chore: update ffmpeg tests (#4249)

Signed-off-by: Keith Zantow <kzantow@gmail.com>

syft/pkg/cataloger/binary/classifier_cataloger_test.go

@@ -1399,7 +1399,7 @@ func Test_Cataloger_PositiveCases(t *testing.T) {
 				Version:   "5.1.4",
 				Type:      "binary",
 				PURL:      "pkg:generic/ffmpeg@5.1.4",
-				Locations: locations("libavcodec"),
+				Locations: locations("libavcodec-9aae324f.so.59.37.100"),
 				Metadata:  metadata("ffmpeg-library"),
 			},
 		},

syft/pkg/cataloger/binary/test-fixtures/config.yaml

@@ -838,7 +838,4 @@ from-images:
         platform: linux/amd64
     paths:
       - /usr/local/lib/python3.11/site-packages/opencv_contrib_python.libs/libavcodec-9aae324f.so.59.37.100
-      - /usr/local/lib/python3.11/site-packages/opencv_contrib_python.libs/libavformat-3ff1be5b.so.59.27.100
-      - /usr/local/lib/python3.11/site-packages/opencv_contrib_python.libs/libavutil-a0a0531e.so.57.28.100
-      - /usr/local/lib/python3.11/site-packages/opencv_contrib_python.libs/libswresample-2ec4394e.so.4.7.100
 

syft/pkg/cataloger/binary/test-fixtures/manager/internal/list_entries.go

@@ -2,11 +2,15 @@ package internal
 
 import (
 	"fmt"
+	"iter"
 	"os"
 	"path/filepath"
+	"slices"
 	"sort"
 	"strings"
 
+	"golang.org/x/exp/maps"
+
 	"github.com/anchore/syft/syft/pkg/cataloger/binary/test-fixtures/manager/internal/config"
 )
 
@@ -195,3 +199,17 @@ func (e Entries) BinaryFromImageHasSnippet(cfg config.BinaryFromImage) bool {
 	}
 	return true
 }
+
+func (e Entries) Sorted() iter.Seq2[LogicalEntryKey, EntryInfo] {
+	keys := maps.Keys(e)
+	slices.SortFunc(keys, func(a, b LogicalEntryKey) int {
+		return strings.Compare(a.Path(), b.Path())
+	})
+	return func(yield func(LogicalEntryKey, EntryInfo) bool) {
+		for _, k := range keys {
+			if !yield(k, e[k]) {
+				return
+			}
+		}
+	}
+}

syft/pkg/cataloger/binary/test-fixtures/manager/testutil/snippet_or_binary.go

@@ -42,7 +42,7 @@ func SnippetOrBinary(t *testing.T, path string, requireBinary bool) string {
 	require.NoError(t, err)
 
 	var fixturePath string
-	for k, v := range entries {
+	for k, v := range entries.Sorted() {
 		if filepath.Dir(k.Path()) == path {
 			// prefer the snippet over the binary
 			if !requireBinary {