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sbom_test.go
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sbom_test.go
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//go:build integration
// +build integration
package sbom
import (
"bytes"
"context"
"encoding/json"
"flag"
"io"
"net/http"
"os"
"path"
"path/filepath"
"testing"
"chainguard.dev/melange/pkg/cli"
)
var (
updateGoldenFiles = flag.Bool("update-golden-files", false, "update golden files")
)
func TestGenerate(t *testing.T) {
const wolfiAPKRepoURL = "https://packages.wolfi.dev/os"
testArtifacts := []string{
"crane-0.19.1-r6.apk",
// Note: Syft is producing nondeterministic results for these APKs, so the tests
// aren't stable. Uncomment them when the issue is resolved.
//
// "jenkins-2.461-r0.apk",
// "jruby-9.4-9.4.7.0-r0.apk",
"openjdk-21-21.0.3-r3.apk",
"openssl-3.3.0-r8.apk",
"perl-yaml-syck-1.34-r3.apk",
"powershell-7.4.1-r0.apk",
"php-odbc-8.2.11-r1.apk",
"py3-poetry-core-1.9.0-r1.apk",
"terraform-1.5.7-r12.apk",
"thanos-0.32-0.32.5-r4.apk",
}
for _, artifact := range testArtifacts {
for _, arch := range []string{"x86_64", "aarch64"} {
artifactPath := path.Join(arch, artifact)
t.Run(artifactPath, func(t *testing.T) {
localPath := filepath.Join("testdata", "apks", artifactPath)
fi, err := os.Stat(localPath)
if err != nil && os.IsNotExist(err) || fi.Size() == 0 {
err := os.MkdirAll(filepath.Dir(localPath), 0755)
if err != nil {
t.Fatalf("creating directory for local APK file: %v", err)
}
// if the file doesn't exist, we need to fetch it
f, err := os.Create(localPath)
if err != nil {
t.Fatalf("creating local APK file: %v", err)
}
defer f.Close()
rawURL := wolfiAPKRepoURL + "/" + artifactPath
resp, err := http.Get(rawURL)
if err != nil {
t.Fatalf("fetching APK: %v", err)
}
_, err = io.Copy(f, resp.Body)
if err != nil {
t.Fatalf("writing fetched APK to local file: %v", err)
}
}
f, err := os.Open(localPath)
if err != nil {
t.Fatalf("opening local APK file for analysis: %v", err)
}
s, err := Generate(context.Background(), localPath, f, "wolfi")
if err != nil {
t.Fatalf("generating SBOM: %v", err)
}
r, err := ToSyftJSON(s)
if err != nil {
t.Fatalf("encoding SBOM to Syft JSON: %v", err)
}
goldenfilePath := filepath.Join("testdata", "goldenfiles", artifactPath+".syft.json")
if *updateGoldenFiles {
err := os.MkdirAll(filepath.Dir(goldenfilePath), 0755)
if err != nil {
t.Fatalf("creating directory for golden file: %v", err)
}
goldenfile, err := os.Create(goldenfilePath)
if err != nil {
t.Fatalf("creating golden file: %v", err)
}
defer goldenfile.Close()
generated, err := io.ReadAll(r)
if err != nil {
t.Fatalf("reading generated SBOM for golden file: %v", err)
}
formatted := formatJSON(t, generated)
_, err = goldenfile.Write(formatted)
if err != nil {
t.Fatalf("writing formatted SBOM to golden file: %v", err)
}
_, err = io.Copy(goldenfile, r)
if err != nil {
t.Fatalf("writing generated SBOM to golden file: %v", err)
}
t.Logf("updated golden file: %s", goldenfilePath)
return
}
goldenfile, err := os.Open(goldenfilePath)
if err != nil {
t.Fatalf("opening golden file: %v", err)
}
expectedBytes, err := io.ReadAll(goldenfile)
if err != nil {
t.Fatalf("reading golden file: %v", err)
}
actualBytes, err := io.ReadAll(r)
if err != nil {
t.Fatalf("reading generated SBOM: %v", err)
}
if diff := cli.Diff("expected", expectedBytes, "actual", formatJSON(t, actualBytes), false); len(diff) > 0 {
t.Errorf("unexpected SBOM generated (-want +got):\n%s", diff)
}
})
}
}
}
func formatJSON(t *testing.T, b []byte) []byte {
t.Helper()
var prettyJSON bytes.Buffer
if err := json.Indent(&prettyJSON, b, "", " "); err != nil {
t.Fatalf("failed to format JSON: %v", err)
}
return prettyJSON.Bytes()
}