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// -----------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
// -----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition.Factories;
using System.UnitTesting;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.ComponentModel.Composition.Primitives;
namespace System.ComponentModel.Composition
{
[TestClass]
public class ExportTests
{
[TestMethod]
public void Constructor1_ShouldNotThrow()
{
new NoOverridesExport();
}
[TestMethod]
public void Constructor2_NullAsExportedValueGetterArgument_ShouldThrowArgumentNull()
{
var definition = ExportDefinitionFactory.Create();
ExceptionAssert.ThrowsArgument<ArgumentNullException>("exportedValueGetter", () =>
{
new Export(definition, (Func<object>)null);
});
}
[TestMethod]
public void Constructor3_NullAsExportedValueGetterArgument_ShouldThrowArgumentNull()
{
ExceptionAssert.ThrowsArgument<ArgumentNullException>("exportedValueGetter", () =>
{
new Export("ContractName", (Func<object>)null);
});
}
[TestMethod]
public void Constructor4_NullAsExportedValueGetterArgument_ShouldThrowArgumentNull()
{
var metadata = new Dictionary<string, object>();
ExceptionAssert.ThrowsArgument<ArgumentNullException>("exportedValueGetter", () =>
{
new Export("ContractName", metadata, (Func<object>)null);
});
}
[TestMethod]
public void Constructor2_NullAsDefinitionArgument_ShouldThrowArgumentNull()
{
ExceptionAssert.ThrowsArgument<ArgumentNullException>("definition", () =>
{
new Export((ExportDefinition)null, () => null);
});
}
[TestMethod]
public void Constructor2_DefinitionAsDefinitionArgument_ShouldSetDefinitionProperty()
{
var definition = ExportDefinitionFactory.Create();
var export = new Export(definition, () => null);
Assert.AreSame(definition, export.Definition);
}
[TestMethod]
public void Constructor3_NullAsContractNameArgument_ShouldThrowArgumentNull()
{
ExceptionAssert.ThrowsArgument<ArgumentNullException>("contractName", () =>
{
new Export((string)null, () => null);
});
}
[TestMethod]
public void Constructor4_NullAsContractNameArgument_ShouldThrowArgumentNull()
{
ExceptionAssert.ThrowsArgument<ArgumentNullException>("contractName", () =>
{
new Export((string)null, new Dictionary<string, object>(), () => null);
});
}
[TestMethod]
public void Constructor3_EmptyStringAsContractNameArgument_ShouldThrowArgument()
{
ExceptionAssert.ThrowsArgument<ArgumentException>("contractName", () =>
{
new Export(string.Empty, () => null);
});
}
[TestMethod]
public void Constructor4_EmptyStringAsContractNameArgument_ShouldThrowArgument()
{
ExceptionAssert.ThrowsArgument<ArgumentException>("contractName", () =>
{
new Export(string.Empty, new Dictionary<string, object>(), () => null);
});
}
[TestMethod]
public void Constructor3_ValueAsContractNameArgument_ShouldSetDefinitionContractNameProperty()
{
var expectations = Expectations.GetContractNames();
foreach (var e in expectations)
{
var export = new Export(e, () => null);
Assert.AreEqual(e, export.Definition.ContractName);
}
}
[TestMethod]
public void Constructor4_ValueAsContractNameArgument_ShouldSetDefinitionContractNameProperty()
{
var expectations = Expectations.GetContractNames();
foreach (var e in expectations)
{
var export = new Export(e, new Dictionary<string, object>(), () => null);
Assert.AreEqual(e, export.Definition.ContractName);
}
}
[TestMethod]
public void Constructor3_ShouldSetMetadataPropertyToEmptyDictionary()
{
var export = new Export("ContractName", () => null); ;
EnumerableAssert.IsEmpty(export.Metadata);
