public void SeedsToUseReturnsCorrectNumberOfSeeds()
{
var numberOfSeeds = 6;
var seedsToUse = SapsUtils.SeedsToUse(numberOfSeeds, 42);
seedsToUse.Count().ShouldBe(numberOfSeeds);
}
public void CreateParameterTreeReturnsIndependentSapsParameters()
{
var tree = SapsUtils.CreateParameterTree();
// Check root is an and node, i.e. independent parameters follow.
var root = tree.Root;
(root is AndNode).ShouldBeTrue("Parameters are not independent.");
// Try and get all parameters needed for Saps from those node's children.
var alpha = root.Children.Single(child => TestUtils.RepresentsParameter(child, "alpha")) as IParameterNode;
var rho = root.Children.Single(child => TestUtils.RepresentsParameter(child, "rho")) as IParameterNode;
var ps = root.Children.Single(child => TestUtils.RepresentsParameter(child, "ps")) as IParameterNode;
var wp = root.Children.Single(child => TestUtils.RepresentsParameter(child, "wp")) as IParameterNode;
// Check that no other parameters exist in the tree.
(root.Children.Count() == 4 && !root.Children.Any(child => child.Children.Any())).ShouldBeTrue("Only 4 parameters are needed for SAPS.");
// Check parameter domains.
(alpha.Domain is LogDomain).ShouldBeTrue("alpha should be distributed logarithmically.");
TestUtils.CheckRange((LogDomain)alpha.Domain, "alpha", expectedMinimum: 1.01, expectedMaximum: 1.4);
(rho.Domain is ContinuousDomain).ShouldBeTrue("rho should be distributed uniformly.");
TestUtils.CheckRange((ContinuousDomain)rho.Domain, "rho", expectedMinimum: 0, expectedMaximum: 1);
(ps.Domain is ContinuousDomain).ShouldBeTrue("ps should be distributed uniformly.");
TestUtils.CheckRange((ContinuousDomain)ps.Domain, "ps", 0, 0.2);
(wp.Domain is ContinuousDomain).ShouldBeTrue("wp should be distributed uniformly.");
TestUtils.CheckRange((ContinuousDomain)wp.Domain, "wp", 0, 0.06);
}
public void CreateInstancesIgnoresFilesNotInCnfFormat()
{
// Call method.
var instances = SapsUtils.CreateInstances(this._instanceFolder, 1, 42);
// Check that no non-cnf file has been translated into an instance.
var instancePaths = instances.Select(instance => instance.Path);
instancePaths.Any(path => SapsUtilsTests.NonCnfFileNames.Any(file => path.Contains(file)))
.ShouldBeFalse("Not all non-cnf files have been ignored.");
}
public void CreateInstancesCorrectlyExtractsPathsToCnfFiles()
{
// Call method.
var instances = SapsUtils.CreateInstances(this._instanceFolder, 1, 42);
// Check that file names of instances match the complete paths of all .cnf files.
var expectedPaths = SapsUtilsTests.CnfFileNames.Select(name => this._instanceFolder + Path.DirectorySeparatorChar + name);
var instancePaths = instances.Select(instance => instance.Path);
expectedPaths.ShouldBe(
instancePaths,
true,
$"{TestUtils.PrintList(instancePaths)} should have been equal to {TestUtils.PrintList(expectedPaths)}.");
}
public void CreateInstancesPrintsMessageIfItCannotOpenFolder()
{
TestUtils.CheckOutput(
action: () =>
{
// Call CreateInstances with a non existant directory path.
try
{
SapsUtils.CreateInstances("foobarFolder", 1, 42);
}
catch (DirectoryNotFoundException)
{
// This is expected.
}
},
check: consoleOutput =>
{
// Check that information about it is written to console.
StringReader reader = new StringReader(consoleOutput.ToString());
reader.ReadLine().ShouldContain("foobarFolder", "The problematic path did not get printed.");
reader.ReadLine().ShouldBe("Cannot open folder.", "Cause of exception has not been printed.");
});
}
public void CreateInstancesThrowsExceptionIfItCannotOpenFolder()
{
Exception exception =
Assert.Throws <DirectoryNotFoundException>(
() => { SapsUtils.CreateInstances("foobarFolder", 1, 42); });
}
