From ba6d0529f03aaba47ca93eacae9f8274bb282fb9 Mon Sep 17 00:00:00 2001
From: Ben Stone <ben1.stone@education.gov.uk>
Date: Thu, 13 Aug 2020 15:31:32 +0100
Subject: [PATCH] CON-2182 adds unit tests

---
 .../GetClientContent/WhenIGetContent.cs       | 123 ++++++++++++++++++
 .../WhenIGetContentData.cs                    |  38 ++++++
 2 files changed, 161 insertions(+)
 create mode 100644 src/SFA.DAS.EmployerFinance.UnitTests/Queries/GetClientContent/WhenIGetContent.cs
 create mode 100644 src/SFA.DAS.EmployerFinance.UnitTests/Services/ClientContentServiceTests/WhenIGetContentData.cs

diff --git a/src/SFA.DAS.EmployerFinance.UnitTests/Queries/GetClientContent/WhenIGetContent.cs b/src/SFA.DAS.EmployerFinance.UnitTests/Queries/GetClientContent/WhenIGetContent.cs
new file mode 100644
index 0000000000..836cbfa2e1
--- /dev/null
+++ b/src/SFA.DAS.EmployerFinance.UnitTests/Queries/GetClientContent/WhenIGetContent.cs
@@ -0,0 +1,123 @@
+using Moq;
+using NUnit.Framework;
+using SFA.DAS.EmployerFinance.Configuration;
+using SFA.DAS.EmployerFinance.Interfaces;
+using SFA.DAS.EmployerFinance.Queries.GetClientContent;
+using SFA.DAS.NLog.Logger;
+using SFA.DAS.Validation;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SFA.DAS.EmployerFinance.UnitTests.Queries.GetClientContent
+{
+    public class WhenIGetContent : QueryBaseTest<GetClientContentRequestHandler, GetClientContentRequest, GetClientContentResponse>
+    {
+        public override GetClientContentRequest Query { get; set; }
+        public override GetClientContentRequestHandler RequestHandler { get; set; }
+        public override Mock<IValidator<GetClientContentRequest>> RequestValidator { get; set; }
+
+        private string _contentType;
+        private string _clientId;
+
+        private string CacheKey;
+        private string Content;
+        public EmployerFinanceConfiguration EmployerFinanceConfiguration;
+
+        private Mock<ILog> MockLogger;
+        private Mock<IClientContentService> MockClientContentService;
+        private Mock<ICacheStorageService> MockCacheStorageService;
+        private Mock<IValidator<GetClientContentRequest>> MockValidator;
+
+        [SetUp]
+        public void Arrange()
+        {
+            _clientId = "eas-fin";
+            _contentType = "banner";
+
+            EmployerFinanceConfiguration = new EmployerFinanceConfiguration()
+            {
+                ApplicationId = "eas-fin",
+                DefaultCacheExpirationInMinutes = 1
+            };
+            Content = "<p> Example content </p>";
+            CacheKey = EmployerFinanceConfiguration.ApplicationId;
+
+            MockLogger = new Mock<ILog>();
+            MockClientContentService = new Mock<IClientContentService>();
+            MockCacheStorageService = new Mock<ICacheStorageService>();
+            MockValidator = new Mock<IValidator<GetClientContentRequest>>();
+
+            MockClientContentService
+                .Setup(cs => cs.Get(_contentType, _clientId))
+                .ReturnsAsync(Content);
+
+            Query = new GetClientContentRequest
+            {
+                ContentType = "banner"
+            };
+
+            RequestHandler = new GetClientContentRequestHandler(RequestValidator.Object, MockLogger.Object,
+                MockClientContentService.Object, MockCacheStorageService.Object, EmployerFinanceConfiguration);
+        }
+
+        [Test]
+        public override async Task ThenIfTheMessageIsValidTheRepositoryIsCalled()
+        {
+            await RequestHandler.Handle(Query);
+
+            MockClientContentService.Verify(x => x.Get(_contentType, _clientId), Times.Once);
+        }
+
+        [Test]
+        public override async Task ThenIfTheMessageIsValidTheValueIsReturnedInTheResponse()
+        {
+            await RequestHandler.Handle(Query);
+
+            MockClientContentService.Verify(x => x.Get(_contentType, _clientId), Times.Once);
+        }
+
+        [Test]
+        public async Task AND_it_is_stored_in_the_cache_THEN_return_content()
+        {
+            StoredInCacheSetup();
+
+            var result = await RequestHandler.Handle(Query);
+
+            Assert.AreEqual(Content, result.Content);
+            MockCacheStorageService.Verify(c => c.TryGet(CacheKey, out Content), Times.Once);
+        }
+
+        [Test]
+        public async Task AND_it_is_stored_in_the_cache_THEN_content_api_is_not_called()
+        {
+            StoredInCacheSetup();
+
+            var result = await RequestHandler.Handle(Query);
+
+            MockClientContentService.Verify(c => c.Get(_contentType, _clientId), Times.Never);
+        }
+
+        [Test]
+        public async Task AND_it_is_not_stored_in_the_cache_THEN_call_from_client()
+        {
+            MockValidator.Setup(r => r.Validate(Query)).Returns(new ValidationResult());
+            MockCacheStorageService.Setup(c => c.TryGet(CacheKey, out Content)).Returns(false);
+            MockClientContentService.Setup(c => c.Get("banner", CacheKey))
+                .ReturnsAsync(Content);
+
+            var result = await RequestHandler.Handle(Query);
+
+            Assert.AreEqual(Content, result.Content);
+        }
+
+        private void StoredInCacheSetup()
+        {
+            MockValidator.Setup(r => r.Validate(Query)).Returns(new ValidationResult());
+            MockCacheStorageService.Setup(c => c.TryGet(CacheKey, out Content)).Returns(true);
+            MockClientContentService.Setup(c => c.Get("banner", CacheKey));
+        }
+    }
+}
diff --git a/src/SFA.DAS.EmployerFinance.UnitTests/Services/ClientContentServiceTests/WhenIGetContentData.cs b/src/SFA.DAS.EmployerFinance.UnitTests/Services/ClientContentServiceTests/WhenIGetContentData.cs
new file mode 100644
index 0000000000..9c49e2e260
--- /dev/null
+++ b/src/SFA.DAS.EmployerFinance.UnitTests/Services/ClientContentServiceTests/WhenIGetContentData.cs
@@ -0,0 +1,38 @@
+using FluentAssertions;
+using Moq;
+using NUnit.Framework;
+using SFA.DAS.EmployerFinance.Interfaces;
+using SFA.DAS.EmployerFinance.Services;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SFA.DAS.EmployerFinance.UnitTests.Services.ClientContentServiceTests
+{
+    class WhenIGetContentData
+    {
+        private Mock<IClientContentApiClient> MockClientContentApiClient;
+        private IClientContentService ClientContentService;
+        private string TestContent = "<h1My First Heading</h1><p>My First Paragraph</p>";
+
+        [SetUp]
+        public void SetUp()
+        {
+            MockClientContentApiClient = new Mock<IClientContentApiClient>();
+            MockClientContentApiClient
+                .Setup(c => c.Get("banner", "eas-fin"))
+                .ReturnsAsync(TestContent);
+
+            ClientContentService = new ClientContentService(MockClientContentApiClient.Object);
+        }
+
+        public async Task THEN_Content_is_returned_from_api()
+        {
+            var result = await ClientContentService.Get("banner", "eas-fin");
+
+            result.Should().Be(TestContent);
+        }
+    }
+}