add extension tests

Author: jaredcnance

JsonApiDotNetCoreTests/Extensions/IServiceCollectionExtensionsTests.cs renamed to JsonApiDotNetCoreTests/Extensions/UnitTests/IServiceCollectionExtensionsTests.cs

@@ -3,11 +3,10 @@
 using JsonApiDotNetCore.Extensions;
 using JsonApiDotNetCoreTests.Helpers;
 using Microsoft.EntityFrameworkCore;
+using System;
 
 namespace JsonApiDotNetCoreTests.Extensions.UnitTests
 {
-    // see example explanation on xUnit.net website:
-    // https://xunit.github.io/docs/getting-started-dotnet-core.html
     public class IServiceCollectionExtensionsTests
     {
         [Fact]
@@ -17,12 +16,29 @@ public void AddJsonApi_AddsRouterToServiceCollection()
             var serviceCollection = new ServiceCollection();
 
             // act
-            serviceCollection.AddJsonApi(config => {
-              config.UseContext<DbContext>();
+            serviceCollection.AddJsonApi(config =>
+            {
+                config.UseContext<DbContext>();
             });
 
             // assert
             Assert.True(serviceCollection.ContainsType(typeof(IRouter)));
         }
+
+        [Fact]
+        public void AddJsonApi_ThrowsException_IfContextIsNotDefined()
+        {
+            // arrange
+            var serviceCollection = new ServiceCollection();
+
+            // act
+            var testAction = new Action(() =>
+            {
+                serviceCollection.AddJsonApi(config => { });
+            });
+
+            // assert
+            Assert.Throws<NullReferenceException>(testAction);
+        }
     }
 }

JsonApiDotNetCoreTests/Extensions/UnitTests/PathStringExtensionsTests.cs

@@ -0,0 +1,28 @@
+using Xunit;
+using JsonApiDotNetCore.Extensions;
+using Microsoft.AspNetCore.Http;
+
+namespace JsonApiDotNetCoreTests.Extensions.UnitTests
+{
+    public class PathStringExtensionsTests
+    {
+        [Theory]
+        [InlineData("/todoItems", "todoItems", "/")]
+        [InlineData("/todoItems/1", "todoItems", "/1")]
+        [InlineData("/1/relationships/person", "1", "/relationships/person")]
+        [InlineData("/relationships/person", "relationships", "/person")]
+        public void ExtractFirstSegment_Removes_And_Returns_FirstSegementInPathString(string path, string expectedFirstSegment, string expectedRemainder)
+        {
+            // arrange
+            var pathString = new PathString(path);
+
+            // act
+            PathString remainingPath;
+            var firstSegment = pathString.ExtractFirstSegment(out remainingPath);
+
+            // assert
+            Assert.Equal(expectedFirstSegment, firstSegment);
+            Assert.Equal(expectedRemainder, remainingPath);
+        }
+    }
+}

JsonApiDotNetCoreTests/Extensions/UnitTests/StringExtensionsTests.cs

@@ -0,0 +1,32 @@
+using Xunit;
+using JsonApiDotNetCore.Extensions;
+
+namespace JsonApiDotNetCoreTests.Extensions.UnitTests
+{
+    public class StringExtensionsTests
+    {
+        [Theory]
+        [InlineData("TodoItem", "todoItem")]
+        public void ToCamelCase_ConvertsString_ToCamelCase(string input, string expectedOutput)
+        {
+            // arrange
+            // act
+            var result = input.ToCamelCase();
+
+            // assert
+            Assert.Equal(expectedOutput, result);
+        }
+
+        [Theory]
+        [InlineData("todoItem", "TodoItem")]
+        public void ToProperCase_ConvertsString_ToProperCase(string input, string expectedOutput)
+        {
+            // arrange
+            // act
+            var result = input.ToProperCase();
+
+            // assert
+            Assert.Equal(expectedOutput, result);
+        }
+    }
+}