1
0
Fork 0
mirror of https://github.com/kubernetes-sigs/node-feature-discovery.git synced 2025-03-10 10:47:20 +00:00
node-feature-discovery/pkg/apis/nfd/v1alpha1/expression_test.go
Markus Lehtonen 63c22551df apis/nfd: fix multiple matcher terms targeting the same feature
Fix NodeFeatureRule templating in cases where multiple matchFeatures
terms are targeting the same feature. Previously, only matched feature
elements from the last matcher terms were used as the input to the
template. However, the input should contain all matched elements from
all matcher terms.

For example, consider the example rule snippet below:

  ...
  labelsTemplate: |
    {{ range .pci.device }}vendor.io/pci-device.{{ .class }}-{{ .device }}=exists
    {{ end }}
  matchFeatures:
    - feature: pci.device
      matchExpressions:
        class: {op: InRegexp, value: ["^03"]}
        vendor: {op: In, value: ["1234"]}
    - feature: pci.device
      matchExpressions:
        class: {op: InRegexp, value: ["^12"]}

This rule matches if both a pci device of class 03 from vendor 1234
exists and a pci device of class 12 (from any vendor) exists.
Previously, the template would only generate labels from the devices in
class 12 (as that's the last term). With this patch the template creates
device labels from devices in both classes 03 and 12.
2023-11-22 10:43:52 +02:00

471 lines
19 KiB
Go

/*
Copyright 2021 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package v1alpha1_test
import (
"testing"
"github.com/stretchr/testify/assert"
"sigs.k8s.io/yaml"
api "sigs.k8s.io/node-feature-discovery/pkg/apis/nfd/v1alpha1"
)
type BoolAssertionFuncf func(assert.TestingT, bool, string, ...interface{}) bool
type ValueAssertionFuncf func(assert.TestingT, interface{}, string, ...interface{}) bool
func TestCreateMatchExpression(t *testing.T) {
type V = api.MatchValue
type TC struct {
op api.MatchOp
values V
err ValueAssertionFuncf
}
tcs := []TC{
{op: api.MatchAny, err: assert.Nilf}, // #0
{op: api.MatchAny, values: V{"1"}, err: assert.NotNilf},
{op: api.MatchIn, err: assert.NotNilf},
{op: api.MatchIn, values: V{"1"}, err: assert.Nilf},
{op: api.MatchIn, values: V{"1", "2", "3", "4"}, err: assert.Nilf},
{op: api.MatchNotIn, err: assert.NotNilf},
{op: api.MatchNotIn, values: V{"1"}, err: assert.Nilf},
{op: api.MatchNotIn, values: V{"1", "2"}, err: assert.Nilf},
{op: api.MatchInRegexp, err: assert.NotNilf},
{op: api.MatchInRegexp, values: V{"1"}, err: assert.Nilf},
{op: api.MatchInRegexp, values: V{"()", "2", "3"}, err: assert.Nilf},
{op: api.MatchInRegexp, values: V{"("}, err: assert.NotNilf},
{op: api.MatchExists, err: assert.Nilf},
{op: api.MatchExists, values: V{"1"}, err: assert.NotNilf},
{op: api.MatchDoesNotExist, err: assert.Nilf},
{op: api.MatchDoesNotExist, values: V{"1"}, err: assert.NotNilf},
{op: api.MatchGt, err: assert.NotNilf},
{op: api.MatchGt, values: V{"1"}, err: assert.Nilf},
{op: api.MatchGt, values: V{"-10"}, err: assert.Nilf},
{op: api.MatchGt, values: V{"1", "2"}, err: assert.NotNilf},
{op: api.MatchGt, values: V{""}, err: assert.NotNilf},
{op: api.MatchLt, err: assert.NotNilf},
{op: api.MatchLt, values: V{"1"}, err: assert.Nilf},
{op: api.MatchLt, values: V{"-1"}, err: assert.Nilf},
{op: api.MatchLt, values: V{"1", "2", "3"}, err: assert.NotNilf},
{op: api.MatchLt, values: V{"a"}, err: assert.NotNilf},
{op: api.MatchGtLt, err: assert.NotNilf},
{op: api.MatchGtLt, values: V{"1"}, err: assert.NotNilf},
{op: api.MatchGtLt, values: V{"1", "2"}, err: assert.Nilf},
{op: api.MatchGtLt, values: V{"2", "1"}, err: assert.NotNilf},
{op: api.MatchGtLt, values: V{"1", "2", "3"}, err: assert.NotNilf},
{op: api.MatchGtLt, values: V{"a", "2"}, err: assert.NotNilf},
{op: api.MatchIsTrue, err: assert.Nilf},
{op: api.MatchIsTrue, values: V{"1"}, err: assert.NotNilf},
{op: api.MatchIsFalse, err: assert.Nilf},
{op: api.MatchIsFalse, values: V{"1", "2"}, err: assert.NotNilf},
}
for i, tc := range tcs {
