Add Travis build

.gitignore

@@ -31,6 +31,7 @@ build/
 # MSTest test Results
 [Tt]est[Rr]esult*/
 [Bb]uild[Ll]og.*
+*opencover.xml
 
 *_i.c
 *_p.c

.travis.yml

@@ -0,0 +1,14 @@
+language: csharp
+mono: none
+env:
+  global:
+    - DOTNET_SKIP_FIRST_TIME_EXPERIENCE=1
+    - DOTNET_CLI_TELEMETRY_OPTOUT=1
+    - secure: LyfZri+LDXaez/OqC/JU+HMNQeDebmf+SYPZUOGDtWeYBWsYdpsIuhQj5PgfV5aNwSMeefxjFPk/27Cw8D7M7SDcIavBoZbP5fCBqGr9FQKRWkDizaKqP1Mnmu5bFCCr7+7jgTueFk2NZ60rj6vJsmmDtIrMoGF07RzqPySgfLM=
+dotnet: 2.1.401
+install:
+- dotnet restore
+script:
+- dotnet test -c Release /p:CollectCoverage=true /p:CoverletOutputFormat=opencover /p:Exclude="[JsonLD.Test*]*"
+after_success:
+- bash <(curl -s https://codecov.io/bash)

Directory.Build.targets

@@ -0,0 +1,5 @@
+<Project>
+  <Target Name="VSTestIfTestProject">
+    <CallTarget Targets="VSTest" Condition="'$(IsTestProject)' == 'true'" />
+  </Target>
+</Project>

after.JsonLD.sln.targets

@@ -0,0 +1,5 @@
+<Project>
+  <Target Name="VSTest">
+    <MSBuild Projects="@(ProjectReference)" Targets="VSTestIfTestProject" />
+  </Target>
+</Project>

src/json-ld.net/Core/DocumentLoader.cs

@@ -16,11 +16,13 @@ public virtual RemoteDocument LoadDocument(string url)
         {
 #if !PORTABLE && !IS_CORECLR
             RemoteDocument doc = new RemoteDocument(url, null);
+            HttpWebResponse resp;
+
             try
             {
                 HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
                 req.Accept = AcceptHeader;
-                WebResponse resp = req.GetResponse();
+                resp = (HttpWebResponse)req.GetResponse();
                 bool isJsonld = resp.Headers[HttpResponseHeader.ContentType] == "application/ld+json";
                 if (!resp.Headers[HttpResponseHeader.ContentType].Contains("json"))
                 {
@@ -31,7 +33,7 @@ public virtual RemoteDocument LoadDocument(string url)
                 if (!isJsonld && linkHeaders != null)
                 {
                     linkHeaders = linkHeaders.SelectMany((h) => h.Split(",".ToCharArray()))
-                                             .Select(h => h.Trim()).ToArray();
+                                                .Select(h => h.Trim()).ToArray();
                     IEnumerable<string> linkedContexts = linkHeaders.Where(v => v.EndsWith("rel=\"http://www.w3.org/ns/json-ld#context\""));
                     if (linkedContexts.Count() > 1)
                     {
@@ -54,9 +56,32 @@ public virtual RemoteDocument LoadDocument(string url)
             {
                 throw;
             }
-            catch (Exception)
+            catch (WebException webException)
+            {
+                try
+                {
+                    resp = (HttpWebResponse)webException.Response;
+                    int baseStatusCode = (int)(Math.Floor((double)resp.StatusCode / 100)) * 100;
+                    if (baseStatusCode == 300)
+                    {
+                        string location = resp.Headers[HttpResponseHeader.Location];
+                        if (!string.IsNullOrWhiteSpace(location))
+                        {
+                            // TODO: Add recursion break or simply switch to HttpClient so we don't have to recurse on HTTP redirects.
+                            return LoadDocument(location);
+                        }
+                    }
+                }
+                catch (Exception innerException)
+                {
+                    throw new JsonLdError(JsonLdError.Error.LoadingDocumentFailed, url, innerException);
+                }
+
+                throw new JsonLdError(JsonLdError.Error.LoadingDocumentFailed, url, webException);
+            }
+            catch (Exception exception)
             {
-                throw new JsonLdError(JsonLdError.Error.LoadingDocumentFailed, url);
+                throw new JsonLdError(JsonLdError.Error.LoadingDocumentFailed, url, exception);
             }
             return doc;
 #else

src/json-ld.net/Core/JsonLdError.cs

@@ -11,14 +11,22 @@ public class JsonLdError : Exception
         private JsonLdError.Error type;
         internal JObject details = null;
 
-        public JsonLdError(JsonLdError.Error type, object detail) : base(detail == null ? 
-            string.Empty : detail.ToString())
+        public JsonLdError(JsonLdError.Error type, object detail, Exception innerException)
+            : base(detail == null ? string.Empty : detail.ToString(), innerException)
         {
             // TODO: pretty toString (e.g. print whole json objects)
             this.type = type;
         }
 
-        public JsonLdError(JsonLdError.Error type) : base(string.Empty)
+        public JsonLdError(JsonLdError.Error type, object detail)
+            : base(detail == null ? string.Empty : detail.ToString())
+        {
+            // TODO: pretty toString (e.g. print whole json objects)
+            this.type = type;
+        }
+
+        public JsonLdError(JsonLdError.Error type)
+            : base(string.Empty)
         {
             this.type = type;
         }

src/json-ld.net/json-ld.net.csproj

@@ -5,7 +5,7 @@
 Implements the W3C JSON-LD 1.0 standard.</Description>
     <VersionPrefix>1.0.6</VersionPrefix>
     <Authors>NuGet;linked-data-dotnet</Authors>
-    <TargetFrameworks>netstandard1.3;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard1.3;netstandard2.0;netcoreapp2.1</TargetFrameworks>
     <AssemblyName>json-ld.net</AssemblyName>
     <PackageId>json-ld.net</PackageId>
     <PackageTags>json-ld;jsonld;json;linked-data;rdf;semantic;web</PackageTags>

test/json-ld.net.tests/json-ld.net.tests.csproj

@@ -6,6 +6,7 @@
     <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute>
     <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
     <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute>
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies>
   </PropertyGroup>
 
   <ItemGroup>
@@ -19,6 +20,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="coverlet.msbuild" Version="2.3.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
     <PackageReference Include="xunit" Version="2.3.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />