Still working on getting client credential flow complete, most of the request works but still working on generating the JWT.

IdentityShroud.Api.Tests/HeaderHelpersTests.cs

@@ -0,0 +1,20 @@
+using IdentityShroud.Api.Helpers;
+
+namespace IdentityShroud.Api.Tests;
+
+public class HeaderHelpersTests
+{
+    [Theory]
+    [InlineData("Basic dXNlcjpzZWNyZXQ=", true, "user", "secret")]
+    [InlineData("baSIC dXNlcjpzZWNyZXQ=", true, "user", "secret")]
+    [InlineData("Basic dXNlcnNlY3JldA==", false, null, null)] // no colon to seperate user and password
+    [InlineData("Bearer dXNlcjpzZWNyZXQ=", false, null, null)]
+    public void TryDecodeBasicAuth(string input, bool expectedResult, string? expectedUser, string? expectedPassword)
+    {
+        var result = HeaderHelpers.TryDecodeBasicAuth(input, out string? user, out string? password);
+        
+        Assert.Equal(expectedResult, result);
+        Assert.Equal(expectedUser, user);
+        Assert.Equal(expectedPassword, password);
+    }
+}