consul/envoyextensions/xdscommon/proxysupport_test.go

85 lines
2.6 KiB
Go

// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1
package xdscommon
import (
"slices"
"sort"
"testing"
"github.com/hashicorp/go-version"
"github.com/stretchr/testify/assert"
)
// TestProxySupportOrder tests that the values in EnvoyVersions are valid (X.Y.Z), contiguous by "major" (X.Y) version,
// and sorted in descending order.
func TestProxySupportOrder(t *testing.T) {
versions := make([]*version.Version, len(EnvoyVersions))
beforeSort := make([]*version.Version, len(EnvoyVersions))
for i, raw := range EnvoyVersions {
v, _ := version.NewVersion(raw)
if v.Segments()[0] != 1 {
// If this fails, we need to add support for a new semver-major (x in x.y.z) version of Envoy
t.Fatalf("Expected major version to be 1, got: %v", v.Segments()[0])
}
versions[i] = v
beforeSort[i] = v
}
// After this, the versions are properly sorted
// go-version has a collection container, but it only allows for sorting in ascending order
sort.Slice(versions, func(i, j int) bool {
return versions[j].LessThan(versions[i])
})
// Check that we already have a sorted list
for i := range EnvoyVersions {
assert.True(t, versions[i].Equal(beforeSort[i]))
}
// Check that we have a continues set of versions
for i := 1; i < len(versions); i++ {
previousMajorVersion := getMajorVersion(versions[i-1])
majorVersion := getMajorVersion(versions[i])
assert.True(t, majorVersion == previousMajorVersion-1,
"Expected Envoy major version following %d.%d to be %d.%d, got %d.%d",
versions[i-1].Segments()[0],
previousMajorVersion,
versions[i-1].Segments()[0],
previousMajorVersion-1,
versions[i].Segments()[0],
majorVersion)
}
}
func TestParseEnvoyVersions(t *testing.T) {
// Test with valid versions, comments, and blank lines
raw := "# Comment\n1.29.4\n\n# More\n# comments\n1.28.3\n\n1.27.5\n1.26.8\n\n"
expected := []string{"1.29.4", "1.28.3", "1.27.5", "1.26.8"}
versions, err := parseEnvoyVersions(raw)
assert.NoError(t, err)
if !slices.Equal(versions, expected) {
t.Fatalf("Expected %v, got: %v", expected, versions)
}
// Test with invalid version
raw = "1.29.4\n1.26.8\nfoo"
_, err = parseEnvoyVersions(raw)
assert.EqualError(t, err, "invalid version in ENVOY_VERSIONS: foo")
// Test with out-of-order values
raw = "1.29.4\n1.26.8\n1.27.5"
_, err = parseEnvoyVersions(raw)
assert.EqualError(t, err, "ENVOY_VERSIONS must be sorted in descending order")
}
// getMajorVersion returns the "major" (Y in X.Y.Z) version of the given Envoy version.
func getMajorVersion(version *version.Version) int {
return version.Segments()[1]
}