public void UseNonExistingCode()
{
var codeGenerator = new CodeGenerator();
var codes = new CodesCollection();
var codeLength = 8;
var numberOfCodesToGenerate = 10;
var wasSuccess = codeGenerator.TryAddNewUniqueCodes(codes, codeLength, numberOfCodesToGenerate, out _);
Assert.IsTrue(wasSuccess);
Assert.AreEqual(10, codes.Count);
Code code;
while (true)
{
code = codeGenerator.GenerateCode(codeLength);
if (!codes.Contains(code))
{
break;
}
}
var codeState = codes.CheckCode(code);
Assert.AreEqual(CodeState.DoesNotExist, codeState);
var states = codes.GroupBy(c => c.State).ToDictionary(g => g.Key, g => g.Count());
Assert.AreEqual(1, states.Count);
Assert.AreEqual(numberOfCodesToGenerate, states[CodeState.NotUsed]);
Assert.AreEqual(numberOfCodesToGenerate, codes.Count);
}
public void UseUsedCodeTest()
{
var codes = new CodesCollection();
var generator = new CodeGenerator();
var codeLength = 8;
var numberOfCodesToGenerate = 10;
var wasSuccess = generator.TryAddNewUniqueCodes(codes, codeLength, numberOfCodesToGenerate, out _);
Assert.IsTrue(wasSuccess);
Assert.AreEqual(numberOfCodesToGenerate, codes.Count);
var codeState = codes.CheckCode(codes.First());
Assert.AreEqual(CodeState.NotUsed, codeState);
codeState = codes.CheckCode(codes.First());
Assert.AreEqual(CodeState.Used, codeState);
var states = codes.GroupBy(c => c.State).ToDictionary(g => g.Key, g => g.Count());
Assert.AreEqual(2, states.Count);
Assert.AreEqual(numberOfCodesToGenerate - 1, states[CodeState.NotUsed]);
Assert.AreEqual(1, states[CodeState.Used]);
Assert.AreEqual(numberOfCodesToGenerate, codes.Count);
}
public void GenerateAndAddCodesToHashSetTest(int codeLength, int numberOfCodesToGenerate)
{
var generator = new CodeGenerator();
var codes = new CodesCollection();
var wasSuccessful = generator.TryAddNewUniqueCodes(codes, codeLength, numberOfCodesToGenerate, out var newCodes);
Assert.AreEqual(numberOfCodesToGenerate, newCodes.Count);
Assert.AreEqual(numberOfCodesToGenerate, codes.Count);
Assert.IsTrue(wasSuccessful);
}
public void CodesGenerationAttemptsCeilingTest()
{
var generator = new CodeGenerator();
var codes = new CodesCollection();
var wasSuccessful = generator.TryAddNewUniqueCodes(codes, 0, 1, out _);
Assert.AreEqual(1, codes.Count);
Assert.IsTrue(wasSuccessful);
wasSuccessful = generator.TryAddNewUniqueCodes(codes, 0, 1, out _);
Assert.AreEqual(1, codes.Count);
Assert.IsFalse(wasSuccessful);
}
public void UseCodeWhenCodeCollectionIsEmpty()
{
var codeGenerator = new CodeGenerator();
var codes = new CodesCollection();
var codeLength = 8;
var code = codeGenerator.GenerateCode(codeLength);
var codeState = codes.CheckCode(code);
Assert.AreEqual(CodeState.DoesNotExist, codeState);
var states = codes.GroupBy(c => c.State).ToDictionary(g => g.Key, g => g.Count());
Assert.AreEqual(0, states.Count);
Assert.AreEqual(0, codes.Count);
}
public void CodePseudoUniquenessTest()
{
var generator = new CodeGenerator();
var codes = new CodesCollection();
var numberOfCodesToGenerateFirstTime = 10_000_000;
var wasSuccessful = generator.TryAddNewUniqueCodes(codes, 8, numberOfCodesToGenerateFirstTime, out var newCodes);
Assert.AreEqual(numberOfCodesToGenerateFirstTime, newCodes.Count);
Assert.AreEqual(numberOfCodesToGenerateFirstTime, codes.Count);
Assert.IsTrue(wasSuccessful);
var numberOfCodesToGenerateSecondTime = 3_000_000;
wasSuccessful = generator.TryAddNewUniqueCodes(codes, 8, numberOfCodesToGenerateSecondTime, out newCodes);
Assert.AreEqual(numberOfCodesToGenerateSecondTime, newCodes.Count);
Assert.AreEqual(numberOfCodesToGenerateFirstTime + numberOfCodesToGenerateSecondTime, codes.Count);
Assert.IsTrue(wasSuccessful);
Assert.AreEqual(numberOfCodesToGenerateFirstTime + numberOfCodesToGenerateSecondTime, codes.Select(c => c.Value).Distinct().Count());
}
public MainPageViewModel()
{
Codes = new CodesCollection();
Codes.ReadCodes();
RefreshButtonCommand = new Command(OnRefreshButtonClicked);
}
