94 lines
3.4 KiB
C#
94 lines
3.4 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using Microsoft.AspNetCore.Mvc.ModelBinding;
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using Xunit;
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namespace Microsoft.AspNetCore.Mvc.ViewFeatures
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{
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public class ViewDataOfTTest
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{
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[Fact]
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public void SettingModelThrowsIfTheModelIsNull()
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{
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// Arrange
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var viewDataOfT = new ViewDataDictionary<int>(new EmptyModelMetadataProvider());
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ViewDataDictionary viewData = viewDataOfT;
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// Act and Assert
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Exception ex = Assert.Throws<InvalidOperationException>(() => viewData.Model = null);
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Assert.Equal("The model item passed is null, but this ViewDataDictionary instance requires a non-null model item of type 'System.Int32'.", ex.Message);
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}
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[Fact]
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public void SettingModelThrowsIfTheModelIsIncompatible()
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{
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// Arrange
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var viewDataOfT = new ViewDataDictionary<string>(new EmptyModelMetadataProvider());
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ViewDataDictionary viewData = viewDataOfT;
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// Act and Assert
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Exception ex = Assert.Throws<InvalidOperationException>(() => viewData.Model = DateTime.UtcNow);
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Assert.Equal("The model item passed into the ViewDataDictionary is of type 'System.DateTime', but this ViewDataDictionary instance requires a model item of type 'System.String'.", ex.Message);
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}
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[Fact]
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public void SettingModelWorksForCompatibleTypes()
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{
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// Arrange
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var value = "some value";
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var viewDataOfT = new ViewDataDictionary<object>(new EmptyModelMetadataProvider());
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ViewDataDictionary viewData = viewDataOfT;
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// Act
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viewData.Model = value;
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// Assert
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Assert.Same(value, viewDataOfT.Model);
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}
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[Fact]
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public void PropertiesInitializedCorrectly()
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{
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// Arrange
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var viewData = new ViewDataDictionary<string>(new EmptyModelMetadataProvider());
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// Act & Assert
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Assert.Empty(viewData);
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Assert.Empty(viewData);
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Assert.False(viewData.IsReadOnly);
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Assert.NotNull(viewData.Keys);
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Assert.Empty(viewData.Keys);
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Assert.Null(viewData.Model);
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Assert.NotNull(viewData.ModelMetadata);
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Assert.NotNull(viewData.ModelState);
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Assert.NotNull(viewData.TemplateInfo);
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Assert.Equal(0, viewData.TemplateInfo.TemplateDepth);
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Assert.Equal(string.Empty, viewData.TemplateInfo.FormattedModelValue);
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Assert.Equal(string.Empty, viewData.TemplateInfo.HtmlFieldPrefix);
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Assert.NotNull(viewData.Values);
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Assert.Empty(viewData.Values);
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}
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[Fact]
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public void TemplateInfoPropertiesAreNeverNull()
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{
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// Arrange
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var viewData = new ViewDataDictionary<string>(new EmptyModelMetadataProvider());
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// Act
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viewData.TemplateInfo.FormattedModelValue = null;
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viewData.TemplateInfo.HtmlFieldPrefix = null;
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// Assert
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Assert.Equal(string.Empty, viewData.TemplateInfo.FormattedModelValue);
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Assert.Equal(string.Empty, viewData.TemplateInfo.HtmlFieldPrefix);
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}
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}
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}
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