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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Moq;
using Xunit;
namespace ScriptCs.Tests
{
public class FileProcessorTests
{
private List<string> file1 = new List<string>
{
"using System;",
@"Console.WriteLine(""Hello Script 1"");",
@"Console.WriteLine(""Loading Script 2"");",
@"#load ""script2.csx""",
@"Console.WriteLine(""Loaded Script 2"");",
@"Console.WriteLine(""Loading Script 4"");",
@"#load ""script4.csx"";",
@"Console.WriteLine(""Loaded Script 4"");",
@"Console.WriteLine(""Goodbye Script 1"");"
};
private List<string> file2 = new List<string>
{
"using System;",
@"Console.WriteLine(""Hello Script 2"");",
@"Console.WriteLine(""Loading Script 3"");",
@"#load ""script3.csx""",
@"Console.WriteLine(""Loaded Script 3"");",
@"Console.WriteLine(""Goodbye Script 2"");"
};
private List<string> file3 = new List<string>
{
"using System;",
"using System.Collections.Generic;",
@"Console.WriteLine(""Hello Script 3"");",
@"Console.WriteLine(""Goodbye Script 3"");"
};
private List<string> file4 = new List<string>
{
"using System;",
"using System.Core;",
@"Console.WriteLine(""Hello Script 4"");",
@"Console.WriteLine(""Goodbye Script 4"");"
};
private readonly Mock<IFileSystem> _fileSystem;
public FileProcessorTests()
{
_fileSystem = new Mock<IFileSystem>();
_fileSystem.SetupGet(x => x.NewLine).Returns(Environment.NewLine);
_fileSystem.Setup(x => x.ReadFileLines(It.Is<string>(f => f == "\\script1.csx")))
.Returns(file1.ToArray());
_fileSystem.Setup(x => x.ReadFileLines(It.Is<string>(f => f == "\\script2.csx")))
.Returns(file2.ToArray());
_fileSystem.Setup(x => x.ReadFileLines(It.Is<string>(f => f == "\\script3.csx")))
.Returns(file3.ToArray());
_fileSystem.Setup(x => x.ReadFileLines(It.Is<string>(f => f == "\\script4.csx")))
.Returns(file4.ToArray());
}
[Fact]
public void MultipleUsingStatementsShouldProduceDistinctOutput()
{
var processor = new FilePreProcessor(_fileSystem.Object);
var output = processor.ProcessFile("\\script1.csx");
var splitOutput = output.Split(new[] {Environment.NewLine}, StringSplitOptions.None);
_fileSystem.Verify(x => x.ReadFileLines(It.Is<string>(i => i.StartsWith("\\script"))),Times.Exactly(4));
Assert.Equal(3, splitOutput.Count(x => x.TrimStart(' ').StartsWith("using ")));
}
[Fact]
public void UsingStateMentsShoulAllBeAtTheTop()
{
var processor = new FilePreProcessor(_fileSystem.Object);
var output = processor.ProcessFile("\\script1.csx");
var splitOutput = output.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
var lastUsing = splitOutput.ToList().FindLastIndex(x => x.TrimStart(' ').StartsWith("using "));
var firsNotUsing = splitOutput.ToList().FindIndex(x => !x.TrimStart(' ').StartsWith("using "));
Assert.True(lastUsing < firsNotUsing);
}
[Fact]
public void ThreeLoadedFilesShoulAllBeCalledOnce()
{
var processor = new FilePreProcessor(_fileSystem.Object);
var output = processor.ProcessFile("\\script1.csx");
_fileSystem.Verify(x => x.ReadFileLines(It.Is<string>(i => i == "\\script1.csx")), Times.Once());
_fileSystem.Verify(x => x.ReadFileLines(It.Is<string>(i => i == "\\script2.csx")), Times.Once());
_fileSystem.Verify(x => x.ReadFileLines(It.Is<string>(i => i == "\\script3.csx")), Times.Once());
_fileSystem.Verify(x => x.ReadFileLines(It.Is<string>(i => i == "\\script4.csx")), Times.Once());
}
[Fact]
public void LoadBeforeUsingShouldBeAllowed()
{
var file = new List<string>
{
@"#load ""script4.csx""",
"",
"using System;",
@"Console.WriteLine(""abc"");"
};
_fileSystem.Setup(x => x.ReadFileLines(It.Is<string>(f => f == "\\file.csx"))).Returns(file.ToArray());
var processor = new FilePreProcessor(_fileSystem.Object);
var output = processor.ProcessFile("\\file.csx");
var splitOutput = output.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
var lastUsing = splitOutput.ToList().FindLastIndex(x => x.TrimStart(' ').StartsWith("using "));
var firsNotUsing = splitOutput.ToList().FindIndex(x => !x.TrimStart(' ').StartsWith("using "));
Assert.Equal(2, splitOutput.Count(x => x.TrimStart(' ').StartsWith("using ")));
Assert.True(lastUsing < firsNotUsing);
}
[Fact]
public void UsingInCodeDoesNotCountAsUsingImport()
{
var file = new List<string>
{
@"#load ""script4.csx""",
"",
"using System;",
"using System.IO;",
"Console.WriteLine();",
@"using (var stream = new MemoryStream) {",
@"//do stuff",
@"}"
};
_fileSystem.Setup(x => x.ReadFileLines(It.Is<string>(f => f == "\\file.csx"))).Returns(file.ToArray());
var processor = new FilePreProcessor(_fileSystem.Object);
var output = processor.ProcessFile("\\file.csx");
var splitOutput = output.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
var firstNonImportUsing = splitOutput.ToList().FindIndex(x => x.TrimStart(' ').StartsWith("using ") && !x.Contains(";"));
var firstCodeLine = splitOutput.ToList().FindIndex(x => x.Contains("Console"));
Assert.True(firstNonImportUsing > firstCodeLine);
}
}
}