package main_test

import (
	"strings"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

// TestDockerfileBoundsEveryModuleDownload fails unless every
// `go mod download` in the Dockerfile runs under a time limit, is tried
// a fixed number of times, and then fails the build with a message that
// names the module download (issue #351). Like the version tests, this
// parses the Dockerfile; that a stalled download really is cut off and
// retried was checked by hand.
func TestDockerfileBoundsEveryModuleDownload(t *testing.T) {
	t.Parallel()

	var downloads []string

	for _, instruction := range instructions(t, productDockerfile) {
		if strings.Contains(instruction, "go mod download") {
			downloads = append(downloads, instruction)
		}
	}

	require.NotEmpty(t, downloads, "%s must download modules",
		productDockerfile)

	for _, download := range downloads {
		assert.Contains(t, download, "timeout 300 go mod download",
			"%s: a module download must have a time limit: %s",
			productDockerfile, download)
		assert.Contains(t, download, "for attempt in 1 2 3",
			"%s: a module download must be retried: %s",
			productDockerfile, download)
		assert.Contains(t, download, "module download failed",
			"%s: a module download that never succeeds must say so: %s",
			productDockerfile, download)
		assert.True(t, strings.HasSuffix(download, "exit 1"),
			"%s: a module download that never succeeds must fail the"+
				" build: %s", productDockerfile, download)
	}
}