_, err := api.CreateMatchExpression(tc.op, tc.values...)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
}
}
func TestMatch(t *testing.T) {
type V = api.MatchValue
type TC struct {
op api.MatchOp
values V
input interface{}
valid bool
result BoolAssertionFuncf
err ValueAssertionFuncf
}
tcs := []TC{
{op: api.MatchAny, result: assert.Truef, err: assert.Nilf},
{op: api.MatchAny, input: "2", valid: false, result: assert.Truef, err: assert.Nilf},
{op: api.MatchIn, values: V{"1"}, input: "2", valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIn, values: V{"1"}, input: "2", valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIn, values: V{"1", "2", "3"}, input: "2", valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIn, values: V{"1", "2", "3"}, input: "2", valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchNotIn, values: V{"2"}, input: 2, valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchNotIn, values: V{"1"}, input: 2, valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchNotIn, values: V{"1", "2", "3"}, input: "2", valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchNotIn, values: V{"1", "2", "3"}, input: "2", valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchInRegexp, values: V{"val-[0-9]$"}, input: "val-1", valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchInRegexp, values: V{"val-[0-9]$"}, input: "val-1", valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchInRegexp, values: V{"val-[0-9]$"}, input: "val-12", valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchInRegexp, values: V{"val-[0-9]$", "al-[1-9]"}, input: "val-12", valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchExists, input: nil, valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchExists, input: nil, valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchDoesNotExist, input: false, valid: false, result: assert.Truef, err: assert.Nilf},
{op: api.MatchDoesNotExist, input: false, valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGt, values: V{"2"}, input: 3, valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGt, values: V{"2"}, input: 2, valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGt, values: V{"2"}, input: 3, valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchGt, values: V{"-10"}, input: -3, valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchGt, values: V{"2"}, input: "3a", valid: true, result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchLt, values: V{"2"}, input: "1", valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchLt, values: V{"2"}, input: "2", valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchLt, values: V{"-10"}, input: -3, valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchLt, values: V{"2"}, input: "1", valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchLt, values: V{"2"}, input: "1.0", valid: true, result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchGtLt, values: V{"1", "10"}, input: "1", valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGtLt, values: V{"1", "10"}, input: "1", valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGtLt, values: V{"1", "10"}, input: "10", valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGtLt, values: V{"1", "10"}, input: "2", valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchGtLt, values: V{"1", "10"}, input: "1.0", valid: true, result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchIsTrue, input: true, valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIsTrue, input: true, valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchIsTrue, input: false, valid: true, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIsFalse, input: "false", valid: false, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIsFalse, input: "false", valid: true, result: assert.Truef, err: assert.Nilf},
{op: api.MatchIsFalse, input: "true", valid: true, result: assert.Falsef, err: assert.Nilf},
}
for i, tc := range tcs {
me := api.MustCreateMatchExpression(tc.op, tc.values...)
