From 38640d411fa74365b37cbe17e6792defaca42842 Mon Sep 17 00:00:00 2001
From: Ahmed-Ghanam <ahmed.m.ghanam@outlook.com>
Date: Tue, 8 Oct 2024 16:33:23 +0200
Subject: [PATCH] Implement unit tests to verify the functionality of the class
 responsible for validating national identity numbers

---
 .../NationalIdentityNumberCheckerTests.cs     | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 test/Altinn.Profile.Tests/Profile.Integrations/NationalIdentityNumberCheckerTests.cs

diff --git a/test/Altinn.Profile.Tests/Profile.Integrations/NationalIdentityNumberCheckerTests.cs b/test/Altinn.Profile.Tests/Profile.Integrations/NationalIdentityNumberCheckerTests.cs
new file mode 100644
index 0000000..5306f1d
--- /dev/null
+++ b/test/Altinn.Profile.Tests/Profile.Integrations/NationalIdentityNumberCheckerTests.cs
@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+
+using Altinn.Profile.Integrations.Services;
+
+using Xunit;
+
+namespace Altinn.Profile.Tests.Profile.Integrations;
+
+public class NationalIdentityNumberCheckerTests
+{
+    private readonly NationalIdentityNumberChecker _checker;
+
+    public NationalIdentityNumberCheckerTests()
+    {
+        _checker = new NationalIdentityNumberChecker();
+    }
+
+    [Fact]
+    public void Categorize_NullInput_ThrowsArgumentNullException()
+    {
+        Assert.Throws<ArgumentNullException>(() => _checker.Categorize(null));
+    }
+
+    [Fact]
+    public void Categorize_ValidAndInvalidNumbers_ReturnsCorrectCategorization()
+    {
+        var input = new List<string> { "26050711071", "invalid_number", "06010190515" };
+        var (valid, invalid) = _checker.Categorize(input);
+
+        Assert.Single(invalid);
+        Assert.Equal(2, valid.Count);
+        Assert.Contains("26050711071", valid);
+        Assert.Contains("06010190515", valid);
+        Assert.Contains("invalid_number", invalid);
+    }
+
+    [Fact]
+    public void GetValid_NullInput_ThrowsArgumentNullException()
+    {
+        Assert.Throws<ArgumentNullException>(() => _checker.GetValid(null));
+    }
+
+    [Fact]
+    public void GetValid_ValidAndInvalidNumbers_ReturnsOnlyValidNumbers()
+    {
+        var input = new List<string> { "05112908325", "031IN0918959", "03110918959" };
+        var result = _checker.GetValid(input);
+
+        Assert.Equal(2, result.Count);
+        Assert.Contains("05112908325", result);
+        Assert.Contains("03110918959", result);
+    }
+
+    [Fact]
+    public void IsValid_ValidNumber_ReturnsTrue()
+    {
+        var result = _checker.IsValid("08033201398");
+        Assert.True(result);
+    }
+
+    [Fact]
+    public void IsValid_InvalidNumber_ReturnsFalse()
+    {
+        var result = _checker.IsValid("080332Q1398");
+        Assert.False(result);
+    }
+}