From 127652002b96a525c71ef8e3336bcc73ecf87c06 Mon Sep 17 00:00:00 2001
From: Denis Nutiu <denis.nutiu@gmail.com>
Date: Sun, 18 Jul 2021 13:05:32 +0300
Subject: [PATCH] Add unit tests for FeedbacksService.GetFeedbacksAsync

---
 .../Services/FeedbacksService.cs              |   1 -
 .../Services/TestFeedbacksService.cs          | 105 ++++++++++++++++++
 2 files changed, 105 insertions(+), 1 deletion(-)

diff --git a/Retroactiune.Core/Services/FeedbacksService.cs b/Retroactiune.Core/Services/FeedbacksService.cs
index 4c6630f..db4a65d 100644
--- a/Retroactiune.Core/Services/FeedbacksService.cs
+++ b/Retroactiune.Core/Services/FeedbacksService.cs
@@ -28,7 +28,6 @@ namespace Retroactiune.Core.Services
 
         public async Task<IEnumerable<Feedback>> GetFeedbacksAsync(FeedbacksListFilters filters)
         {
-            // TODO: Unit test.
             Guard.Against.Null(filters, nameof(filters));
             Guard.Against.Null(filters.FeedbackReceiverId, nameof(filters.FeedbackReceiverId));
             
diff --git a/Retroactiune.UnitTests/Retroactiune.Core/Services/TestFeedbacksService.cs b/Retroactiune.UnitTests/Retroactiune.Core/Services/TestFeedbacksService.cs
index ba69681..bb2d2e3 100644
--- a/Retroactiune.UnitTests/Retroactiune.Core/Services/TestFeedbacksService.cs
+++ b/Retroactiune.UnitTests/Retroactiune.Core/Services/TestFeedbacksService.cs
@@ -81,5 +81,110 @@ namespace Retroactiune.Tests.Retroactiune.Core.Services
                     It.IsAny<InsertOneOptions>(),
                     It.IsAny<CancellationToken>()));
         }
+
+        [Fact]
+        public async Task Test_GetFeedbacksAsync_NullGuards()
+        {
+            // Setup
+            var mongoDatabaseMock = new Mock<IMongoDatabase>();
+            var mongoClientMock = new Mock<IMongoClient>();
+            var mongoSettingsMock = new Mock<IDatabaseSettings>();
+            var mongoCollectionMock = new Mock<IMongoCollection<Feedback>>();
+
+            mongoSettingsMock.SetupGet(i => i.DatabaseName).Returns("MyDB");
+            mongoSettingsMock.SetupGet(i => i.FeedbacksCollectionName).Returns("feedbacks");
+
+            mongoClientMock
+                .Setup(stub => stub.GetDatabase(It.IsAny<string>(),
+                    It.IsAny<MongoDatabaseSettings>()))
+                .Returns(mongoDatabaseMock.Object);
+
+            mongoDatabaseMock
+                .Setup(i => i.GetCollection<Feedback>(It.IsAny<string>(),
+                    It.IsAny<MongoCollectionSettings>()))
+                .Returns(mongoCollectionMock.Object);
+
+            // Test & Assert
+            var service = new FeedbacksService(mongoClientMock.Object, mongoSettingsMock.Object);
+            await Assert.ThrowsAsync<ArgumentNullException>(async () => { await service.GetFeedbacksAsync(null); });
+            await Assert.ThrowsAsync<ArgumentNullException>(async () =>
+            {
+                await service.GetFeedbacksAsync(new FeedbacksListFilters());
+            });
+        }
+
+
+        [Theory, AutoData]
+        public async Task Test_GetFeedbacksAsync_Happy(FeedbacksListFilters feedbacksListFilters)
+        {
+            // Setup
+            var mongoDatabaseMock = new Mock<IMongoDatabase>();
+            var mongoClientMock = new Mock<IMongoClient>();
+            var mongoSettingsMock = new Mock<IDatabaseSettings>();
+            var mongoCollectionMock = new Mock<IMongoCollection<Feedback>>();
+
+            mongoSettingsMock.SetupGet(i => i.DatabaseName).Returns("MyDB");
+            mongoSettingsMock.SetupGet(i => i.FeedbacksCollectionName).Returns("feedbacks");
+
+            mongoClientMock
+                .Setup(stub => stub.GetDatabase(It.IsAny<string>(),
+                    It.IsAny<MongoDatabaseSettings>()))
+                .Returns(mongoDatabaseMock.Object);
+
+            mongoDatabaseMock
+                .Setup(i => i.GetCollection<Feedback>(It.IsAny<string>(),
+                    It.IsAny<MongoCollectionSettings>()))
+                .Returns(mongoCollectionMock.Object);
+
+            mongoCollectionMock.Setup(i => i.FindAsync(It.IsAny<FilterDefinition<Feedback>>(),
+                    It.IsAny<FindOptions<Feedback, Feedback>>(), It.IsAny<CancellationToken>()))
+                .ReturnsAsync(new Mock<IAsyncCursor<Feedback>>().Object);
+
+            // Test
+            var service = new FeedbacksService(mongoClientMock.Object, mongoSettingsMock.Object);
+            await service.GetFeedbacksAsync(feedbacksListFilters);
+
+            // Assert
+            mongoCollectionMock.Verify(i => i.FindAsync(It.IsAny<FilterDefinition<Feedback>>(),
+                It.IsAny<FindOptions<Feedback, Feedback>>(), It.IsAny<CancellationToken>()));
+        }
+        
+        [Theory, AutoData]
+        public async Task Test_GetFeedbacksAsync_Happy_MinimalFilters(string feedbackReceiverId)
+        {
+            // Setup
+            var mongoDatabaseMock = new Mock<IMongoDatabase>();
+            var mongoClientMock = new Mock<IMongoClient>();
+            var mongoSettingsMock = new Mock<IDatabaseSettings>();
+            var mongoCollectionMock = new Mock<IMongoCollection<Feedback>>();
+
+            mongoSettingsMock.SetupGet(i => i.DatabaseName).Returns("MyDB");
+            mongoSettingsMock.SetupGet(i => i.FeedbacksCollectionName).Returns("feedbacks");
+
+            mongoClientMock
+                .Setup(stub => stub.GetDatabase(It.IsAny<string>(),
+                    It.IsAny<MongoDatabaseSettings>()))
+                .Returns(mongoDatabaseMock.Object);
+
+            mongoDatabaseMock
+                .Setup(i => i.GetCollection<Feedback>(It.IsAny<string>(),
+                    It.IsAny<MongoCollectionSettings>()))
+                .Returns(mongoCollectionMock.Object);
+
+            mongoCollectionMock.Setup(i => i.FindAsync(It.IsAny<FilterDefinition<Feedback>>(),
+                    It.IsAny<FindOptions<Feedback, Feedback>>(), It.IsAny<CancellationToken>()))
+                .ReturnsAsync(new Mock<IAsyncCursor<Feedback>>().Object);
+
+            // Test
+            var service = new FeedbacksService(mongoClientMock.Object, mongoSettingsMock.Object);
+            await service.GetFeedbacksAsync(new FeedbacksListFilters()
+            {
+                FeedbackReceiverId = feedbackReceiverId
+            });
+
+            // Assert
+            mongoCollectionMock.Verify(i => i.FindAsync(It.IsAny<FilterDefinition<Feedback>>(),
+                It.IsAny<FindOptions<Feedback, Feedback>>(), It.IsAny<CancellationToken>()));
+        }
     }
 }
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