res, err := me.Match(tc.valid, tc.input)
tc.result(t, res, "test case #%d (%v) failed", i, tc)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
}
// Check some special error cases separately because MustCreateMatch panics
tcs = []TC{
{op: api.MatchGt, values: V{"3.0"}, input: 1, valid: true},
{op: api.MatchLt, values: V{"0x2"}, input: 1, valid: true},
{op: api.MatchGtLt, values: V{"1", "str"}, input: 1, valid: true},
{op: "non-existent-op", values: V{"1"}, input: 1, valid: true},
}
for i, tc := range tcs {
me := api.MatchExpression{Op: tc.op, Value: tc.values}
res, err := me.Match(tc.valid, tc.input)
assert.Falsef(t, res, "err test case #%d (%v) failed", i, tc)
assert.NotNilf(t, err, "err test case #%d (%v) failed", i, tc)
}
}
func TestMatchKeys(t *testing.T) {
type V = api.MatchValue
type I = map[string]api.Nil
type TC struct {
op api.MatchOp
values V
name string
input I
result BoolAssertionFuncf
err ValueAssertionFuncf
}
tcs := []TC{
{op: api.MatchAny, result: assert.Truef, err: assert.Nilf},
{op: api.MatchExists, name: "foo", input: nil, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchExists, name: "foo", input: I{"bar": {}}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchExists, name: "foo", input: I{"bar": {}, "foo": {}}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchDoesNotExist, name: "foo", input: nil, result: assert.Truef, err: assert.Nilf},
{op: api.MatchDoesNotExist, name: "foo", input: I{}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchDoesNotExist, name: "foo", input: I{"bar": {}}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchDoesNotExist, name: "foo", input: I{"bar": {}, "foo": {}}, result: assert.Falsef, err: assert.Nilf},
// All other ops should return an error
{op: api.MatchIn, values: V{"foo"}, name: "foo", result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchNotIn, values: V{"foo"}, name: "foo", result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchInRegexp, values: V{"foo"}, name: "foo", result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchGt, values: V{"1"}, name: "foo", result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchLt, values: V{"1"}, name: "foo", result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchGtLt, values: V{"1", "10"}, name: "foo", result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchIsTrue, name: "foo", result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchIsFalse, name: "foo", result: assert.Falsef, err: assert.NotNilf},
}
for i, tc := range tcs {
me := api.MustCreateMatchExpression(tc.op, tc.values...)
res, err := me.MatchKeys(tc.name, tc.input)
tc.result(t, res, "test case #%d (%v) failed", i, tc)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
}
}
func TestMatchValues(t *testing.T) {
type V = []string
type I = map[string]string
type TC struct {
op api.MatchOp
values V
name string
input I
result BoolAssertionFuncf
err ValueAssertionFuncf
}
tcs := []TC{
{op: api.MatchAny, result: assert.Truef, err: assert.Nilf},
{op: api.MatchIn, values: V{"1", "2"}, name: "foo", input: I{"bar": "2"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIn, values: V{"1", "2"}, name: "foo", input: I{"foo": "3"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIn, values: V{"1", "2"}, name: "foo", input: I{"foo": "2"}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchNotIn, values: V{"1", "2"}, name: "foo", input: I{"bar": "2"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchNotIn, values: V{"1", "2"}, name: "foo", input: I{"foo": "3"}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchNotIn, values: V{"1", "2"}, name: "foo", input: I{"foo": "2"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchInRegexp, values: V{"1", "2"}, name: "foo", input: I{"bar": "2"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchInRegexp, values: V{"1", "[0-8]"}, name: "foo", input: I{"foo": "9"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchInRegexp, values: V{"1", "[0-8]"}, name: "foo", input: I{"foo": "2"}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchExists, name: "foo", input: I{"bar": "1"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchExists, name: "foo", input: I{"foo": "1"}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchDoesNotExist, name: "foo", input: nil, result: assert.Truef, err: assert.Nilf},