}
[TestMethod]
public void Constructor4_NullAsMetadataArgument_ShouldSetMetadataPropertyToEmptyDictionary()
{
var export = new Export("ContractName", (IDictionary<string, object>)null, () => null); ;
EnumerableAssert.IsEmpty(export.Metadata);
}
[TestMethod]
public void Constructor3_NullAsMetadataArgument_ShouldSetMetadataPropertyToReadOnlyDictionary()
{
var export = new Export("ContractName", () => null);
ExceptionAssert.Throws<NotSupportedException>(() =>
{
export.Metadata["Value"] = "Value";
});
}
[TestMethod]
public void Constructor4_NullAsMetadataArgument_ShouldSetMetadataPropertyToReadOnlyDictionary()
{
var export = new Export("ContractName", (IDictionary<string, object>)null, () => null);
ExceptionAssert.Throws<NotSupportedException>(() =>
{
export.Metadata["Value"] = "Value";
});
}
[TestMethod]
public void Constructor4_WritableDictionaryAsMetadataArgument_ShouldSetMetadataPropertyToReadOnlyDictionary()
{
var export = new Export("ContractName", new Dictionary<string, object>(), () => null);
ExceptionAssert.Throws<NotSupportedException>(() =>
{
export.Metadata["Value"] = "Value";
});
}
[TestMethod]
public void Constructor4_DictionaryAsMetadataArgument_ShouldSetMetadataProperty()
{
var expectations = Expectations.GetMetadata();
foreach (var e in expectations)
{
var export = new Export("ContractName", e, () => null);
EnumerableAssert.AreEqual(e, export.Metadata);
}
}
[TestMethod]
public void Constructor3_ShouldSetDefinitionMetadataPropertyToEmptyDictionary()
{
var export = new Export("ContractName", () => null); ;
EnumerableAssert.IsEmpty(export.Definition.Metadata);
}
[TestMethod]
public void Constructor4_NullAsMetadataArgument_ShouldSetDefinitionMetadataPropertyToEmptyDictionary()
{
var export = new Export("ContractName", (IDictionary<string, object>)null, () => null); ;
EnumerableAssert.IsEmpty(export.Definition.Metadata);
}
[TestMethod]
public void Constructor3_ShouldSetDefinitionMetadataPropertyToReadOnlyDictionary()
{
var export = new Export("ContractName", () => null);
ExceptionAssert.Throws<NotSupportedException>(() =>
{
export.Definition.Metadata["Value"] = "Value";
});
}
[TestMethod]
public void Constructor4_NullAsMetadataArgument_ShouldSetDefinitionMetadataPropertyToReadOnlyDictionary()
{
var export = new Export("ContractName", (IDictionary<string, object>)null, () => null);
ExceptionAssert.Throws<NotSupportedException>(() =>
{
export.Definition.Metadata["Value"] = "Value";
});
}
[TestMethod]
public void Constructor4_WritableDictionaryAsMetadataArgument_ShouldSetDefinitionMetadataPropertyToReadOnlyDictionary()
{
var export = new Export("ContractName", new Dictionary<string, object>(), () => null);
ExceptionAssert.Throws<NotSupportedException>(() =>
{
export.Definition.Metadata["Value"] = "Value";
});
}
[TestMethod]
public void Constructor4_DictionaryAsMetadataArgument_ShouldSetDefinitionMetadataProperty()
{
var expectations = Expectations.GetMetadata();
foreach (var e in expectations)
{
var export = new Export("ContractName", e, () => null);
EnumerableAssert.AreEqual(e, export.Definition.Metadata);
}
}
[TestMethod]
public void Constructor2_FuncReturningAStringAsExportedValueGetter_ShouldBeReturnedByGetExportedValue()
{
var definition = ExportDefinitionFactory.Create();
var export = new Export(definition, () => "Value");
Assert.AreEqual("Value", export.Value);
}
[TestMethod]
public void Constructor3_FuncReturningAStringAsExportedValueGetter_ShouldBeReturnedByGetExportedValue()
{
