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

syft/formats/common/spdxhelpers/external_refs_test.go

@@ -0,0 +1,44 @@
+package spdxhelpers
+
+import (
+	"testing"
+
+	"github.com/anchore/syft/syft/pkg"
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_ExternalRefs(t *testing.T) {
+	testCPE := pkg.MustCPE("cpe:2.3:a:name:name:3.2:*:*:*:*:*:*:*")
+	tests := []struct {
+		name     string
+		input    pkg.Package
+		expected []ExternalRef
+	}{
+		{
+			name: "cpe + purl",
+			input: pkg.Package{
+				CPEs: []pkg.CPE{
+					testCPE,
+				},
+				PURL: "a-purl",
+			},
+			expected: []ExternalRef{
+				{
+					ReferenceCategory: SecurityReferenceCategory,
+					ReferenceLocator:  pkg.CPEString(testCPE),
+					ReferenceType:     Cpe23ExternalRefType,
+				},
+				{
+					ReferenceCategory: PackageManagerReferenceCategory,
+					ReferenceLocator:  "a-purl",
+					ReferenceType:     PurlExternalRefType,
+				},
+			},
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			assert.ElementsMatch(t, test.expected, ExternalRefs(test.input))
+		})
+	}
+}