{op: api.MatchDoesNotExist, name: "foo", input: I{"foo": "1"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGt, values: V{"2"}, name: "foo", input: I{"bar": "3"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGt, values: V{"2"}, name: "foo", input: I{"bar": "3", "foo": "2"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGt, values: V{"2"}, name: "foo", input: I{"bar": "3", "foo": "3"}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchGt, values: V{"2"}, name: "foo", input: I{"bar": "str", "foo": "str"}, result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchLt, values: V{"2"}, name: "foo", input: I{"bar": "1"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchLt, values: V{"2"}, name: "foo", input: I{"bar": "1", "foo": "2"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchLt, values: V{"2"}, name: "foo", input: I{"bar": "1", "foo": "1"}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchLt, values: V{"2"}, name: "foo", input: I{"bar": "str", "foo": "str"}, result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchGtLt, values: V{"-10", "10"}, name: "foo", input: I{"bar": "1"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGtLt, values: V{"-10", "10"}, name: "foo", input: I{"bar": "1", "foo": "11"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGtLt, values: V{"-10", "10"}, name: "foo", input: I{"bar": "1", "foo": "-11"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchGtLt, values: V{"-10", "10"}, name: "foo", input: I{"bar": "1", "foo": "1"}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchGtLt, values: V{"-10", "10"}, name: "foo", input: I{"bar": "str", "foo": "str"}, result: assert.Falsef, err: assert.NotNilf},
{op: api.MatchIsTrue, name: "foo", result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIsTrue, name: "foo", input: I{"foo": "1"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIsTrue, name: "foo", input: I{"foo": "true"}, result: assert.Truef, err: assert.Nilf},
{op: api.MatchIsFalse, name: "foo", input: I{"foo": "true"}, result: assert.Falsef, err: assert.Nilf},
{op: api.MatchIsFalse, name: "foo", input: I{"foo": "false"}, result: assert.Truef, err: assert.Nilf},
}
for i, tc := range tcs {
me := api.MustCreateMatchExpression(tc.op, tc.values...)
res, err := me.MatchValues(tc.name, tc.input)
tc.result(t, res, "test case #%d (%v) failed", i, tc)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
}
}
func TestMESMatchKeys(t *testing.T) {
type I = map[string]api.Nil
type ME = api.MatchedElement
type O = []ME
type TC struct {
mes string
input I
output O
result BoolAssertionFuncf
err ValueAssertionFuncf
}
tcs := []TC{
{output: O{}, result: assert.Truef, err: assert.Nilf},
{input: I{}, output: O{}, result: assert.Truef, err: assert.Nilf},
{input: I{"foo": {}}, output: O{}, result: assert.Truef, err: assert.Nilf},
{mes: `
foo: { op: DoesNotExist }
bar: { op: Exists }
`,
input: I{"bar": {}, "baz": {}, "buzz": {}},
output: O{ME{"Name": "bar"}, ME{"Name": "foo"}},
result: assert.Truef, err: assert.Nilf},
{mes: `
foo: { op: DoesNotExist }
bar: { op: Exists }
`,
input: I{"foo": {}, "bar": {}, "baz": {}},
output: nil,
result: assert.Falsef, err: assert.Nilf},
{mes: `
foo: { op: In, value: ["bar"] }
bar: { op: Exists }
`,
input: I{"bar": {}, "baz": {}},
output: nil,
result: assert.Falsef, err: assert.NotNilf},
}
for i, tc := range tcs {
