chore: Add missing tests

tests/Testcontainers.Db2.Tests/DeclineLicenseAgreementTest.cs

@@ -0,0 +1,21 @@
+namespace Testcontainers.Db2;
+
+public sealed partial class DeclineLicenseAgreementTest
+{
+    [GeneratedRegex("The image '.+' requires you to accept a license agreement\\.")]
+    private static partial Regex LicenseAgreementNotAccepted();
+
+    [Fact]
+    public void WithoutAcceptingLicenseAgreementThrowsArgumentException()
+    {
+        var exception = Assert.Throws<ArgumentException>(() => new Db2Builder().Build());
+        Assert.Matches(LicenseAgreementNotAccepted(), exception.Message);
+    }
+
+    [Fact]
+    public void WithLicenseAgreementDeclinedThrowsArgumentException()
+    {
+        var exception = Assert.Throws<ArgumentException>(() => new Db2Builder().WithAcceptLicenseAgreement(false).Build());
+        Assert.Matches(LicenseAgreementNotAccepted(), exception.Message);
+    }
+}

tests/Testcontainers.Db2.Tests/Usings.cs

@@ -1,4 +1,6 @@
+global using System;
 global using System.Data;
+global using System.Text.RegularExpressions;
 global using System.Data.Common;
 global using System.Threading.Tasks;
 global using DotNet.Testcontainers.Commons;