public void CheckMemory_1GUsed_ReturnsTrue()
{
// We'll grab some big chunks but not demand we can get it all. Keep them small enough to stay out of Large Object Heap
var chunks = new List <byte[]>();
for (int i = 0; i < 21000; i++)
{
chunks.Add(new byte[50000]);
}
Assert.That(MemoryManagement.CheckMemory(true, "not much done", false), Is.True);
}
public void CheckMemory_1GUsed_DisplaysDialogOnlyOnce()
{
// We'll grab some big chunks but not demand we can get it all. Keep them small enough to stay out of Large Object Heap
var chunks = new List <byte[]>();
for (int i = 0; i < 21000; i++)
{
chunks.Add(new byte[50000]);
}
Assert.That(MemoryManagement.CheckMemory(true, "not much done", true), Is.True);
// Doing it again should still return true, but you should NOT see the dialog twice.
Assert.That(MemoryManagement.CheckMemory(true, "not much done", true), Is.True);
}
public void CheckMemory_1GUsed_ReturnsTrue()
{
// We'll grab some big chunks but not demand we can get it all. Keep them small enough
// to stay out of Large Object Heap
var desiredNumberOfChunks = Is64BitProcess && HasLargePhysicalMemory ? 42000 : 21000;
var chunks = new List <byte[]>();
for (int i = 0; i < desiredNumberOfChunks; i++)
{
chunks.Add(new byte[50000]);
}
Assert.That(MemoryManagement.CheckMemory(true, "not much done", false), Is.True,
"CheckMemory didn't detect danger");
}
public void CheckMemory_WritesPlausibleNumbersToLogger()
{
Logger.Init();
var dummy = Logger.LogText; // counter-intuitive, but the only way I can find to clear out minor events, in case anything else used logger
MemoryManagement.CheckMemory(true, "this is a test", false); // since not doing GC we really can't predict the return value
var result = Logger.MinorEventsLog;
Assert.That(result, Is.StringContaining("this is a test"));
var re = new Regex(@"\d+,\d+K");
var matches = re.Matches(result).Cast <Match>().ToArray();
// This is a pretty weak test; just proves we're outputting at least 3 numbers over 1000K. (Heap memory is sometimes <1M; virtual is unknown on Linux)
Assert.That(matches, Has.Length.AtLeast(3));
Logger.ShutDown();
Logger.Init();
MemoryManagement.CheckMemory(false, "this is a test", false); // since not doing GC we really can't predict the return value
result = Logger.LogText;
Assert.That(result, Is.StringContaining("this is a test"));
matches = re.Matches(result).Cast <Match>().ToArray();
// Using WriteEvent means out data is in the eventual output twice.
Assert.That(matches, Has.Length.AtLeast(6));
}
public void CheckMemory_NotMuchUsed_ReturnsFalse()
{
GC.Collect(); // In case another test (e.g, CheckMemory_1GUsed_ReturnsTrue) just used a lot
Assert.That(MemoryManagement.CheckMemory(true, "not much done", false), Is.False);
}