add symlink content fetching support

integration/fixture_image_distro_test.go

@@ -0,0 +1,35 @@
+// +build integration
+
+package integration
+
+import (
+	"testing"
+
+	"github.com/anchore/go-testutils"
+	"github.com/anchore/imgbom/imgbom"
+	"github.com/anchore/imgbom/imgbom/distro"
+	"github.com/go-test/deep"
+)
+
+func TestDistroImage(t *testing.T) {
+	img, cleanup := testutils.GetFixtureImage(t, "docker-archive", "image-distro-id")
+	defer cleanup()
+
+	actual := imgbom.IdentifyDistro(img)
+	if actual == nil {
+		t.Fatalf("could not find distro")
+	}
+
+	expected, err := distro.NewDistro(distro.Busybox, "1.31.1")
+	if err != nil {
+		t.Fatalf("could not create distro: %+v", err)
+	}
+
+	diffs := deep.Equal(*actual, expected)
+	if len(diffs) != 0 {
+		for _, d := range diffs {
+			t.Errorf("found distro difference: %+v", d)
+		}
+	}
+
+}

integration/fixture_image_language_pkgs_test.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/anchore/go-testutils"
 	"github.com/anchore/imgbom/imgbom"
+	"github.com/anchore/imgbom/imgbom/cataloger"
 	"github.com/anchore/imgbom/imgbom/pkg"
 	"github.com/anchore/imgbom/imgbom/scope"
 )
@@ -137,4 +138,9 @@ func TestLanguageImage(t *testing.T) {
 		})
 	}
 
+	// ensure that integration test cases stay in sync with the available catalogers
+	if len(cataloger.Catalogers()) < len(cases) {
+		t.Fatalf("probably missed a cataloger during testing, double check that all catalogers are included in testing")
+	}
+
 }

integration/test-fixtures/image-distro-id/Dockerfile

@@ -0,0 +1,3 @@
+FROM busybox:1.31.1
+
+