test(math): Add a test case for primes and asterisks

tests/math-primes-asterisk.sil

@@ -0,0 +1,14 @@
+
+\begin[papersize=a5]{document}
+\use[module=packages.math]
+
+% TeX * = \ast
+\math[mode=display]{a * b \quad a \ast b \quad a^* \quad a^\ast \quad a^\ast_0}
+
+% TeX ' and '' and ''' expand to superscripted \prime
+\math[mode=display]{a' \quad a'' \quad a''' \quad  a'_0 \quad a''_0 \quad a'''_0}
+
+% TeX-like prime commands used in superscript lead to the same result
+\math[mode=display]{a^\prime \quad a^\dprime \quad a^\prime_0 \quad a^\dprime_0}
+
+\end{document}

tests/math-unary-binary-minus.expected

@@ -0,0 +1,3 @@
+Begin page
+End page
+Finish