mes := &api.MatchExpressionSet{}
if err := yaml.Unmarshal([]byte(tc.mes), mes); err != nil {
t.Fatalf("failed to parse data of test case #%d (%v): %v", i, tc, err)
}
res, out, err := mes.MatchGetKeys(tc.input)
tc.result(t, res, "test case #%d (%v) failed", i, tc)
assert.Equalf(t, tc.output, out, "test case #%d (%v) failed", i, tc)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
res, err = mes.MatchKeys(tc.input)
tc.result(t, res, "test case #%d (%v) failed", i, tc)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
}
}
func TestMESMatchValues(t *testing.T) {
type I = map[string]string
type ME = api.MatchedElement
type O = []ME
type TC struct {
mes string
input I
output O
result BoolAssertionFuncf
err ValueAssertionFuncf
}
tcs := []TC{
{output: O{}, result: assert.Truef, err: assert.Nilf},
{input: I{}, output: O{}, result: assert.Truef, err: assert.Nilf},
{input: I{"foo": "bar"}, output: O{}, result: assert.Truef, err: assert.Nilf},
{mes: `
foo: { op: Exists }
bar: { op: In, value: ["val", "wal"] }
baz: { op: Gt, value: ["10"] }
`,
input: I{"bar": "val"},
result: assert.Falsef, err: assert.Nilf},
{mes: `
foo: { op: Exists }
bar: { op: In, value: ["val", "wal"] }
baz: { op: Gt, value: ["10"] }
`,
input: I{"foo": "1", "bar": "val", "baz": "123", "buzz": "light"},
output: O{ME{"Name": "bar", "Value": "val"}, ME{"Name": "baz", "Value": "123"}, ME{"Name": "foo", "Value": "1"}},
result: assert.Truef, err: assert.Nilf},
{mes: `
foo: { op: Exists }
bar: { op: In, value: ["val"] }
baz: { op: Gt, value: ["10"] }
`,
input: I{"foo": "1", "bar": "val", "baz": "123.0"},
result: assert.Falsef, err: assert.NotNilf},
}
for i, tc := range tcs {
mes := &api.MatchExpressionSet{}
if err := yaml.Unmarshal([]byte(tc.mes), mes); err != nil {
t.Fatalf("failed to parse data of test case #%d (%v): %v", i, tc, err)
}
res, out, err := mes.MatchGetValues(tc.input)
tc.result(t, res, "test case #%d (%v) failed", i, tc)
assert.Equalf(t, tc.output, out, "test case #%d (%v) failed", i, tc)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
res, err = mes.MatchValues(tc.input)
tc.result(t, res, "test case #%d (%v) failed", i, tc)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
}
}
func TestMESMatchInstances(t *testing.T) {
type I = api.InstanceFeature
type ME = api.MatchedElement
type O = []ME
type A = map[string]string
type TC struct {
mes string
input []I
output O
result BoolAssertionFuncf
err ValueAssertionFuncf
}
tcs := []TC{
{output: O{}, result: assert.Falsef, err: assert.Nilf}, // nil instances -> false
{input: []I{}, output: O{}, result: assert.Falsef, err: assert.Nilf}, // zero instances -> false
{input: []I{I{Attributes: A{}}}, output: O{A{}}, result: assert.Truef, err: assert.Nilf}, // one "empty" instance
{mes: `
foo: { op: Exists }
bar: { op: Lt, value: ["10"] }
`,
input: []I{I{Attributes: A{"foo": "1"}}, I{Attributes: A{"bar": "1"}}},
output: O{},
result: assert.Falsef, err: assert.Nilf},
{mes: `
foo: { op: Exists }
bar: { op: Lt, value: ["10"] }
`,
input: []I{I{Attributes: A{"foo": "1"}}, I{Attributes: A{"foo": "2", "bar": "1"}}},
output: O{A{"foo": "2", "bar": "1"}},
result: assert.Truef, err: assert.Nilf},
{mes: `
bar: { op: Lt, value: ["10"] }
`,
input: []I{I{Attributes: A{"foo": "1"}}, I{Attributes: A{"bar": "0x1"}}},
result: assert.Falsef, err: assert.NotNilf},
}
for i, tc := range tcs {
mes := &api.MatchExpressionSet{}
if err := yaml.Unmarshal([]byte(tc.mes), mes); err != nil {
t.Fatalf("failed to parse data of test case #%d (%v): %v", i, tc, err)
}
out, err := mes.MatchGetInstances(tc.input)
assert.Equalf(t, tc.output, out, "test case #%d (%v) failed", i, tc)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
res, err := mes.MatchInstances(tc.input)
tc.result(t, res, "test case #%d (%v) failed", i, tc)
tc.err(t, err, "test case #%d (%v) failed", i, tc)
}
}