Add unit tests for createPseudoRandomValue function in hash module

test/backend-test/test-ntlm-hash.js

@@ -0,0 +1,47 @@
+const test = require("node:test");
+const assert = require("node:assert");
+
+const hash = require("../../server/modules/axios-ntlm/lib/hash");
+
+test("Test createPseudoRandomValue", async (t) => {
+    await t.test("Should create string of specified length", () => {
+        const length = 16;
+        const result = hash.createPseudoRandomValue(length);
+        assert.strictEqual(result.length, length, "Result should have the specified length");
+        assert.strictEqual(typeof result, "string", "Result should be a string");
+    });
+
+    await t.test("Should create string of different lengths", () => {
+        const lengths = [ 8, 16, 32, 64 ];
+        for (const length of lengths) {
+            const result = hash.createPseudoRandomValue(length);
+            assert.strictEqual(result.length, length, `Result should have length ${length}`);
+        }
+    });
+
+    await t.test("Should return valid hexadecimal string", () => {
+        const length = 32;
+        const result = hash.createPseudoRandomValue(length);
+        const hexRegex = /^[0-9a-f]+$/;
+        assert.ok(hexRegex.test(result), "Result should be a valid hexadecimal string");
+    });
+
+    await t.test("Should create different values on multiple calls", () => {
+        const length = 16;
+        const results = new Set();
+        const iterations = 10;
+
+        for (let i = 0; i < iterations; i++) {
+            results.add(hash.createPseudoRandomValue(length));
+        }
+
+        // Due to randomness, at least some values should be different
+        assert.ok(results.size > 1, "Multiple calls should produce different values");
+    });
+
+    await t.test("Should handle length of 0", () => {
+        const result = hash.createPseudoRandomValue(0);
+        assert.strictEqual(result.length, 0, "Result should be empty string for length 0");
+        assert.strictEqual(result, "", "Result should be empty string");
+    });
+});