public void GradeBook_AddGrade_ThrowsErrorIfValueNotBetween0And100()
{
var book = new InMemoryGradeBook("test");
ArgumentException ex = Assert.Throws <ArgumentException>(() => book.AddGrade(130.0));
Assert.Equal("Invalid grade", ex.Message);
}
public void GradeBook_AddGrade_AddsGradeToGradesList()
{
var book = new InMemoryGradeBook("test");
book.AddGrade(30.0);
var expected = 30.0;
var actual = book.GetGradeBookStatistics().Average;
Assert.Equal(expected, actual);
}
public void GradeBook_GetGradeBookStatistics_CalculatesStatsFromGradeBookList()
{
// Arrange
InMemoryGradeBook book = new InMemoryGradeBook("");
book.AddGrade(89.1);
book.AddGrade(90.5);
book.AddGrade(77.3);
// Act
var result = book.GetGradeBookStatistics();
// Assert
Assert.Equal(85.6, result.Average, 1);
Assert.Equal(90.5, result.High, 1);
Assert.Equal(77.3, result.Low, 1);
Assert.Equal('B', result.LetterGrade);
}
private void GetBookAndSetName(InMemoryGradeBook book, string newName)
{
book = new InMemoryGradeBook(newName);
}
