Method replace

chain.go:336–367

Like enter(), but it replaces last element of the path instead appending to it. Must be called between enter() and leave().

(name string, args ...interface{})

// Like enter(), but it replaces last element of the path instead appending to it.
// Must be called between enter() and leave().
func (c *chain) replace(name string, args ...interface{}) *chain {
	if chainValidation {
		func() {
			c.mu.Lock()
			defer c.mu.Unlock()

			if c.state != stateEntered {
				panic("replace allowed only between enter/leave")
			}
			if len(c.context.Path) == 0 {
				panic("replace allowed only if path is non-empty")
			}
			if len(c.context.AliasedPath) == 0 {
				panic("replace allowed only if aliased path is non-empty")
			}
		}()
	}

	chainCopy := c.clone()

	chainCopy.state = stateEntered
	if len(chainCopy.context.Path) != 0 {
		last := len(chainCopy.context.Path) - 1
		chainCopy.context.Path[last] = fmt.Sprintf(name, args...)
	}
	if len(chainCopy.context.AliasedPath) != 0 {
		last := len(chainCopy.context.AliasedPath) - 1
		chainCopy.context.AliasedPath[last] = fmt.Sprintf(name, args...)
	}

	return chainCopy
}

// Finalize assertion.
// Report success of failure to AssertionHandler.