refactor: move formats from internal into syft module (#1172)

syft/formats/syftjson/decoder_test.go

@@ -0,0 +1,50 @@
+package syftjson
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+
+	"github.com/anchore/syft/syft/formats/common/testutils"
+	"github.com/go-test/deep"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestEncodeDecodeCycle(t *testing.T) {
+	testImage := "image-simple"
+	originalSBOM := testutils.ImageInput(t, testImage)
+
+	var buf bytes.Buffer
+	assert.NoError(t, encoder(&buf, originalSBOM))
+
+	actualSBOM, err := decoder(bytes.NewReader(buf.Bytes()))
+	assert.NoError(t, err)
+
+	for _, d := range deep.Equal(originalSBOM.Source, actualSBOM.Source) {
+		if strings.HasSuffix(d, "<nil slice> != []") {
+			// semantically the same
+			continue
+		}
+		t.Errorf("metadata difference: %+v", d)
+	}
+
+	actualPackages := actualSBOM.Artifacts.PackageCatalog.Sorted()
+	for idx, p := range originalSBOM.Artifacts.PackageCatalog.Sorted() {
+		if !assert.Equal(t, p.Name, actualPackages[idx].Name) {
+			t.Errorf("different package at idx=%d: %s vs %s", idx, p.Name, actualPackages[idx].Name)
+			continue
+		}
+
+		for _, d := range deep.Equal(p, actualPackages[idx]) {
+			if strings.Contains(d, ".VirtualPath: ") {
+				// location.Virtual path is not exposed in the json output
+				continue
+			}
+			if strings.HasSuffix(d, "<nil slice> != []") {
+				// semantically the same
+				continue
+			}
+			t.Errorf("package difference (%s): %+v", p.Name, d)
+		}
+	}
+}