public void Solve_WhenExpressionHasAllSolutions_ShouldWriteProperSolution(string expr)
{
//Arrange
SetupSolver();
//Act
TestedSolver.Solve(new[] { expr });
//Assert
ConsoleMock
.Verify(c => c.WriteLine(It.Is <string>(
s => s.Contains("All real numbers"))));
}
public void Solve_WhenCalledWithInvalidExpression_ShouldWriteError(string expression, string errorMessage)
{
//Arrange
SetupSolver();
//Act
TestedSolver.Solve(new[] { expression });
//Assert
ConsoleMock
.Verify(c => c.WriteLine(It.Is <string>(
s => s.Contains(errorMessage))));
}
public void Solve_WhenExpressionHasSingleRationalSolutionAndDegreeOne_ShouldWriteProperSolution(string expr,
string x)
{
//Arrange
SetupSolver();
//Act
TestedSolver.Solve(new[] { expr });
//Assert
ConsoleMock
.Verify(c => c.WriteLine(It.Is <string>(
s => s.Contains("Degree: 1"))));
ConsoleMock
.Verify(c => c.WriteLine(It.Is <string>(
s => s.Contains($" = {x}"))));
}
private void VerifyOutput(string expected)
{
ConsoleMock.Verify(x => x.WriteLine(StringCalculator.OutputPrefix + expected));
}
public void GivenEmptyInputPrgramExits()
{
ConsoleMock.SetupSequence(x => x.Readline()).Returns("");
RunMain("1");
ConsoleMock.Verify(x => x.Readline(), Times.Exactly(1));
}
public void AppAlwaysChecksForAnotherInput()
{
RunMain("1");
ConsoleMock.Verify(x => x.Readline());
}
public void AppAlwaysPromptsForAnotherInput()
{
RunMain("1");
ConsoleMock.Verify(x => x.WriteLine("Another input please"));
}
