public void Numbers_dont_count()
{
var input = new[] { "Testing, 1, 2, 3" };
var actual = ParallelLetterFrequency.Calculate(input);
Assert.False(actual.ContainsKey('1'));
}
public void Punctuation_doesnt_count()
{
var input = new[] { OdeAnDieFreude };
var actual = ParallelLetterFrequency.Calculate(input);
Assert.False(actual.ContainsKey(','));
}
public void ShortTexts()
{
var input = Enumerable.Repeat("abc", 10_000_000);
var actual = ParallelLetterFrequency.Calculate(input);
var expected = new Dictionary <char, int>
{
{ 'a', 10_000_000 },
public void Many_empty_texts_still_mean_no_letters()
{
var input = Enumerable.Repeat(" ", 10000);
var actual = ParallelLetterFrequency.Calculate(input);
var expected = new Dictionary <char, int>();
Assert.Equal(expected, actual);
}
public void No_texts_mean_no_letters()
{
var input = Enumerable.Empty <string>();
var actual = ParallelLetterFrequency.Calculate(input);
var expected = new Dictionary <char, int>();
Assert.Equal(expected, actual);
}
public void All_three_anthems_together()
{
var input = new[] { OdeAnDieFreude, Wilhelmus, StarSpangledBanner };
var actual = ParallelLetterFrequency.Calculate(input);
Assert.Equal(49, actual['a']);
Assert.Equal(56, actual['t']);
Assert.Equal(2, actual['ü']);
}
public void CalculateSlowerTest()
{
var input = Enumerable.Repeat(new[] { OdeAnDieFreude, Wilhelmus, StarSpangledBanner }, 10_000).SelectMany(t => t);
var actual = ParallelLetterFrequency.CalculateSlower(input);
Assert.Equal(490000, actual['a']);
Assert.Equal(560000, actual['t']);
Assert.Equal(20000, actual['ü']);
}
public void Case_insensitivity()
{
var input = new[] { "aA" };
var actual = ParallelLetterFrequency.Calculate(input);
var expected = new Dictionary <char, int>
{
{ 'a', 2 }
};
Assert.Equal(expected, actual);
}
public void One_letter()
{
var input = new[] { "a" };
var actual = ParallelLetterFrequency.Calculate(input);
var expected = new Dictionary <char, int>
{
{ 'a', 1 }
};
Assert.Equal(expected, actual);
}
public void One_letter()
{
var input = new[] { "a" };
var actual = ParallelLetterFrequency.Calculate(input);
var expected = new Dictionary <char, int>
{
{ 'a', 1 }
};
Assert.That(actual, Is.EquivalentTo(expected));
}
public void Many_times_the_same_text_gives_a_predictable_result()
{
var input = Enumerable.Repeat("abc", 1000);
var actual = ParallelLetterFrequency.Calculate(input);
var expected = new Dictionary <char, int>
{
{ 'a', 1000 },
{ 'b', 1000 },
{ 'c', 1000 }
};
Assert.Equal(expected, actual);
}