update elements and fix some bugs

lib/src/prism/tests/languages/vhdl/number_feature.test

Index: lib/src/prism/tests/languages/vhdl/number_feature.test
diff --git a/lib/src/prism/tests/languages/vhdl/number_feature.test b/lib/src/prism/tests/languages/vhdl/number_feature.test
new file mode 100644
index 0000000000000000000000000000000000000000..0c576ccdb163e822b1181900b34a8492272402b7
--- /dev/null
+++ b/lib/src/prism/tests/languages/vhdl/number_feature.test
@@ -0,0 +1,37 @@
+'0'
+'1'
+'x'
+'z'
+
+42
+42_000
+3.14159
+2.4E8
+3.0e-2
+7.54e+24
+
+2#1010_1010#
+16#BadFace#
+
+----------------------------------------------------
+
+[
+	["number", "'0'"],
+	["number", "'1'"],
+	["number", "'x'"],
+	["number", "'z'"],
+
+	["number", "42"],
+	["number", "42_000"],
+	["number", "3.14159"],
+	["number", "2.4E8"],
+	["number", "3.0e-2"],
+	["number", "7.54e+24"],
+
+	["number", "2#1010_1010#"],
+	["number", "16#BadFace#"]
+]
+
+----------------------------------------------------
+
+Checks for numbers.