static void AssertEqualForAllMethods(string?expected, string fileName, IReadOnlyList <string> searchPath)
{
Assert.Equal(expected, SearchPathSearcher.FindFile(fileName, false, null));
Assert.Equal(expected, SearchPathSearcher.FindFile(fileName, true, null));
Assert.Equal(expected, SearchPathSearcher.FindFile(fileName, false, searchPath));
Assert.Equal(expected, SearchPathSearcher.FindFile(fileName, true, searchPath));
}
public void CanFindFile()
{
using var temp = new TemporaryDirectory();
var searchPath = new string[] { temp.Location, Path.Join(temp.Location, "dir") };
// temp / randomName
// temp / dir / a
// temp / dir / randomName
// temp / dir2 / a (not included in the search path)
// cwd / randomName
var randomName = Path.GetRandomFileName();
Directory.CreateDirectory(Path.Join(temp.Location, "dir"));
Directory.CreateDirectory(Path.Join(temp.Location, "dir2"));
CreateEmptyFile(Path.Join(temp.Location, randomName));
CreateEmptyFile(Path.Join(temp.Location, "dir", "a"));
CreateEmptyFile(Path.Join(temp.Location, "dir", randomName));
CreateEmptyFile(Path.Join(temp.Location, "dir2", "a"));
CreateEmptyFile(Path.Join(Environment.CurrentDirectory, randomName));
// No path separator
// Not found
Assert.Null(
SearchPathSearcher.FindFile(randomName, false, null));
// Found from the search path
Assert.Equal(
Path.Join(temp.Location, randomName),
SearchPathSearcher.FindFile(randomName, false, searchPath));
// Found from the current directory
Assert.Equal(
Path.Join(Environment.CurrentDirectory, randomName),
SearchPathSearcher.FindFile(randomName, true, null));
Assert.Equal(
Path.Join(Environment.CurrentDirectory, randomName),
SearchPathSearcher.FindFile(randomName, true, searchPath));
// Relative path
Assert.Equal(
Path.Join(Environment.CurrentDirectory, ".", randomName),
SearchPathSearcher.FindFile(Path.Join(".", randomName), true, searchPath));
Assert.Null(
SearchPathSearcher.FindFile(Path.Join(".", randomName), false, searchPath));
// Absolute path
AssertEqualForAllMethods(
Path.Join(temp.Location, randomName),
Path.Join(temp.Location, randomName),
searchPath);
AssertEqualForAllMethods(
Path.Join(temp.Location, "dir2", randomName),
Path.Join(temp.Location, "dir2", randomName),
searchPath);