public void TestLowestGradeWithoutValues()
{
var book = new InMemoryBook("Gabriel's");
void Act() => book.ComputeStatistics();
var exception = Assert.Throws <Exception>((Action)Act);
Assert.Equal("Grades is empty", exception.Message);
}
public void CanAddLetterGrade()
{
// arrange
var book = new InMemoryBook("Letters");
// act
book.AddGrade('B');
var stats = book.ComputeStatistics();
// assert
Assert.Equal(80, stats.Average);
}
public void GetALetter()
{
var book = new InMemoryBook("Gabriel's");
book.AddGrade(92.1);
book.AddGrade(99.3);
book.AddGrade(87.2);
var letter = book.ComputeStatistics().Letter;
Assert.Equal('A', letter);
}
public void GetCLetter()
{
var book = new InMemoryBook("Gabriel's");
book.AddGrade(70.1);
book.AddGrade(80.3);
book.AddGrade(71);
var letter = book.ComputeStatistics().Letter;
Assert.Equal('C', letter);
}
public void GetFLetter()
{
var book = new InMemoryBook("Gabriel's");
book.AddGrade(33.1);
book.AddGrade(60.3);
book.AddGrade(21);
var letter = book.ComputeStatistics().Letter;
Assert.Equal('F', letter);
}
public void TestLowestGradeWithValues()
{
var book = new InMemoryBook("Gabriel's");
book.AddGrade(29.3);
book.AddGrade(41.8);
book.AddGrade(79.2);
book.AddGrade(63.1);
var lowestGrade = book.ComputeStatistics().LowestGrade;
Assert.Equal(29.3, lowestGrade);
}
public void TestComputeAverage()
{
var book = new InMemoryBook("Gabriel's");
book.AddGrade(39.2);
book.AddGrade(81.4);
book.AddGrade(67.6);
book.AddGrade(70);
var average = book.ComputeStatistics().Average;
Assert.Equal(64.55, average, 1);
}
public void ComputeStatistics()
{
// arrange
var book = new InMemoryBook("Test Book");
book.AddGrade(30.1);
book.AddGrade(40.2);
book.AddGrade(50.5);
// act
var stats = book.ComputeStatistics();
// assert
Assert.Equal(40.27, stats.Average, 2);
Assert.Equal(30.1, stats.Low);
Assert.Equal(50.5, stats.High);
Assert.Equal('F', stats.Letter);
}
/* is an attribute - it is a little peace of data
* that is attached to the following method. Xunit
* looks for methods with this attribute to know which
* methods is actual tests it should run. */
public void BooksComputesAverageGrade()
{
// Unit testting is often divided into three parts: arrange, act
//arrange - the setup for the test
var book = new InMemoryBook("");
book.AddGrade(90);
book.AddGrade(60);
book.AddGrade(20);
// act - handling of the setup
var result = book.ComputeStatistics();
//assert - just assertion
Assert.Equal(56.6, result.averageGrade, 0);
Assert.Equal(20, result.lowestGrade);
Assert.Equal(90, result.highestGrade);
Assert.Equal('F', result.letterGrade);
}