testutil

type Case[T1 any, T2 any, T3 any] struct {
	// Scenario describes feature of the test case.
	// E.g. "Query hot block with label filters".
	Scenario string

	// Given is initial "context"!!!(context != parameters of method)
	// at the beginning of the scenario, in one or more clauses.
	// E.g. "a hot block with indexed feeds".
	Given string
	// When is the event that triggers the scenario.
	// E.g. "querying with label filters".
	When string
	// Then is the expected outcome, in one or more clauses.
	// E.g. "should return matching feeds".
	Then string

	// GivenDetail is the detail of the given context.
	// Generally speaking, it describes what "state the object" of the module should have.
	// E.g. 'hot block', what does it look like, what are its member variable values?
	// What is the expected behavior of external dependencies?
	GivenDetail T1
	// WhenDetail is the detail of the when event.
	// Generally speaking, it describes the "parameters of the method call".
	// E.g. what does the query options look like.
	WhenDetail T2
	// ThenExpected is the expected outcome of the scenario.
	// Generally speaking, it describes the "return value of the method call".
	// E.g. what does the returned feeds look like.
	ThenExpected T3
}