util_test.go

// Copyright 2022 Harald Albrecht.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.

//go:build linux

package fdooze

import (
	"github.com/thediveo/fdooze/filedesc"

	. "github.com/onsi/ginkgo/v2"
	. "github.com/onsi/gomega"
)

var _ = Describe("util", func() {

	It("checks an actual to be a slice of file descriptors", func() {
		Expect(toFds(nil, "Foo")).Error().To(MatchError(MatchRegexp(
			`Foo matcher expects an array or slice of file descriptors.  Got:\n\s+<nil>: nil`)))
		Expect(toFds([]int{42}, "Foo")).Error().To(MatchError(MatchRegexp(
			`Foo matcher expects an array or slice of file descriptors.  Got:\n\s+<\[\]int | len:1, cap:1>: \[42\]`)))
	})

	It("sorts oozing fds", func() {
		n := func(fd int, link string) FileDescriptor {
			fdesc, err := filedesc.NewPathFd(fd, "/proc/self/fd", link)
			Expect(err).WithOffset(1).NotTo(HaveOccurred())
			return fdesc
		}
		fds := []FileDescriptor{
			n(1, "/bar1/baz"),
			n(0, "/foo0/bar"),
		}
		Expect(dumpFds(fds, 0)).To(MatchRegexp(
			`(?m)^fd 0, flags 0x.* \(.*\)\n\s+path: "/foo0/bar"\nfd 1, flags 0x.* \(.*\)\n\s+path: "/bar1/baz"$`))
	})

})