test

type Case struct {
	CaseT
}

type CaseT interface {
	// Name returns the name of the running (sub-) test or benchmark.
	//
	// The name will include the name of the test along with the names of
	// any nested sub-tests. If two sibling sub-tests have the same name,
	// Name will append a suffix to guarantee the returned name is unique.
	Name() string

	// Fail marks the function as having failed but continues execution.
	Fail()

	// Failed reports whether the function has failed.
	Failed() bool

	// FailNow marks the function as having failed and stops its execution
	// by calling runtime.Goexit (which then runs all deferred calls in the
	// current goroutine).
	// Execution will continue at the next test or benchmark.
	// FailNow must be called from the goroutine running the
	// test or benchmark function, not from other goroutines
	// created during the test. Calling FailNow does not stop
	// those other goroutines.
	FailNow()

	// Log formats its arguments using default formatting, analogous to Println,
	// and records the text in the error log. For tests, the text will be printed only if
	// the test fails or the -test.v flag is set. For benchmarks, the text is always
	// printed to avoid having performance depend on the value of the -test.v flag.
	Log(args ...any)

	// Logf formats its arguments according to the format, analogous to Printf, and
	// records the text in the error log. A final newline is added if not provided. For
	// tests, the text will be printed only if the test fails or the -test.v flag is
	// set. For benchmarks, the text is always printed to avoid having performance
	// depend on the value of the -test.v flag.
	Logf(format string, args ...any)

	// Errorln is equivalent to Log followed by Fail.
	Errorln(args ...any)

	// Errorf is equivalent to Logf followed by Fail.
	Errorf(format string, args ...any)

	// Fatal is equivalent to Log followed by FailNow.
	Fatal(args ...any)

	// Fatalf is equivalent to Logf followed by FailNow.
	Fatalf(format string, args ...any)

	// Skip is equivalent to Log followed by SkipNow.
	Skip(args ...any)

	// Skipf is equivalent to Logf followed by SkipNow.
	Skipf(format string, args ...any)

	// SkipNow marks the test as having been skipped and stops its execution
	// by calling runtime.Goexit.
	// If a test fails (see Error, Errorf, Fail) and is then skipped,
	// it is still considered to have failed.
	// Execution will continue at the next test or benchmark. See also FailNow.
	// SkipNow must be called from the goroutine running the test, not from
	// other goroutines created during the test. Calling SkipNow does not stop
	// those other goroutines.
	SkipNow()

	// Skipped reports whether the test was skipped.
	Skipped() bool

	// Helper marks the calling function as a test helper function.
	// When printing file and line information, that function will be skipped.
	// Helper may be called simultaneously from multiple goroutines.
	Helper()

	// Cleanup registers a function to be called when the test (or subtest) and all its
	// subtests complete. Cleanup functions will be called in last added,
	// first called order.
	Cleanup(f func())

	// TempDir returns a temporary directory for the test to use.
	// The directory is automatically removed by Cleanup when the test and
	// all its subtests complete.
	// Each subsequent call to t.TempDir returns a unique directory;
	// if the directory creation fails, TempDir terminates the test by calling Fatal.
	TempDir() string

	// Run runs f as a subtest of t called name.
	//
	// Run may be called simultaneously from multiple goroutines, but all such calls
	// must return before the outer test function for t returns.
	Run(name string, f func()) bool

	// Deadline reports the time at which the test binary will have
	// exceeded the timeout specified by the -timeout flag.
	//
	// The ok result is false if the -timeout flag indicates “no timeout” (0).
	Deadline() (deadline time.Time, ok bool)
}

type TestingT struct {
	*testing.T
}