Created
October 26, 2019 23:21
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// This test should apply equally to Unix, but this reliably hits a particular one of the | |
// myriad ways that assembly load can fail | |
[ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsWindows))] | |
public void LoadFile_ValidPEBadIL_ThrowsBadImageFormatExceptionWithPath() | |
{ | |
string path = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), "kernelbase.dll"); | |
if (!File.Exists(path)) | |
return; | |
AssertExtensions.ThrowsContains<BadImageFormatException>(() => Assembly.LoadFile(path), path); | |
} | |
[Theory] | |
[InlineData(0)] | |
[InlineData(5)] | |
[InlineData(50)] | |
[InlineData(100)] | |
// Higher numbers hit some codepaths that currently don't include the path in the exception message | |
public void LoadFile_ValidPEBadIL_ThrowsBadImageFormatExceptionWithPath(int seek) | |
{ | |
ReadOnlySpan<byte> garbage = Encoding.UTF8.GetBytes(new string('X', 500)); | |
string path = GetTestFilePath(); | |
File.Copy(SourceTestAssemblyPath, path); | |
using (var fs = new FileStream(path, FileMode.Open)) | |
{ | |
fs.Seek(seek, SeekOrigin.Begin); | |
fs.Write(garbage); | |
} | |
AssertExtensions.ThrowsContains<BadImageFormatException>(() => Assembly.LoadFile(path), path); | |
} |
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