add test for cellstotex

Author: mmatera

test/test_cellstotex.py

@@ -0,0 +1,46 @@
+from mathics.core.parser import parse, SingleLineFeeder
+from mathics.core.definitions import Definitions
+from mathics.core.evaluation import Evaluation
+import pytest
+
+
+definitions = Definitions(add_builtin=True)
+evaluation = Evaluation(definitions=definitions, catch_interrupt=False)
+
+
+def _evaluate(str_expression):
+    expr = parse(definitions, SingleLineFeeder(str_expression))
+    return expr.evaluate(evaluation)
+
+
+def test_load_and_run():
+    str_expr1 = 'Import@"https://raw.githubusercontent.com/jkuczm/MathematicaCellsToTeX/master/NoInstall.m"'
+    str_expected1 = "None"
+    message1 = ""
+    result1 = _evaluate(str_expr1)
+    expected1 = _evaluate(str_expected1)
+
+    if message1:
+        assert result1 == expected1, message1
+    else:
+        assert result1 == expected1
+
+
+def test_load_and_run():
+    str_expr1 = 'Import@"https://raw.githubusercontent.com/jkuczm/MathematicaCellsToTeX/master/NoInstall.m"'
+    str_expected1 = "None"
+    message1 = ""
+    result1 = _evaluate(str_expr1)
+    expected1 = _evaluate(str_expected1)
+
+    str_expr2 = 'CellToTeX[Cell[BoxData[MakeBoxes[Subscript[x, 1] == (-b \[PlusMinus] Sqrt[b^2 - 4 a c])/(2 a)]], "Input"]]'
+    str_expected2 = '"\begin{mmaCell}{Input}\n  \mmaSub{x}{1}==\mmaFrac{-b\(\pmb{\pm}\)\mmaSqrt{\mmaSup{b}{2}-4 a c}}{2 a}\n\end{mmaCell}"'
+    message2 = ""
+    result2 = _evaluate(str_expr2)
+    expected2 = _evaluate(str_expected2)
+
+    if message2:
+        assert result2 == expected2, message2
+    else:
+        assert result2 == expected2
+