Add IsZero() and IsNotZero() assertions for all numeric types

TUnit.Assertions.Tests/IntAssertionTests.cs

@@ -0,0 +1,103 @@
+using TUnit.Assertions.Extensions;
+
+namespace TUnit.Assertions.Tests;
+
+public class IntAssertionTests
+{
+    [Test]
+    public async Task Test_Int_IsZero()
+    {
+        var value = 0;
+        await Assert.That(value).IsZero();
+    }
+
+    [Test]
+    public async Task Test_Int_IsZero_Literal()
+    {
+        await Assert.That(0).IsZero();
+    }
+
+    [Test]
+    public async Task Test_Int_IsZero_Fails_WhenNotZero()
+    {
+        var value = 1;
+        await Assert.ThrowsAsync<AssertionException>(async () => await Assert.That(value).IsZero());
+    }
+
+    [Test]
+    public async Task Test_Int_IsNotZero_Positive()
+    {
+        var value = 1;
+        await Assert.That(value).IsNotZero();
+    }
+
+    [Test]
+    public async Task Test_Int_IsNotZero_Negative()
+    {
+        var value = -1;
+        await Assert.That(value).IsNotZero();
+    }
+
+    [Test]
+    public async Task Test_Int_IsNotZero_Large()
+    {
+        var value = 1000000;
+        await Assert.That(value).IsNotZero();
+    }
+
+    [Test]
+    public async Task Test_Int_IsNotZero_Fails_WhenZero()
+    {
+        var value = 0;
+        await Assert.ThrowsAsync<AssertionException>(async () => await Assert.That(value).IsNotZero());
+    }
+
+    [Test]
+    public async Task Test_Int_IsEven_Zero()
+    {
+        var value = 0;
+        await Assert.That(value).IsEven();
+    }
+
+    [Test]
+    public async Task Test_Int_IsEven_Positive()
+    {
+        var value = 2;
+        await Assert.That(value).IsEven();
+    }
+
+    [Test]
+    public async Task Test_Int_IsEven_Negative()
+    {
+        var value = -4;
+        await Assert.That(value).IsEven();
+    }
+
+    [Test]
+    public async Task Test_Int_IsEven_Fails_WhenOdd()
+    {
+        var value = 3;
+        await Assert.ThrowsAsync<AssertionException>(async () => await Assert.That(value).IsEven());
+    }
+
+    [Test]
+    public async Task Test_Int_IsOdd_Positive()
+    {
+        var value = 3;
+        await Assert.That(value).IsOdd();
+    }
+
+    [Test]
+    public async Task Test_Int_IsOdd_Negative()
+    {
+        var value = -5;
+        await Assert.That(value).IsOdd();
+    }
+
+    [Test]
+    public async Task Test_Int_IsOdd_Fails_WhenEven()
+    {
+        var value = 4;
+        await Assert.ThrowsAsync<AssertionException>(async () => await Assert.That(value).IsOdd());
+    }
+}