tools for calculs manipulations
 
 from .tree import Tree
 from .compute import compute
+from .typing import typing
 from .renders import tree2txt, tree2tex