AssetsFileHasherTests.cs

using System.IO;
using System.Reflection;
using NUnit.Framework;
using SquishIt.Framework.Resolvers;
using SquishIt.Framework.Utilities;
using SquishIt.Tests.Stubs;
using SquishIt.Tests.Helpers;

namespace SquishIt.Tests
{
    [TestFixture]
    public class AssetsFileHasherTests
    {
        [Test]
        public void DoesNotAppendHashIfFileIsRemote()
        {
            var hashQueryStringKeyName = "v";
            var fileResolver = new FileSystemResolver();
            var hasher = new StubHasher("hash");
            var cssFilePath = @"C:\somepath\output.css";
            var url = "http://www.test.com/image.jpg";

            var assetsFileHasher = new CssAssetsFileHasher(hashQueryStringKeyName, fileResolver, hasher);

            var rewrittenUrl = assetsFileHasher.AppendFileHash(cssFilePath, url);

            Assert.That(rewrittenUrl, Is.EqualTo(url));
        }

        [Test]
        public void DoesNotAppendHashIfFileDoesNotExists()
        {
            var hashQueryStringKeyName = "v";
            var fileResolver = new FileSystemResolver();
            var hasher = new StubHasher("hash");
            var cssFilePath = TestUtilities.PreparePath(@"C:\somepath\output.css");
            var url = "/doesnotexist.jpg";

            var assetsFileHasher = new CssAssetsFileHasher(hashQueryStringKeyName, fileResolver, hasher);

            var rewrittenUrl = assetsFileHasher.AppendFileHash(cssFilePath, url);

            Assert.That(rewrittenUrl, Is.EqualTo(url));
        }

        [Test]
        public void CanAppendFileHashToRelativeUri()
        {
            var hashQueryStringKeyName = "v";
            var hashValue = "hashValue";
            var hasher = new StubHasher(hashValue);
            var fileResolver = new FileSystemResolver();
            var uri = Assembly.GetExecutingAssembly().CodeBase;
            var cssFilePath = Path.GetDirectoryName(uri) + TestUtilities.PreparePath(@"\subdirectory\output.css");
            var url = "../" + Path.GetFileName(uri);
            var assetsFileHasher = new CssAssetsFileHasher(hashQueryStringKeyName, fileResolver, hasher);

            var expectedUrl = url + "?" + hashQueryStringKeyName + "=" + hashValue;

            var rewrittenUrl = assetsFileHasher.AppendFileHash(cssFilePath, url);

            Assert.That(rewrittenUrl, Is.EqualTo(expectedUrl));
        }

        [Test]
        public void CanAppendFileHashToRelativeUriWithAnExistingQueryString()
        {
            var hashQueryStringKeyName = "v";
            var hashValue = "hashValue";
            var hasher = new StubHasher(hashValue);
            var fileResolver = new FileSystemResolver();
            var uri = Assembly.GetExecutingAssembly().CodeBase;
            var cssFilePath = Path.GetDirectoryName(uri) + TestUtilities.PreparePath(@"\subdirectory\output.css");
            var url = "../" + Path.GetFileName(uri) + "?test=value";
            var assetsFileHasher = new CssAssetsFileHasher(hashQueryStringKeyName, fileResolver, hasher);

            var expectedUrl = url + "&" + hashQueryStringKeyName + "=" + hashValue;

            var rewrittenUrl = assetsFileHasher.AppendFileHash(cssFilePath, url);

            Assert.That(rewrittenUrl, Is.EqualTo(expectedUrl));
        }

        [Test]
        public void CanAppendFileHashToAbsoluteUri()
        {
            var hashQueryStringKeyName = "v";
            var hashValue = "hashValue";
            var hasher = new StubHasher(hashValue);
            var uri = Assembly.GetExecutingAssembly().CodeBase;
            var cssFilePath = Path.Combine(Path.GetDirectoryName(uri), @"output.css");
            var url = "/" + Path.GetFileName(uri);
            var pathToResolveTo = Assembly.GetExecutingAssembly().Location;
            var fileResolver = StubResolver.ForFile(pathToResolveTo);
            var assetsFileHasher = new CssAssetsFileHasher(hashQueryStringKeyName, fileResolver, hasher);

            var expectedUrl = url + "?" + hashQueryStringKeyName + "=" + hashValue;

            var rewrittenUrl = assetsFileHasher.AppendFileHash(cssFilePath, url);

            Assert.That(rewrittenUrl, Is.EqualTo(expectedUrl));
        }

        [Test]
        public void CanAppendFileHashToAbsoluteUriWithAnExistingQueryString()
        {
            var hashQueryStringKeyName = "v";
            var hashValue = "hashValue";
            var hasher = new StubHasher(hashValue);
            var uri = Assembly.GetExecutingAssembly().CodeBase;
            var cssFilePath = Path.GetDirectoryName(uri) + @"\output.css";
            var url = "/" + Path.GetFileName(uri) + "?test=value";
            var pathToResolveTo = Assembly.GetExecutingAssembly().Location;
            var fileResolver = StubResolver.ForFile(pathToResolveTo);
            var assetsFileHasher = new CssAssetsFileHasher(hashQueryStringKeyName, fileResolver, hasher);

            var expectedUrl = url + "&" + hashQueryStringKeyName + "=" + hashValue;

            var rewrittenUrl = assetsFileHasher.AppendFileHash(cssFilePath, url);

            Assert.That(rewrittenUrl, Is.EqualTo(expectedUrl));
        }
    }
}