/// <summary>
/// Gets the unit test provider for an assembly. The framework only
/// currently supports a single provider per test assembly, so if more
/// than one registered provider can handle the assembly, at runtime an
/// InvalidOperationException is thrown.
/// </summary>
/// <param name="harness">The test harness making the request.</param>
/// <param name="testAssembly">Assembly reflection object.</param>
/// <returns>The unit test provider for the test assembly. Throws if
/// more than one can process the assembly. Returns null if there is
/// not a provider for the assembly.</returns>
public static IUnitTestProvider GetAssemblyProvider(UnitTestHarness harness, Assembly testAssembly)
{
List <IAssembly> assemblies = new List <IAssembly>();
foreach (IUnitTestProvider provider in _providers)
{
IAssembly ia = provider.GetUnitTestAssembly(harness, testAssembly);
ICollection <ITestClass> tests = ia.GetTestClasses();
if (tests.Count > 0)
{
assemblies.Add(ia);
}
}
if (assemblies.Count > 1)
{
// TODO: Resource string needed for multiple providers in one
// assembly
throw new InvalidOperationException();
}
foreach (IAssembly a in assemblies)
{
return(a.Provider);
}
// Count == 0
return(null);
}
/// <summary>
/// Gets the unit test provider for an assembly. The framework only
/// currently supports a single provider per test assembly, so if more
/// than one registered provider can handle the assembly, at runtime an
/// InvalidOperationException is thrown.
/// </summary>
/// <param name="harness">The test harness making the request.</param>
/// <param name="testAssembly">Assembly reflection object.</param>
/// <returns>The unit test provider for the test assembly. Throws if
/// more than one can process the assembly. Returns null if there is
/// not a provider for the assembly.</returns>
public static IUnitTestProvider GetAssemblyProvider(UnitTestHarness harness, Assembly testAssembly)
{
List<IAssembly> assemblies = new List<IAssembly>();
foreach (IUnitTestProvider provider in _providers)
{
IAssembly ia = provider.GetUnitTestAssembly(harness, testAssembly);
ICollection<ITestClass> tests = ia.GetTestClasses();
if (tests.Count > 0)
{
assemblies.Add(ia);
}
}
if (assemblies.Count > 1)
{
// TODO: Resource string needed for multiple providers in one
// assembly
throw new InvalidOperationException();
}
foreach (IAssembly a in assemblies)
{
return a.Provider;
}
// Count == 0
return null;
}
/// <summary>
/// VSTT unit test provider constructor; takes an assembly reference to
/// perform reflection on to retrieve all test class types. In this
/// implementation of an engine for the VSTT metadata, only a single
/// test Assembly can be utilized at a time for simplicity.
/// </summary>
/// <param name="testHarness">The unit test harness.</param>
/// <param name="assemblyReference">Assembly reflection object.</param>
/// <returns>Returns the assembly metadata interface.</returns>
public IAssembly GetUnitTestAssembly(UnitTestHarness testHarness, Assembly assemblyReference)
{
if (_assemblyCache.ContainsKey(assemblyReference))
{
return _assemblyCache[assemblyReference];
}
else
{
_assemblyCache[assemblyReference] = new UnitTestFrameworkAssembly(this, testHarness, assemblyReference);
return _assemblyCache[assemblyReference];
}
}
/// <summary>
/// VSTT unit test provider constructor; takes an assembly reference to
/// perform reflection on to retrieve all test class types. In this
/// implementation of an engine for the VSTT metadata, only a single
/// test Assembly can be utilized at a time for simplicity.
/// </summary>
/// <param name="testHarness">The unit test harness.</param>
/// <param name="assemblyReference">Assembly reflection object.</param>
/// <returns>Returns the assembly metadata interface.</returns>
public IAssembly GetUnitTestAssembly(UnitTestHarness testHarness, Assembly assemblyReference)
{
if (_assemblyCache.ContainsKey(assemblyReference))
{
return(_assemblyCache[assemblyReference]);
}
else
{
_assemblyCache[assemblyReference] = new UnitTestFrameworkAssembly(this, testHarness, assemblyReference);
return(_assemblyCache[assemblyReference]);
}
}
/// <summary>
/// Returns the IAssembly provider for an assembly.
/// </summary>
/// <param name="harness">Test harness object.</param>
/// <param name="testAssembly">Assembly reflection object.</param>
/// <returns>Returns null or an IAssembly instance.</returns>
public static IAssembly GetAssemblyWrapper(UnitTestHarness harness, Assembly testAssembly)
{
IUnitTestProvider provider = GetAssemblyProvider(harness, testAssembly);
return(provider == null ? null : provider.GetUnitTestAssembly(harness, testAssembly));
}
/// <summary>
/// Returns the IAssembly provider for an assembly.
/// </summary>
/// <param name="harness">Test harness object.</param>
/// <param name="testAssembly">Assembly reflection object.</param>
/// <returns>Returns null or an IAssembly instance.</returns>
public static IAssembly GetAssemblyWrapper(UnitTestHarness harness, Assembly testAssembly)
{
IUnitTestProvider provider = GetAssemblyProvider(harness, testAssembly);
return provider == null ? null : provider.GetUnitTestAssembly(harness, testAssembly);
}
