Function Test 1

FunctionTest1.cs

public class FunctionTest
{
    [Fact]
    public void Function_Should_Return_Config_Variable()
    {
        // Mock IConfiguration
        var expected = "val1";
        var mockConfig = new Mock<IConfiguration>();
        mockConfig.Setup(p => p[It.IsAny<string>()]).Returns(expected);

        // Mock IConfigurationService
        var mockConfigService = new Mock<IConfigurationService>();
        mockConfigService.Setup(p => p.GetConfiguration()).Returns(mockConfig.Object);

        // Invoke the lambda function and confirm config value is returned
        var function = new Function(mockConfigService.Object);
        var result = function.FunctionHandler("env1", new TestLambdaContext());
        Assert.Equal(expected, result);
    }
}