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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Globalization;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Http.ValueProviders.Providers
{
public class NameValueCollectionValueProviderTest
{
private static readonly NameValueCollection _backingStore = new NameValueCollection()
{
{ "foo", "fooValue1" },
{ "foo", "fooValue2" },
{ "bar.baz", "someOtherValue" }
};
[Fact]
public void Constructor_GuardClauses()
{
// Act & assert
Assert.ThrowsArgumentNull(
() => new NameValueCollectionValueProvider(values: null, culture: CultureInfo.InvariantCulture),
"values");
Assert.ThrowsArgumentNull(
() => new NameValueCollectionValueProvider(valuesFactory: null, culture: CultureInfo.InvariantCulture),
"valuesFactory");
}
[Fact]
public void ContainsPrefix_GuardClauses()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act & assert
Assert.ThrowsArgumentNull(
() => valueProvider.ContainsPrefix(null),
"prefix");
}
[Fact]
public void ContainsPrefix_WithEmptyCollection_ReturnsFalseForEmptyPrefix()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(new NameValueCollection(), null);
// Act
bool result = valueProvider.ContainsPrefix("");
// Assert
Assert.False(result);
}
[Fact]
public void ContainsPrefix_WithNonEmptyCollection_ReturnsTrueForEmptyPrefix()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act
bool result = valueProvider.ContainsPrefix("");
// Assert
Assert.True(result);
}
[Fact]
public void ContainsPrefix_WithNonEmptyCollection_ReturnsTrueForKnownPrefixes()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act & Assert
Assert.True(valueProvider.ContainsPrefix("foo"));
Assert.True(valueProvider.ContainsPrefix("bar"));
Assert.True(valueProvider.ContainsPrefix("bar.baz"));
}
[Fact]
public void ContainsPrefix_WithNonEmptyCollection_ReturnsFalseForUnknownPrefix()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act
bool result = valueProvider.ContainsPrefix("biff");
// Assert
Assert.False(result);
}
[Fact]
public void GetKeysFromPrefix_GuardClauses()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act & assert
Assert.ThrowsArgumentNull(
() => valueProvider.GetKeysFromPrefix(null),
"prefix");
}
[Fact]
public void GetKeysFromPrefix_EmptyPrefix_ReturnsAllPrefixes()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act
IDictionary<string, string> result = valueProvider.GetKeysFromPrefix("");
// Assert
Assert.Equal(2, result.Count);
Assert.Equal("foo", result["foo"]);
Assert.Equal("bar", result["bar"]);
}
[Fact]
public void GetKeysFromPrefix_UnknownPrefix_ReturnsEmptyDictionary()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act
IDictionary<string, string> result = valueProvider.GetKeysFromPrefix("abc");
// Assert
Assert.Empty(result);
}
[Fact]
public void GetKeysFromPrefix_KnownPrefix_ReturnsMatchingItems()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act
IDictionary<string, string> result = valueProvider.GetKeysFromPrefix("bar");
// Assert
KeyValuePair<string, string> kvp = Assert.Single(result);
Assert.Equal("baz", kvp.Key);
Assert.Equal("bar.baz", kvp.Value);
}
[Fact]
public void GetValue_GuardClauses()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act & assert
Assert.ThrowsArgumentNull(
() => valueProvider.GetValue(null),
"key");
}
[Fact]
public void GetValue_SingleValue()
{
// Arrange
var culture = CultureInfo.GetCultureInfo("fr-FR");
var valueProvider = new NameValueCollectionValueProvider(_backingStore, culture);
// Act
ValueProviderResult vpResult = valueProvider.GetValue("bar.baz");
// Assert
Assert.NotNull(vpResult);
Assert.Equal(new[] { "someOtherValue" }, (string[])vpResult.RawValue);
Assert.Equal("someOtherValue", vpResult.AttemptedValue);
Assert.Equal(culture, vpResult.Culture);
}
[Fact]
public void GetValue_MultiValue()
{
// Arrange
var culture = CultureInfo.GetCultureInfo("fr-FR");
var valueProvider = new NameValueCollectionValueProvider(_backingStore, culture);
// Act
ValueProviderResult vpResult = valueProvider.GetValue("foo");
// Assert
Assert.NotNull(vpResult);
Assert.Equal(new[] { "fooValue1", "fooValue2" }, (string[])vpResult.RawValue);
Assert.Equal("fooValue1,fooValue2", vpResult.AttemptedValue);
Assert.Equal(culture, vpResult.Culture);
}
[Fact]
public void GetValue_ReturnsNullIfKeyNotFound()
{
// Arrange
var valueProvider = new NameValueCollectionValueProvider(_backingStore, null);
// Act
ValueProviderResult vpResult = valueProvider.GetValue("bar");
// Assert
Assert.Null(vpResult);
}
}
}
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