Add comprehensive unit tests for ApiKeyValidator

backend/TestHub.Api.Tests/ApiKeyValidatorTest.cs

@@ -1,19 +1,120 @@
-using NUnit.Framework;
-using System;
-using System.Collections.Generic;
-using System.Text;
+using NUnit.Framework;
 using TestHub.Api.Authentication;
+using FluentAssertions;
 
 namespace TestHub.Api.Tests
 {
     [TestFixture]
     public class ApiKeyValidatorTest
     {
         [Test]
-        public void IsKeyValidTest()
+        public void GenerateApiKey_ShouldReturnNonEmptyString()
         {
-            Assert.IsTrue(ApiKeyValidator.IsKeyValid("2b8e743efdefa277d6563e06f92c1574d8da3f82", "some_org"));
+            var apiKey = ApiKeyValidator.GenerateApiKey("TestOrg");
 
+            apiKey.Should().NotBeNullOrEmpty();
+        }
+
+        [Test]
+        public void GenerateApiKey_ShouldReturnConsistentKeyForSameOrg()
+        {
+            var apiKey1 = ApiKeyValidator.GenerateApiKey("TestOrg");
+            var apiKey2 = ApiKeyValidator.GenerateApiKey("TestOrg");
+
+            apiKey1.Should().Be(apiKey2);
+        }
+
+        [Test]
+        public void GenerateApiKey_ShouldReturnDifferentKeysForDifferentOrgs()
+        {
+            var apiKey1 = ApiKeyValidator.GenerateApiKey("OrgA");
+            var apiKey2 = ApiKeyValidator.GenerateApiKey("OrgB");
+
+            apiKey1.Should().NotBe(apiKey2);
+        }
+
+        [Test]
+        public void GenerateApiKey_ShouldBeCaseInsensitive()
+        {
+            var apiKey1 = ApiKeyValidator.GenerateApiKey("TestOrg");
+            var apiKey2 = ApiKeyValidator.GenerateApiKey("TESTORG");
+            var apiKey3 = ApiKeyValidator.GenerateApiKey("testorg");
+
+            apiKey1.Should().Be(apiKey2);
+            apiKey1.Should().Be(apiKey3);
+        }
+
+        [Test]
+        public void GenerateApiKey_ShouldReturnHexString()
+        {
+            var apiKey = ApiKeyValidator.GenerateApiKey("TestOrg");
+
+            apiKey.Should().MatchRegex("^[a-f0-9]+$");
+        }
+
+        [Test]
+        public void GenerateApiKey_ShouldReturnExpectedLength()
+        {
+            var apiKey = ApiKeyValidator.GenerateApiKey("TestOrg");
+
+            // SHA1 produces 20 bytes, which is 40 hex characters
+            apiKey.Should().HaveLength(40);
+        }
+
+        [Test]
+        public void IsKeyValid_ShouldReturnTrueForValidKey()
+        {
+            var org = "TestOrg";
+            var apiKey = ApiKeyValidator.GenerateApiKey(org);
+
+            var result = ApiKeyValidator.IsKeyValid(apiKey, org);
+
+            result.Should().BeTrue();
+        }
+
+        [Test]
+        public void IsKeyValid_ShouldReturnFalseForInvalidKey()
+        {
+            var org = "TestOrg";
+            var invalidKey = "invalidkey123";
+
+            var result = ApiKeyValidator.IsKeyValid(invalidKey, org);
+
+            result.Should().BeFalse();
+        }
+
+        [Test]
+        public void IsKeyValid_ShouldReturnFalseForMismatchedOrg()
+        {
+            var org1 = "OrgA";
+            var org2 = "OrgB";
+            var apiKey = ApiKeyValidator.GenerateApiKey(org1);
+
+            var result = ApiKeyValidator.IsKeyValid(apiKey, org2);
+
+            result.Should().BeFalse();
+        }
+
+        [Test]
+        public void IsKeyValid_ShouldBeCaseInsensitiveForOrg()
+        {
+            var apiKey = ApiKeyValidator.GenerateApiKey("TestOrg");
+
+            var result1 = ApiKeyValidator.IsKeyValid(apiKey, "TestOrg");
+            var result2 = ApiKeyValidator.IsKeyValid(apiKey, "TESTORG");
+            var result3 = ApiKeyValidator.IsKeyValid(apiKey, "testorg");
+
+            result1.Should().BeTrue();
+            result2.Should().BeTrue();
+            result3.Should().BeTrue();
+        }
+
+        [Test]
+        public void IsKeyValid_ShouldReturnFalseForEmptyKey()
+        {
+            var result = ApiKeyValidator.IsKeyValid("", "TestOrg");
+
+            result.Should().BeFalse();
         }
     }
 }