os.Setenv("NO_PROXY", tt.noenv)
			os.Setenv("REQUEST_METHOD", tt.reqmeth)
			ResetCachedEnvironment()
			return ProxyFromEnvironment(req)
		})
	}
}

func TestProxyFromEnvironmentLowerCase(t *testing.T) {
	ResetProxyEnv()
	defer ResetProxyEnv()
	for _, tt := range proxyFromEnvTests {
		testProxyForRequest(t, tt, func(req *Request) (*url.URL, error) {
			os.Setenv("http_proxy", tt.env)