test: add OPS test

Author: decentraldev1

test/ops.spec.ts

@@ -0,0 +1,47 @@
+import { describe, it } from 'mocha';
+import assert from 'assert';
+import { opcodes as OPS } from 'bitcoinjs-lib';
+
+describe('OPS Enum Tests', () => {
+  it('should map OPS keys to correct numbers and reverse lookup', () => {
+    Object.keys(OPS)
+      .filter(key => isNaN(Number(key))) // Only test enum keys, not reverse-mapped numbers
+      .forEach(key => {
+        const value = OPS[key as keyof typeof OPS];
+
+        // Assert the forward mapping
+        assert.strictEqual(
+          OPS[key],
+          value,
+          `Failed for key: ${key}, value: ${value}`,
+        );
+      });
+  });
+
+  it('should reverse map numbers to correct keys', () => {
+    const valueToKeysMap = new Map<number, string[]>();
+
+    Object.keys(OPS)
+      .filter(key => isNaN(Number(key)))
+      .forEach(key => {
+        const value = OPS[key as keyof typeof OPS];
+        if (!valueToKeysMap.has(value)) {
+          valueToKeysMap.set(value, []);
+        }
+        valueToKeysMap.get(value)!.push(key);
+      });
+
+    Object.values(OPS)
+      .filter(value => typeof value === 'number')
+      .forEach(value => {
+        const keys = valueToKeysMap.get(value) || [];
+        keys.forEach(key => {
+          assert.strictEqual(
+            OPS[key],
+            value,
+            `Failed for value: ${value}, key: ${key}`,
+          );
+        });
+      });
+  });
+});