mirror of https://github.com/SixLabors/ImageSharp
James South
12 years ago
13 changed files with 272 additions and 237 deletions
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// --------------------------------------------------------------------------------------------------------------------
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// <copyright file="StringExtensionsUnitTests.cs" company="James South">
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// Copyright (c) James South.
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// Licensed under the Apache License, Version 2.0.
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// </copyright>
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// <summary>
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// Test harness for the string extensions
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// </summary>
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// --------------------------------------------------------------------------------------------------------------------
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namespace ImageProcessor.Web.UnitTests.Extensions |
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{ |
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using System; |
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using ImageProcessor.Web.Extensions; |
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using NUnit.Framework; |
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/// <summary>
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/// Test harness for the string extensions
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/// </summary>
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[TestFixture] |
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public class StringExtensionsUnitTests |
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{ |
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/// <summary>
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/// Tests the MD5 fingerprint
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/// </summary>
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/// <param name="input">The input value</param>
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/// <param name="expected">The expected output of the hash</param>
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[Test] |
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[TestCase("test input", "2e7f7a62eabf0993239ca17c78c464d9")] |
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[TestCase("lorem ipsum dolor", "96ee002fee25e8b675a477c9750fa360")] |
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[TestCase("LoReM IpSuM DoLoR", "41e201da794c7fbdb8ce5526a71c8c83")] |
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[TestCase("1234567890", "e15e31c3d8898c92ab172a4311be9e84")] |
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public void TestToMd5Fingerprint(string input, string expected) |
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{ |
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string result = input.ToMD5Fingerprint(); |
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bool comparison = result.Equals(expected, StringComparison.InvariantCultureIgnoreCase); |
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Assert.True(comparison); |
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} |
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/// <summary>
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/// Tests the SHA-1 fingerprint
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/// </summary>
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/// <param name="input">The input value</param>
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/// <param name="expected">The expected output of the hash</param>
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[Test] |
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[TestCase("test input", "49883b34e5a0f48224dd6230f471e9dc1bdbeaf5")] |
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[TestCase("lorem ipsum dolor", "75899ad8827a32493928903aecd6e931bf36f967")] |
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[TestCase("LoReM IpSuM DoLoR", "2f44519afae72fc0837b72c6b53cb11338a1f916")] |
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[TestCase("1234567890", "01b307acba4f54f55aafc33bb06bbbf6ca803e9a")] |
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public void TestToSHA1Fingerprint(string input, string expected) |
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{ |
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string result = input.ToSHA1Fingerprint(); |
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bool comparison = result.Equals(expected, StringComparison.InvariantCultureIgnoreCase); |
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Assert.True(comparison); |
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} |
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/// <summary>
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/// Tests if the value is a valid URI path name. I.E the path part of a uri.
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/// </summary>
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/// <param name="input">The value to test</param>
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/// <param name="expected">Whether the value is correct</param>
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/// <remarks>
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/// The full RFC3986 does not seem to pass the test with the square brackets
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/// ':' is failing for some reason in VS but not elsewhere. Could be a build issue.
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/// </remarks>
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[Test] |
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[TestCase("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", true)] |
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[TestCase("-", true)] |
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[TestCase(".", true)] |
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[TestCase("_", true)] |
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[TestCase("~", true)] |
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[TestCase(":", true)] |
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[TestCase("/", true)] |
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[TestCase("?", true)] |
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[TestCase("#", false)] |
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[TestCase("[", false)] |
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[TestCase("]", false)]
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[TestCase("@", true)] |
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[TestCase("!", true)] |
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[TestCase("$", true)] |
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[TestCase("&", true)] |
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[TestCase("'", true)] |
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[TestCase("(", true)] |
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[TestCase(")", true)] |
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[TestCase("*", true)] |
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[TestCase("+", true)] |
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[TestCase(",", true)] |
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[TestCase(";", true)] |
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[TestCase("=", true)] |
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[TestCase("lorem ipsum", false)] |
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[TestCase("é", false)] |
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public void TestIsValidUriPathName(string input, bool expected) |
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{ |
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bool result = input.IsValidVirtualPathName(); |
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Assert.AreEqual(expected, result); |
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} |
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} |
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} |
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@ -0,0 +1,143 @@ |
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// --------------------------------------------------------------------------------------------------------------------
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// <copyright file="StringExtensions.cs" company="James South">
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// Copyright (c) James South.
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// Licensed under the Apache License, Version 2.0.
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// </copyright>
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// <summary>
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// Encapsulates a series of time saving extension methods to the <see cref="T:System.String" /> class.
