open-nomad/helper/constraints/semver/constraints_test.go
Michael Schurter 796758b8a5 core: add semver constraint
The existing version constraint uses logic optimized for package
managers, not schedulers, when checking prereleases:

- 1.3.0-beta1 will *not* satisfy ">= 0.6.1"
- 1.7.0-rc1 will *not* satisfy ">= 1.6.0-beta1"

This is due to package managers wishing to favor final releases over
prereleases.

In a scheduler versions more often represent the earliest release all
required features/APIs are available in a system. Whether the constraint
or the version being evaluated are prereleases has no impact on
ordering.

This commit adds a new constraint - `semver` - which will use Semver
v2.0 ordering when evaluating constraints. Given the above examples:

- 1.3.0-beta1 satisfies ">= 0.6.1" using `semver`
- 1.7.0-rc1 satisfies ">= 1.6.0-beta1" using `semver`

Since existing jobspecs may rely on the old behavior, a new constraint
was added and the implicit Consul Connect and Vault constraints were
updated to use it.
2019-11-19 08:40:19 -08:00

126 lines
2.8 KiB
Go

package semver
import (
"testing"
"github.com/hashicorp/go-version"
)
// This file is a copy of github.com/hashicorp/go-version/constraint_test.go
// with minimal changes to demonstrate differences. Diffing the files should
// illustrate behavior differences in Constraint and version.Constraint.
func TestNewConstraint(t *testing.T) {
cases := []struct {
input string
count int
err bool
}{
{">= 1.2", 1, false},
{"1.0", 1, false},
{">= 1.x", 0, true},
{">= 1.2, < 1.0", 2, false},
// Out of bounds
{"11387778780781445675529500000000000000000", 0, true},
// Semver only
{">= 1.0beta1", 0, true},
// No pessimistic operator
{"~> 1.0", 0, true},
}
for _, tc := range cases {
v, err := NewConstraint(tc.input)
if tc.err && err == nil {
t.Fatalf("expected error for input: %s", tc.input)
} else if !tc.err && err != nil {
t.Fatalf("error for input %s: %s", tc.input, err)
}
if len(v) != tc.count {
t.Fatalf("input: %s\nexpected len: %d\nactual: %d",
tc.input, tc.count, len(v))
}
}
}
func TestConstraintCheck(t *testing.T) {
cases := []struct {
constraint string
version string
check bool
}{
{">= 1.0, < 1.2", "1.1.5", true},
{"< 1.0, < 1.2", "1.1.5", false},
{"= 1.0", "1.1.5", false},
{"= 1.0", "1.0.0", true},
{"1.0", "1.0.0", true},
// Pre-releases are ordered according to Semver v2
{"> 2.0", "2.1.0-beta", true},
{"> 2.1.0-a", "2.1.0-beta", true},
{"> 2.1.0-a", "2.1.1-beta", true},
{"> 2.0.0", "2.1.0-beta", true},
{"> 2.1.0-a", "2.1.1", true},
{"> 2.1.0-a", "2.1.1-beta", true},
{"> 2.1.0-a", "2.1.0", true},
{"<= 2.1.0-a", "2.0.0", true},
{">= 0.6.1", "1.3.0-beta1", true},
{"> 1.0-beta1", "1.0-rc1", true},
// Meta components are ignored according to Semver v2
{">= 0.6.1", "1.3.0-beta1+ent", true},
{">= 1.3.0-beta1", "1.3.0-beta1+ent", true},
{"> 1.3.0-beta1+cgo", "1.3.0-beta1+ent", false},
{"= 1.3.0-beta1+cgo", "1.3.0-beta1+ent", true},
}
for _, tc := range cases {
c, err := NewConstraint(tc.constraint)
if err != nil {
t.Fatalf("err: %s", err)
}
v, err := version.NewSemver(tc.version)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := c.Check(v)
expected := tc.check
if actual != expected {
t.Fatalf("Version: %s\nConstraint: %s\nExpected: %#v",
tc.version, tc.constraint, expected)
}
}
}
func TestConstraintsString(t *testing.T) {
cases := []struct {
constraint string
result string
}{
{">= 1.0, < 1.2", ""},
}
for _, tc := range cases {
c, err := NewConstraint(tc.constraint)
if err != nil {
t.Fatalf("err: %s", err)
}
actual := c.String()
expected := tc.result
if expected == "" {
expected = tc.constraint
}
if actual != expected {
t.Fatalf("Constraint: %s\nExpected: %#v\nActual: %s",
tc.constraint, expected, actual)
}
}
}