58 lines
2.0 KiB
C#
58 lines
2.0 KiB
C#
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// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved. See License.txt in the project root for license information.
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namespace System.ComponentModel.DataAnnotations
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{
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using System.Data.Entity.Resources;
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using Xunit;
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public class MinLengthAttributeTests
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{
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[Fact]
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public void Length_returns_set_length()
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{
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Assert.Equal(10, new MinLengthAttribute(10).Length);
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Assert.Equal(0, new MinLengthAttribute(0).Length);
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// This only throws when IsValid is called
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Assert.Equal(-1, new MinLengthAttribute(-1).Length);
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}
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[Fact]
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public void IsValid_throws_for_negative_lengths()
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{
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var attribute = new MinLengthAttribute(-1);
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Assert.Equal(
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Strings.MinLengthAttribute_InvalidMinLength,
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Assert.Throws<InvalidOperationException>(() => attribute.IsValid("Rincewind")).Message);
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}
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[Fact]
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public void IsValid_throws_for_object_that_is_not_string_or_array()
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{
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Assert.Throws<InvalidCastException>(() => new MinLengthAttribute(0).IsValid(new Random()));
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}
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[Fact]
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public void IsValid_returns_true_for_null()
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{
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Assert.True(new MinLengthAttribute(10).IsValid(null));
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}
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[Fact]
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public void IsValid_validates_string_length()
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{
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Assert.True(new MinLengthAttribute(0).IsValid("The Luggage"));
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Assert.True(new MinLengthAttribute(4).IsValid("Hrun"));
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Assert.False(new MinLengthAttribute(11).IsValid("Mad Hamish"));
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}
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[Fact]
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public void IsValid_validates_array_length()
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{
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Assert.True(new MinLengthAttribute(0).IsValid(new int[500]));
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Assert.True(new MinLengthAttribute(10).IsValid(new string[10]));
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Assert.False(new MinLengthAttribute(5).IsValid(new byte[4]));
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}
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}
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}
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