update elements and fix some bugs

lib/src/prism/tests/languages/basic/operator_feature.test

Index: lib/src/prism/tests/languages/basic/operator_feature.test
diff --git a/lib/src/prism/tests/languages/basic/operator_feature.test b/lib/src/prism/tests/languages/basic/operator_feature.test
new file mode 100644
index 0000000000000000000000000000000000000000..b2d93f619b7e89c82bca9527071a09038ddfa40a
--- /dev/null
+++ b/lib/src/prism/tests/languages/basic/operator_feature.test
@@ -0,0 +1,21 @@
+< <= <>
+> >=
++ - * /
+^ = &
+AND EQV IMP
+NOT OR XOR
+
+----------------------------------------------------
+
+[
+	["operator", "<"], ["operator", "<="], ["operator", "<>"],
+	["operator", ">"], ["operator", ">="],
+	["operator", "+"], ["operator", "-"], ["operator", "*"], ["operator", "/"],
+	["operator", "^"], ["operator", "="], ["operator", "&"],
+	["operator", "AND"], ["operator", "EQV"], ["operator", "IMP"],
+	["operator", "NOT"], ["operator", "OR"], ["operator", "XOR"]
+]
+
+----------------------------------------------------
+
+Checks for operators.