// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package audit

import (
	"os"
	"path"
	"reflect"
	"testing"

	"golang.org/x/vulndb/osv"
)

// Testing utility function that simplifies vulns by projecting each vulnerability
// to Path, and Symbol fields only.
func vulnProject(vulns []*osv.Entry) map[string][]osv.Entry {
	projVulns := make(map[string][]osv.Entry)
	for _, vuln := range vulns {
		projVulns[vuln.Package.Name] = append(projVulns[vuln.Package.Name],
			osv.Entry{Package: osv.Package{Name: vuln.Package.Name}, EcosystemSpecific: osv.GoSpecific{Symbols: vuln.EcosystemSpecific.Symbols}})
	}
	return projVulns
}

func TestLoadVulnerabilities(t *testing.T) {
	cd, err := os.Getwd()
	if err != nil {
		t.Fatal(err)
	}

	vulns, err := LoadVulnerabilities([]string{"file://" + path.Join(cd, "testdata/dbs/bogus.db.org"), "file://" + path.Join(cd, "testdata/dbs/golang.deepgo.org")},
		[]string{"thirdparty.org/vulnerabilities", "bogus.org/module"})
	if err != nil {
		t.Fatal(err)
	}

	testVulnDb := make(map[string][]osv.Entry)
	testVulnDb["thirdparty.org/vulnerabilities/vuln"] = []osv.Entry{
		{Package: osv.Package{Name: "thirdparty.org/vulnerabilities/vuln"},
			EcosystemSpecific: osv.GoSpecific{Symbols: []string{"VulnData.Vuln", "VulnData.VulnOnPtr"}},
		},
		{Package: osv.Package{Name: "thirdparty.org/vulnerabilities/vuln"}},
		{Package: osv.Package{Name: "thirdparty.org/vulnerabilities/vuln"},
			EcosystemSpecific: osv.GoSpecific{Symbols: []string{"VG"}},
		},
	}
	testVulnDb["bogus.org/module/vuln"] = []osv.Entry{
		{Package: osv.Package{Name: "bogus.org/module/vuln"},
			EcosystemSpecific: osv.GoSpecific{Symbols: []string{"Bogus"}},
		},
	}

	projVulnDb := vulnProject(vulns)
	if !reflect.DeepEqual(testVulnDb, projVulnDb) {
		t.Errorf("want %v vulnerability database; got (simplified) %v", testVulnDb, projVulnDb)
	}
}