public void Postfix_ForGivenQuery_ReturnsExpectedValues(string query, string expectedPostfix)
{
var parser = new PostfixParser();
var postfixedResult = parser.Parse(query);
var actualPostfix = string.Join(string.Empty, postfixedResult.Select(x => x.Value).ToArray());
Assert.Equal(expectedPostfix, actualPostfix);
}
public void Postfix_ForNullValue_ThrowsArgumentNullException()
{
string query = null;
var parser = new PostfixParser();
var ex = Record.Exception(() => parser.Parse(query));
Assert.NotNull(ex);
Assert.IsType <ArgumentNullException>(ex);
}
public void SimpleEquationTest()
{
var parser = new PostfixParser();
string result = parser.Parse(new[]{
new Token(TokenType.Digit, 9),
new Token(TokenType.Minus),
new Token(TokenType.Digit, 5),
new Token(TokenType.Plus),
new Token(TokenType.Digit, 2),
});
Assert.AreEqual("95-2+", result);
}