public void TestFindMissingIntMissingFoundLargeFile()
{
// Warning: Running this test will create a 4 GB file on your system during the test.
// Disable the next line to enable the test.
Assert.Inconclusive();
// Initialize file size.
// This is larger than the maximum number of possible positive integers so is a reasonable
// test of a large file.
long fileSizeInts = 1024 * 1024 * 1024; // 4 GB (~1 billion integers)
// Initialize test values.
int exclusionNumber = 15465;
int bufferSizeBytes = 1024 * 1024 * 1024; // Maximum 1 GB of space.
// Write the file.
string fileName = FileHelpers.WriteFileOfInts(fileSizeInts, exclusionValue: exclusionNumber);
// Do test.
try
{
Assert.AreEqual(exclusionNumber, ArrayFindMissingInt1Complete.FindMissingInt(fileName, bufferSizeBytes));
}
finally
{
// Delete the file.
File.Delete(fileName);
}
}
public void TestFindMissingIntMissingFoundVeryLargeFile()
{
// Warning: Running this test will create a 16 GB file on your system during the test.
// Disable the next line to enable the test.
Assert.Inconclusive();
// Warning: Enabling this line will create a 16 GB file.
long fileSizeInts = 1024L * 1024 * 1024 * 4; // 16 GB (~4 billion integers)
// Initialize test values.
int exclusionNumber = 15465;
int bufferSizeBytes = 1024 * 1024 * 1024; // Maximum 1 GB of space.
// Write the file.
string fileName = FileHelpers.WriteFileOfInts(fileSizeInts, exclusionValue: exclusionNumber, fileName: @"C:\Temp\VeryLarge.bin");
// Do test.
try
{
Assert.AreEqual(exclusionNumber, ArrayFindMissingInt1Complete.FindMissingInt(fileName, bufferSizeBytes));
}
finally
{
// Delete the file.
File.Delete(fileName);
}
}
public void TestFindMissingIntErrorBufferTooSmall()
{
// Initialize test data.
var test = new[] { 0, 2, 3, 7, 6, 4, 1, 5, 8, 9 };
// Write the file.
string fileName = FileHelpers.WriteFileFromBuffer(test);
// Do test.
try
{
ArrayFindMissingInt1Complete.FindMissingInt(fileName, 1, 0, 9);
}
catch (ArgumentException)
{
Assert.IsTrue(true);
return;
}
finally
{
// Delete the file.
File.Delete(fileName);
}
Assert.Fail();
}
public void TestFindMissingIntMissingNotFoundBufferMatchEvenBytes()
{
// Initialize test data.
var test = new[] { 0, 2, 3, 7, 6, 4, 1, 5 };
// Write the file.
string fileName = FileHelpers.WriteFileFromBuffer(test);
// Do test.
Assert.AreEqual(-1, ArrayFindMissingInt1Complete.FindMissingInt(fileName, 1, 0, 7));
// Delete the file.
File.Delete(fileName);
}
public void TestFindMissingIntMissingNotFoundMediumFile()
{
// Initialize test values.
int fileSizeInts = 1024 * 1024 * 4; // 16 MB (~ 4 million integers).
int bufferSizeBytes = 1024 * 1024; // 1 MB
// Write the file.
string fileName = FileHelpers.WriteFileOfInts(fileSizeInts, maxValue: int.MaxValue / 1024);
// Do test.
Assert.AreEqual(-1, ArrayFindMissingInt1Complete.FindMissingInt(fileName, bufferSizeBytes, 0, int.MaxValue / 1024));
// Delete the file.
File.Delete(fileName);
}
