cointains_checker.go

package main

import (
  "launchpad.net/gocheck"
)

type containsChecker struct {
	*gocheck.CheckerInfo
}

var Contains gocheck.Checker = &containsChecker{
	&gocheck.CheckerInfo{Name: "Contains", Params: []string{"obtained", "expected"}},
}

func (checker *containsChecker) Check(params []interface{}, name []string) (result bool, err string) {
	slice, ok := params[0].([]string)
	if !ok {
		return false, "obtained value must be a []string"
	}
	expected, ok := params[1].(string)
	if !ok {
		return false, "expected value must be a string"
	}
	for _, value := range slice {
		if value == expected {
			return true, ""
		}
	}

	return false, "expected string not found in obtained array"
}