Files
syft/cmd/syft/internal/test/integration/package_deduplication_test.go
T
Alex Goodman ae1a247f3d Unpin fixture dependencies that will always float (#4495)
* unpin dependencies for package dedup case

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

* prevent make from blocking tests

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

* add check

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>

---------

Signed-off-by: Alex Goodman <wagoodman@users.noreply.github.com>
2025-12-22 19:17:58 +00:00

95 lines
2.9 KiB
Go

package integration
import (
"testing"
"github.com/stretchr/testify/assert"
"github.com/anchore/syft/syft/pkg"
"github.com/anchore/syft/syft/source"
)
func TestPackageDeduplication(t *testing.T) {
// this test verifies that package deduplication works correctly across layers.
// The test fixture installs/upgrades packages in multiple stages, creating
// duplicate RPM DB entries across layers. Without deduplication, we'd see ~600 packages.
//
// Note: we index by package name (not name-version) to be resilient to Rocky Linux
// repo updates. Location counts are summed across all versions of each package.
tests := []struct {
scope source.Scope
packageCount int
instanceCount map[string]int // how many distinct package instances (by name)
locationCount map[string]int // total locations across ALL versions of each package
}{
{
scope: source.AllLayersScope,
packageCount: 176, // without deduplication this would be ~600
instanceCount: map[string]int{
"basesystem": 1,
"wget": 1,
"curl-minimal": 2, // base + upgraded (2 different versions)
"vsftpd": 1,
"httpd": 1,
},
locationCount: map[string]int{
"basesystem": 5, // in all layers
"curl-minimal": 5, // total across both versions (2 + 3)
"wget": 4, // wget + all above layers
"vsftpd": 2, // vsftpd + all above layers
"httpd": 1, // last layer
},
},
{
scope: source.SquashedScope,
packageCount: 170,
instanceCount: map[string]int{
"basesystem": 1,
"wget": 1,
"curl-minimal": 1, // deduped to latest
"vsftpd": 1,
"httpd": 1,
},
locationCount: map[string]int{
"basesystem": 1,
"curl-minimal": 1,
"wget": 1,
"vsftpd": 1,
"httpd": 1,
},
},
}
for _, tt := range tests {
t.Run(string(tt.scope), func(t *testing.T) {
sbom, _ := catalogFixtureImage(t, "image-vertical-package-dups", tt.scope)
// verify binary packages have names
for _, p := range sbom.Artifacts.Packages.Sorted() {
if p.Type == pkg.BinaryPkg {
assert.NotEmpty(t, p.Name)
}
}
// verify exact package count
assert.Equal(t, tt.packageCount, sbom.Artifacts.Packages.PackageCount())
// verify instance count by package name
for name, expectedCount := range tt.instanceCount {
pkgs := sbom.Artifacts.Packages.PackagesByName(name)
assert.Len(t, pkgs, expectedCount, "unexpected instance count for %s", name)
}
// verify total location count across all versions of each package
for name, expectedLocCount := range tt.locationCount {
pkgs := sbom.Artifacts.Packages.PackagesByName(name)
totalLocations := 0
for _, p := range pkgs {
totalLocations += len(p.Locations.ToSlice())
}
assert.Equal(t, expectedLocCount, totalLocations, "unexpected total location count for %s", name)
}
})
}
}