var export = new Export("ContractName", () => "Value");
Assert.AreEqual("Value", export.Value);
}
[TestMethod]
public void Constructor4_FuncReturningAStringAsExportedValueGetter_ShouldBeReturnedByGetExportedValue()
{
var export = new Export("ContractName", new Dictionary<string, object>(), () => "Value");
Assert.AreEqual("Value", export.Value);
}
[TestMethod]
public void Constructor2_FuncReturningNullAsExportedValueGetter_ShouldBeReturnedByGetExportedValue()
{
var definition = ExportDefinitionFactory.Create();
var export = new Export(definition, () => null);
Assert.IsNull(export.Value);
}
[TestMethod]
public void Constructor3_FuncReturningNullAsExportedValueGetter_ShouldBeReturnedByGetExportedValue()
{
var export = new Export("ContractName", () => null);
Assert.IsNull(export.Value);
}
[TestMethod]
public void Constructor4_FuncReturningNullAsExportedValueGetter_ShouldBeReturnedByGetExportedValue()
{
var export = new Export("ContractName", new Dictionary<string, object>(), () => null);
Assert.IsNull(export.Value);
}
[TestMethod]
public void Metadata_DerivedExportDefinition_ShouldReturnDefinitionMetadata()
{
var expectations = Expectations.GetMetadata();
foreach (var e in expectations)
{
var definition = ExportDefinitionFactory.Create("ContractName", e);
var export = new DerivedExport(definition);
EnumerableAssert.AreEqual(e, export.Metadata);
}
}
[TestMethod]
public void Definition_WhenNotOverridden_ShouldThrowNotImplemented()
{
var export = new NoOverridesExport();
ExceptionAssert.Throws<NotImplementedException>(() =>
{
var definition = export.Definition;
});
}
[TestMethod]
public void Metadata_WhenDefinitionNotOverridden_ShouldThrowNotImplemented()
{
var export = new NoOverridesExport();
ExceptionAssert.Throws<NotImplementedException>(() =>
{
var definition = export.Metadata;
});
}
[TestMethod]
public void GetExportedValue_WhenGetExportedValueCoreNotOverridden_ShouldThrowNotImplemented()
{
var export = new NoOverridesExport();
ExceptionAssert.Throws<NotImplementedException>(() =>
{
var value = export.Value;
});
}
[TestMethod]
public void GetExportedValue_ShouldCacheExportedValueGetter()
{
int count = 0;
var export = new Export("ContractName", () =>
{
count++;
return count;
});
Assert.AreEqual(1, export.Value);
Assert.AreEqual(1, export.Value);
Assert.AreEqual(1, export.Value);
}
[TestMethod]
public void GetExportedValue_ShouldCacheOverrideGetExportedValueCore()
{
int count = 0;
var export = new DerivedExport(() =>
{
count++;
return count;
});
Assert.AreEqual(1, export.Value);
Assert.AreEqual(1, export.Value);
Assert.AreEqual(1, export.Value);
}
[TestMethod]
public void GetExportedValue_ThrowingFuncAsObjectGetterArgument_ShouldThrow()
{
var exceptionToThrow = new Exception();
var export = new Export("ContractName", new Dictionary<string, object>(), () =>
{
throw exceptionToThrow;
});
ExceptionAssert.Throws(exceptionToThrow, RetryMode.Retry, () =>
{
var value = export.Value;
});
}
private class NoOverridesExport : Export
{
}
private class DerivedExport : Export
{
private readonly Func<object> _exportedValueGetter;
private readonly ExportDefinition _definition;
public DerivedExport(ExportDefinition definition)
{
_definition = definition;
}
public DerivedExport(Func<object> exportedValueGetter)
{
_exportedValueGetter = exportedValueGetter;
}
public override ExportDefinition Definition
{
get { return _definition; }
}
protected override object GetExportedValueCore()
{
return _exportedValueGetter();
}
}
}
}
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