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Access MSTest's TestContext property via ScenarioContext #882

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merged 3 commits into from
Jul 28, 2017
Merged

Access MSTest's TestContext property via ScenarioContext #882

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9c4f9ed
Merge remote-tracking branch 'refs/remotes/techtalk/master'
aptester Jun 30, 2017
c78f48c
injected MSTest's TestContext into ScenarioContext
aptester Jul 3, 2017
6424b4e
fixed TestContext property generation for VB.Net
aptester Jul 4, 2017
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39 changes: 37 additions & 2 deletions TechTalk.SpecFlow.Generator/UnitTestProvider/MsTestGeneratorProvider.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,9 @@ public class MsTestGeneratorProvider : IUnitTestGeneratorProvider

protected const string TESTCONTEXT_TYPE = "Microsoft.VisualStudio.TestTools.UnitTesting.TestContext";

protected const string TESTCONTEXT_FIELD_NAME = "_testContext";
protected const string TESTCONTEXT_PROPERTY_NAME = "TestContext";

protected CodeDomHelper CodeDomHelper { get; set; }

public virtual UnitTestGeneratorTraits GetTraits()
Expand All @@ -44,11 +47,32 @@ private void SetProperty(CodeTypeMember codeTypeMember, string name, string valu
public virtual void SetTestClass(TestClassGenerationContext generationContext, string featureTitle, string featureDescription)
{
CodeDomHelper.AddAttribute(generationContext.TestClass, TESTFIXTURE_ATTR);

// Add a TestContext field
generationContext.TestClass.Members.Add(new CodeMemberField(TESTCONTEXT_TYPE, TESTCONTEXT_FIELD_NAME));

// Add a TestContext property
var testContextProperty = new CodeMemberProperty
{
Attributes = MemberAttributes.Public,
Name = TESTCONTEXT_PROPERTY_NAME,
HasGet = true,
HasSet = true,
Type = new CodeTypeReference(TESTCONTEXT_TYPE)
};
testContextProperty.GetStatements.Add(new CodeMethodReturnStatement(
new CodeFieldReferenceExpression(
new CodeThisReferenceExpression(), TESTCONTEXT_FIELD_NAME)));
testContextProperty.SetStatements.Add(new CodeAssignStatement(
new CodeFieldReferenceExpression(
new CodeThisReferenceExpression(), TESTCONTEXT_FIELD_NAME), new CodePropertySetValueReferenceExpression()));

generationContext.TestClass.Members.Add(testContextProperty);
}

public virtual void SetTestClassCategories(TestClassGenerationContext generationContext, IEnumerable<string> featureCategories)
{
//MsTest does not support caregories... :(
//MsTest does not support categories... :(
}

public void SetTestClassIgnore(TestClassGenerationContext generationContext)
Expand All @@ -58,7 +82,18 @@ public void SetTestClassIgnore(TestClassGenerationContext generationContext)

public virtual void FinalizeTestClass(TestClassGenerationContext generationContext)
{
// by default, doing nothing to the final generated code
// testRunner.ScenarioContext.ScenarioContainer.RegisterInstanceAs<TestContext>(TestContext);
generationContext.ScenarioInitializeMethod.Statements.Add(
new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(
new CodePropertyReferenceExpression(
new CodePropertyReferenceExpression(
new CodeFieldReferenceExpression(null, generationContext.TestRunnerField.Name),
"ScenarioContext"),
"ScenarioContainer"),
"RegisterInstanceAs",
new CodeTypeReference(TESTCONTEXT_TYPE)),
new CodeVariableReferenceExpression(TESTCONTEXT_PROPERTY_NAME)));
}

public void SetTestClassParallelize(TestClassGenerationContext generationContext)
Expand Down
20 changes: 20 additions & 0 deletions Tests/TechTalk.SpecFlow.Specs/Features/MsTestProvider.feature
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,26 @@ Scenario: Should handle scenario outlines
| Succeeded |
| 2 |

Scenario: Should be able to access TestContext in Steps
Given there is a SpecFlow project
And the project is configured to use the MsTest provider
And a scenario 'Simple Scenario' as
"""
When I do something
"""
And the following step definition
"""
[When(@"I do something")]
public void WhenIDoSomething()
{
System.Console.WriteLine(ScenarioContext.Current.ScenarioContainer.Resolve<Microsoft.VisualStudio.TestTools.UnitTesting.TestContext>().TestName);
}
"""
When I execute the tests with MsTest
Then the execution summary should contain
| Succeeded |
| 1 |

@config
Scenario: Should be able to specify MsTest provider in the configuration
Given there is a SpecFlow project
Expand Down