Added tests for regex operation and a slight bug fix

src/core/operations/ToCaseInsensitiveRegex.mjs

@@ -51,11 +51,17 @@ class ToCaseInsensitiveRegex extends Operation {
             return result;
         }
 
+        try {
+            RegExp(input);
+        } catch (error) {
+            return "Invalid Regular Expression (Please note this version of node does not support look behinds).";
+        }
+
         // Example: [test] -> [[tT][eE][sS][tT]]
         return preProcess(input)
 
             // Example: [A-Z] -> [A-Za-z]
-            .replace(/[A-Z]-[A-Z]/ig, m => `${m[0].toUpperCase()}-${m[2].toUpperCase()}${m[0].toLowerCase()}-${m[2].toLowerCase()}`)
+            .replace(/([A-Z]-[A-Z]|[a-z]-[a-z])/g, m => `${m[0].toUpperCase()}-${m[2].toUpperCase()}${m[0].toLowerCase()}-${m[2].toLowerCase()}`)
 
             // Example: [H-d] -> [A-DH-dh-z]
             .replace(/[A-Z]-[a-z]/g, m => `A-${m[2].toUpperCase()}${m}${m[0].toLowerCase()}-z`)

tests/operations/tests/ToFromInsensitiveRegex.mjs

@@ -53,4 +53,136 @@ TestRegister.addTests([
             },
         ],
     },
+    {
+        name: "To Case Insensitive Regex: [A-Z] -> [A-Za-z]",
+        input: "[A-Z]",
+        expectedOutput: "[A-Za-z]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: [a-z] -> [A-Za-z]",
+        input: "[a-z]",
+        expectedOutput: "[A-Za-z]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: [H-d] -> [A-DH-dh-z]",
+        input: "[H-d]",
+        expectedOutput: "[A-DH-dh-z]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: [!-D] -> [!-Da-d]",
+        input: "[!-D]",
+        expectedOutput: "[!-Da-d]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: [%-^] -> [%-^a-z]",
+        input: "[%-^]",
+        expectedOutput: "[%-^a-z]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: [K-`] -> [K-`k-z]",
+        input: "[K-`]",
+        expectedOutput: "[K-`k-z]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: [[-}] -> [[-}A-Z]",
+        input: "[[-}]",
+        expectedOutput: "[[-}A-Z]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: [b-}] -> [b-}B-Z]",
+        input: "[b-}]",
+        expectedOutput: "[b-}B-Z]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: [<-j] -> [<-z]",
+        input: "[<-j]",
+        expectedOutput: "[<-z]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: [^-j] -> [A-J^-j]",
+        input: "[^-j]",
+        expectedOutput: "[A-J^-j]",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: not simple test",
+        input: "Mozilla[A-Z0-9]+[A-Z]Mozilla[0-9whatA-Z][H-d][!-H][a-~](.)+",
+        expectedOutput: "[mM][oO][zZ][iI][lL][lL][aA][A-Za-z0-9]+[A-Za-z][mM][oO][zZ][iI][lL][lL][aA][0-9[wW][hH][aA][tT]A-Za-z][A-DH-dh-z][!-Ha-h][a-~A-Z](.)+",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
+    {
+        name: "To Case Insensitive Regex: erroneous test",
+        input: "Mozilla[A-Z",
+        expectedOutput: "Invalid Regular Expression (Please note this version of node does not support look behinds).",
+        recipeConfig: [
+            {
+                op: "To Case Insensitive Regex",
+                args: [],
+            },
+        ],
+    },
 ]);