Implement OfflineMode tests (#150)

Author: kblok

lib/PuppeteerSharp.Tests/Page/OfflineModeTests.cs

@@ -0,0 +1,33 @@
+using System.Net;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace PuppeteerSharp.Tests.Page
+{
+    [Collection("PuppeteerLoaderFixture collection")]
+    public class OfflineModeTests : PuppeteerPageBaseTest
+    {
+        [Fact]
+        public async Task ShouldWork()
+        {
+            await Page.SetOfflineModeAsync(true);
+            await Assert.ThrowsAsync<NavigationException>(async () => await Page.GoToAsync(TestConstants.EmptyPage));
+
+            await Page.SetOfflineModeAsync(false);
+            var response = await Page.ReloadAsync();
+            Assert.Equal(HttpStatusCode.OK, response.Status);
+        }
+
+        [Fact]
+        public async Task ShouldEmulateNavigatorOnLine()
+        {
+            Assert.True(await Page.EvaluateExpressionAsync<bool>("window.navigator.onLine"));
+
+            await Page.SetOfflineModeAsync(true);
+            Assert.False(await Page.EvaluateExpressionAsync<bool>("window.navigator.onLine"));
+
+            await Page.SetOfflineModeAsync(false);
+            Assert.True(await Page.EvaluateExpressionAsync<bool>("window.navigator.onLine"));
+        }
+    }
+}

lib/PuppeteerSharp.Tests/PuppeteerLoaderCollection.cs

@@ -1,15 +1,13 @@
-using System;
-using Xunit;
+using Xunit;
 
 namespace PuppeteerSharp.Tests
 {
     [CollectionDefinition("PuppeteerLoaderFixture collection")]
-    public class DatabaseCollection : ICollectionFixture<PuppeteerLoaderFixture>
+    public class PuppeteerLoaderCollection : ICollectionFixture<PuppeteerLoaderFixture>
     {
         // This class has no code, and is never created. Its purpose is simply
         // to be the place to apply [CollectionDefinition] and all the
         // ICollectionFixture<> interfaces.
         //Recipe from https://xunit.github.io/docs/shared-context.html#class-fixture
     }
-
 }

lib/PuppeteerSharp.Tests/PuppeteerSharp.Tests.csproj

@@ -1,27 +1,22 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFrameworks>netcoreapp2.0;net471</TargetFrameworks>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
-
   <ItemGroup>
     <PackageReference Include="Microsoft.CSharp" Version="4.5.0-preview1-26216-02" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.3.0-preview-20170628-02" />
-    <PackageReference Include="xunit" Version="2.2.0" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.2.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.7.0" />
+    <PackageReference Include="xunit" Version="2.3.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
     <PackageReference Include="PdfSharp" Version="1.32.3057" />
     <PackageReference Include="SixLabors.ImageSharp" Version="1.0.0-beta0002" />
   </ItemGroup>
-
   <ItemGroup>
     <Folder Include="Issues\" />
   </ItemGroup>
-
   <PropertyGroup Condition="'$(TargetFramework)'=='net471'">
     <RuntimeIdentifier>win7-x64</RuntimeIdentifier>
   </PropertyGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\PuppeteerSharp.TestServer\PuppeteerSharp.TestServer.csproj" />
     <ProjectReference Include="..\PuppeteerSharp\PuppeteerSharp.csproj" />

lib/PuppeteerSharp/NavigationException.cs

@@ -4,7 +4,7 @@
 namespace PuppeteerSharp
 {
     [Serializable]
-    internal class NavigationException : PuppeteerException
+    public class NavigationException : PuppeteerException
     {
         public NavigationException()
         {

lib/PuppeteerSharp/Page.cs

@@ -175,6 +175,11 @@ public async Task<object> EvalAsync(string selector, string pageFunction, params
         public async Task SetRequestInterceptionAsync(bool value)
             => await _networkManager.SetRequestInterceptionAsync(value);
 
+        /// <summary>
+        /// Set offline mode for the page.
+        /// </summary>
+        /// <returns>Result task</returns>
+        /// <param name="value">When <c>true</c> enables offline mode for the page.</param>
         public async Task SetOfflineModeAsync(bool value) => await _networkManager.SetOfflineModeAsync(value);
 
         public async Task<object> EvalManyAsync(string selector, Func<object> pageFunction, params object[] args)

lib/PuppeteerSharp/PuppeteerSharp.csproj

@@ -1,5 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
-
+<Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <PackOnBuild>true</PackOnBuild>
@@ -23,6 +22,6 @@
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="10.0.3" />
     <PackageReference Include="System.Net.Http" Version="4.3.3" />
-    <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="2.0.1" />
+    <PackageReference Include="Microsoft.AspNetCore.WebUtilities" Version="2.0.2" />
   </ItemGroup>
-</Project>
+</Project>