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// </summary>
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// --------------------------------------------------------------------------------------------------------------------
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namespace ImageProcessor.Web.Extensions |
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{ |
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using System; |
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using System.Globalization; |
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using System.Linq; |
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using System.Security.Cryptography; |
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using System.Text; |
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using System.Text.RegularExpressions; |
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/// <summary>
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/// Encapsulates a series of time saving extension methods to the <see cref="T:System.String"/> class.
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/// </summary>
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public static class StringExtensions |
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{ |
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#region Cryptography
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/// <summary>
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/// Creates an MD5 fingerprint of the String.
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/// </summary>
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/// <param name="expression">The <see cref="T:System.String">String</see> instance that this method extends.</param>
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/// <returns>An MD5 fingerprint of the String.</returns>
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public static string ToMD5Fingerprint(this string expression) |
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{ |
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byte[] bytes = Encoding.Unicode.GetBytes(expression.ToCharArray()); |
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using (MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider()) |
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{ |
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byte[] hash = md5.ComputeHash(bytes); |
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// Concatenate the hash bytes into one long String.
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return hash.Aggregate( |
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new StringBuilder(32), |
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(sb, b) => sb.Append(b.ToString("X2", CultureInfo.InvariantCulture))) |
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.ToString().ToLowerInvariant(); |
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} |
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} |
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/// <summary>
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/// Creates an SHA1 fingerprint of the String.
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/// </summary>
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/// <param name="expression">The <see cref="T:System.String">String</see> instance that this method extends.</param>
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/// <returns>An SHA1 fingerprint of the String.</returns>
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public static string ToSHA1Fingerprint(this string expression) |
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{ |
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byte[] bytes = Encoding.ASCII.GetBytes(expression.ToCharArray()); |
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using (SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider()) |
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{ |
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byte[] hash = sha1.ComputeHash(bytes); |
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// Concatenate the hash bytes into one long String.
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return hash.Aggregate( |
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new StringBuilder(40), |
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(sb, b) => sb.Append(b.ToString("X2", CultureInfo.InvariantCulture))) |
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.ToString().ToLowerInvariant(); |
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} |
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} |
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#endregion
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#region Numbers
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/// <summary>
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/// Creates an array of integers scraped from the String.
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/// </summary>
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/// <param name="expression">The <see cref="T:System.String">String</see> instance that this method extends.</param>
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/// <returns>An array of integers scraped from the String.</returns>
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public static int[] ToPositiveIntegerArray(this string expression) |
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{ |
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if (string.IsNullOrWhiteSpace(expression)) |
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{ |
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throw new ArgumentNullException("expression"); |
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} |
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Regex regex = new Regex(@"[\d+]+(?=[,-])|[\d+]+(?![,-])", RegexOptions.Compiled); |
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MatchCollection matchCollection = regex.Matches(expression); |
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// Get the collections.
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int count = matchCollection.Count; |
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int[] matches = new int[count]; |
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// Loop and parse the int values.
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for (int i = 0; i < count; i++) |
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{ |
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matches[i] = int.Parse(matchCollection[i].Value, CultureInfo.InvariantCulture); |
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} |
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return matches; |
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} |
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/// <summary>
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/// Creates an array of floats scraped from the String.
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/// </summary>
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/// <param name="expression">The <see cref="T:System.String">String</see> instance that this method extends.</param>
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/// <returns>An array of floats scraped from the String.</returns>
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public static float[] ToPositiveFloatArray(this string expression) |
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{ |
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if (string.IsNullOrWhiteSpace(expression)) |
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{ |
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throw new ArgumentNullException("expression"); |
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} |
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Regex regex = new Regex(@"[\d+\.]+(?=[,-])|[\d+\.]+(?![,-])", RegexOptions.Compiled); |
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MatchCollection matchCollection = regex.Matches(expression); |
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// Get the collections.
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int count = matchCollection.Count; |
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float[] matches = new float[count]; |
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// Loop and parse the int values.
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for (int i = 0; i < count; i++) |
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{ |
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matches[i] = float.Parse(matchCollection[i].Value, CultureInfo.InvariantCulture); |
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} |
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return matches; |
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} |
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#endregion
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#region Files and Paths
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/// <summary>
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/// Checks the string to see whether the value is a valid virtual path name.
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/// </summary>
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/// <param name="expression">The <see cref="T:System.String">String</see> instance that this method extends.</param>
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/// <returns>True if the given string is a valid virtual path name</returns>
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public static bool IsValidVirtualPathName(this string expression) |
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{ |
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Uri uri; |
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return Uri.TryCreate(expression, UriKind.Relative, out uri) && uri.IsWellFormedOriginalString(); |
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} |
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#endregion
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} |
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} |
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