Skip to main content

Multiple expectations

You can combine multiple expectations in different ways:

On the same property​

Simply use .And or .Or to combine multiple expectations, e.g.

string subject = "something different";
await Expect.That(subject).StartsWith("some").And.EndsWith("text");
Expected subject to
start with "some" and end with "text",
but it was "something different"

On different properties of the same subject​

Use the For-syntax to access different properties of a common subject and combine them again with .And or .Or, e.g.

  public record MyClass(int Status, string Content);
  MyClass subject = new(1, "some other content");
  
  await Expect.That(subject)
    .For(x => x.Status, x => x.IsGreaterThan(1)).And
    .For(x => x.Content, x => x.Is("some content"));
Expected subject to
for .Status be greater than 1 and for .Content be equal to "some content",
but .Status was 1 and .Content was "some other content" which differs at index 5:
        ↓ (actual)
  "some other content"
  "some content"
        ↑ (expected)

On different subjects​

Use the Expect.ThatAll or Expect.ThatAny syntax to combine arbitrary expectations, e.g.

  string subjectA = "ABC";
  string subjectB = "XYZ";
  
  await Expect.ThatAll(
    Expect.That(subjectA).Is("ABC"),
    Expect.That(subjectB).Is("DEF"));
Expected all of the following to succeed:
 [01] Expected subjectA to be equal to "ABC"
 [02] Expected subjectB to be equal to "DEF"
but
 [02] it was "XYZ" which differs at index 0:
         ↓ (actual)
        "XYZ"
        "DEF"
         ↑ (expected)