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XUnitTestRunner.cs
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XUnitTestRunner.cs
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//
// XUnitTestRunner.cs
//
// Author:
// Sergey Khabibullin <sergey@khabibullin.com>
//
// Copyright (c) 2014 Sergey Khabibullin
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using System.Reflection;
using Xunit;
using Xunit.Abstractions;
using System.Collections.Generic;
using MonoDevelop.Core.Execution;
using System.Linq;
using System.IO;
using System.Threading;
namespace MonoDevelop.XUnit
{
/// <summary>
/// Wrapper around xUnit.net framework internals. Extracts and runs tests.
/// </summary>
public class XUnitTestRunner: RemoteProcessObject
{
public XUnitTestInfo GetTestInfo (string assembly, string[] supportAssemblies)
{
PreloadAssemblies (supportAssemblies);
return BuildTestInfo (assembly);
}
void PreloadAssemblies (params string[] supportAssemblies)
{
foreach (string assembly in supportAssemblies)
Assembly.LoadFrom (assembly);
}
XUnitTestInfo BuildTestInfo (string assembly)
{
var infos = new List<TestCaseInfo> ();
if (assembly != null && File.Exists (assembly)) {
using (var controller = new XunitFrontController (assembly, null, false))
using (var discoveryVisitor = new TestDiscoveryVisitor ()) {
controller.Find (false, discoveryVisitor, new TestFrameworkOptions ());
discoveryVisitor.Finished.WaitOne ();
foreach (var testCase in discoveryVisitor.TestCases) {
infos.Add (new TestCaseInfo {
Id = testCase.UniqueID,
Type = testCase.TestMethod.TestClass.Class.Name,
Method = testCase.TestMethod.Method.Name,
DisplayName = testCase.DisplayName
});
}
}
// sort by type, method
infos.Sort ((info1, info2) => {
int i = info1.Type.CompareTo (info2.Type);
if (i == 0)
i = info1.Method.CompareTo (info2.Method);
return i;
});
}
var testInfo = new XUnitTestInfo ();
BuildTestInfo (testInfo, infos, 0);
return testInfo;
}
void BuildTestInfo (XUnitTestInfo testInfo, IEnumerable<TestCaseInfo> infos, int step)
{
int count = infos.Count ();
if (count == 0)
return;
var firstItem = infos.First ();
// if the test is the last element in the group
// then it's going to be a leaf node in the structure
if (count == 1) {
if (step == firstItem.NameParts.Length) {
testInfo.Id = firstItem.Id;
testInfo.Type = firstItem.Type;
testInfo.Method = firstItem.Method;
testInfo.Name = firstItem.Name;
return;
}
}
// build the tree structure based on the parts of the name, so
// [a.b.c, a.b.d, a.e] would become
// (a)
// |-(b)
// |-(c)
// |-(d)
// |-(e)
var groups = infos.GroupBy (info => info.NameParts [step]);
var children = new List<XUnitTestInfo> ();
foreach (var group in groups) {
var child = new XUnitTestInfo {
Name = group.Key
};
BuildTestInfo (child, group, step + 1);
children.Add (child);
}
testInfo.Tests = children.ToArray ();
}
public void Execute (string assembly, XUnitTestInfo[] testInfos, IXUnitExecutionListener executionListener)
{
var lookup = new HashSet<string> ();
foreach (var testInfo in testInfos)
lookup.Add (testInfo.Id);
// we don't want to run every test in the assembly
// only the tests passed in "testInfos" argument
using (var controller = new XunitFrontController (assembly, null, false))
using (var discoveryVisitor = new TestDiscoveryVisitor (tc => lookup.Contains (tc.UniqueID)))
using (var executionVisitor = new TestExecutionVisitor (executionListener)) {
controller.Find(false, discoveryVisitor, new TestFrameworkOptions ());
discoveryVisitor.Finished.WaitOne ();
controller.RunTests (discoveryVisitor.TestCases, executionVisitor,
new XunitExecutionOptions { DisableParallelization = true, SynchronousMessageReporting = true });
}
}
class TestCaseInfo
{
public string Id;
public string Type;
public string Method;
public string DisplayName;
string name;
public string Name {
get {
if (name == null) {
if (DisplayName.StartsWith (Type + "." + Method))
name = Method;
else
name = DisplayName;
}
return name;
}
}
void parseName ()
{
// TODO: fix for xunit v2 where each theory is a separate test case
string[] typeParts = Type.Split ('.');
nameParts = new string [typeParts.Length + 1];
typeParts.CopyTo (nameParts, 0);
nameParts [typeParts.Length] = Method;
}
string[] nameParts;
public string[] NameParts {
get {
if (nameParts == null)
parseName ();
return nameParts;
}
}
}
}
public interface IXUnitExecutionListener
{
bool IsCancelRequested { get; }
void OnTestCaseStarting (string id);
void OnTestCaseFinished (string id);
void OnTestFailed (string id,
decimal executionTime, string output, string[] exceptionTypes, string[] messages, string[] stackTraces);
void OnTestPassed (string id,
decimal executionTime, string output);
void OnTestSkipped (string id,
string reason);
}
public class TestDiscoveryVisitor: TestMessageVisitor<IDiscoveryCompleteMessage>
{
public List<ITestCase> TestCases { get; private set; }
Func<ITestCase, bool> filter;
public TestDiscoveryVisitor ()
{
TestCases = new List<ITestCase> ();
}
public TestDiscoveryVisitor (Func<ITestCase, bool> filter): this ()
{
this.filter = filter;
}
protected override bool Visit (ITestCaseDiscoveryMessage discovery)
{
if (filter == null || filter (discovery.TestCase))
TestCases.Add (discovery.TestCase);
return true;
}
}
public class TestExecutionVisitor: TestMessageVisitor<ITestAssemblyFinished>
{
IXUnitExecutionListener executionListener;
public TestExecutionVisitor (IXUnitExecutionListener executionListener)
{
this.executionListener = executionListener;
}
protected override bool Visit (ITestCaseStarting testCaseStarting)
{
executionListener.OnTestCaseStarting (testCaseStarting.TestCase.UniqueID);
return !executionListener.IsCancelRequested;
}
protected override bool Visit (ITestCaseFinished testCaseFinished)
{
executionListener.OnTestCaseFinished (testCaseFinished.TestCase.UniqueID);
return !executionListener.IsCancelRequested;
}
protected override bool Visit (ITestFailed testFailed)
{
executionListener.OnTestFailed (testFailed.TestCase.UniqueID,
testFailed.ExecutionTime, testFailed.Output, testFailed.ExceptionTypes, testFailed.Messages, testFailed.StackTraces);
return !executionListener.IsCancelRequested;
}
protected override bool Visit (ITestPassed testPassed)
{
executionListener.OnTestPassed (testPassed.TestCase.UniqueID, testPassed.ExecutionTime, testPassed.Output);
return !executionListener.IsCancelRequested;
}
protected override bool Visit (ITestSkipped testSkipped)
{
executionListener.OnTestSkipped (testSkipped.TestCase.UniqueID, testSkipped.Reason);
return !executionListener.IsCancelRequested;
}
}
}