Indexer Verification

Setter verification

Example

service[1] = 10;
service[2] = 20;

imposter[Arg<int>.Any()].Setter().Called(Count.AtLeast(2));
imposter[Arg<int>.Is(2)].Setter().Called(Count.Once());

Getter verification

Example

var _ = service[1];
imposter[Arg<int>.Any()].Getter().Called(Count.Once());

Failures

When verification fails, VerificationFailedException is thrown with the message:

Example

Invocation was expected to be performed {expectedCount} but instead was performed {actualCount} times.

Examples:

Example

// Setter expected once for index 2, but no matching write occurred
imposter[Arg<int>.Is(2)].Setter().Called(Count.Once());
// throws: "Invocation was expected to be performed exactly 1 time(s) but instead was performed 0 times."

// Getter expected at least 2 reads, but only 1
var _ = service[1];
imposter[Arg<int>.Any()].Getter().Called(Count.AtLeast(2));
// throws: "Invocation was expected to be performed at least 2 time(s) but instead was performed 1 times."