Incorrect number of items listed in failure message

[dahvyd]

The output of this code:

static void AssertHasHeaderWithValue(HttpResponseMessage response, string headerName, string value)
{
	Assert.That(response.Headers.TryGetValues(headerName, out var values), Is.True, "Header name: " + headerName);
	Assert.That(values, Has.Exactly(1).EqualTo("boop"));
}

Is:

  Message: 
      Expected: exactly one item equal to "boop"
      But was:  **0 items** < "no-store, no-cache" >

Seems like it should say "1 item" instead.

[manfred-brands]

The 0 is referring to the number of matches, not the total number of entries in the collection.

[dahvyd]

Hmm that isn't overly clear. Perhaps it should just list the items? Or say 0 matching items?

[OsirisTerje]

We can make the message more clear, as suggested.