575 lines
19 KiB
Go
575 lines
19 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package labels
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import (
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"reflect"
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"strings"
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"testing"
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"k8s.io/kubernetes/pkg/selection"
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"k8s.io/kubernetes/pkg/util/sets"
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)
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func TestSelectorParse(t *testing.T) {
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testGoodStrings := []string{
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"x=a,y=b,z=c",
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"",
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"x!=a,y=b",
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"x=",
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"x= ",
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"x=,z= ",
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"x= ,z= ",
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"!x",
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"x>1",
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"x>1,z<5",
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}
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testBadStrings := []string{
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"x=a||y=b",
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"x==a==b",
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"!x=a",
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"x<a",
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}
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for _, test := range testGoodStrings {
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lq, err := Parse(test)
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if err != nil {
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t.Errorf("%v: error %v (%#v)\n", test, err, err)
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}
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if strings.Replace(test, " ", "", -1) != lq.String() {
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t.Errorf("%v restring gave: %v\n", test, lq.String())
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}
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}
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for _, test := range testBadStrings {
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_, err := Parse(test)
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if err == nil {
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t.Errorf("%v: did not get expected error\n", test)
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}
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}
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}
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func TestDeterministicParse(t *testing.T) {
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s1, err := Parse("x=a,a=x")
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s2, err2 := Parse("a=x,x=a")
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if err != nil || err2 != nil {
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t.Errorf("Unexpected parse error")
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}
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if s1.String() != s2.String() {
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t.Errorf("Non-deterministic parse")
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}
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}
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func expectMatch(t *testing.T, selector string, ls Set) {
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lq, err := Parse(selector)
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if err != nil {
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t.Errorf("Unable to parse %v as a selector\n", selector)
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return
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}
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if !lq.Matches(ls) {
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t.Errorf("Wanted %s to match '%s', but it did not.\n", selector, ls)
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}
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}
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func expectNoMatch(t *testing.T, selector string, ls Set) {
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lq, err := Parse(selector)
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if err != nil {
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t.Errorf("Unable to parse %v as a selector\n", selector)
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return
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}
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if lq.Matches(ls) {
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t.Errorf("Wanted '%s' to not match '%s', but it did.", selector, ls)
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}
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}
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func TestEverything(t *testing.T) {
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if !Everything().Matches(Set{"x": "y"}) {
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t.Errorf("Nil selector didn't match")
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}
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if !Everything().Empty() {
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t.Errorf("Everything was not empty")
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}
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}
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func TestSelectorMatches(t *testing.T) {
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expectMatch(t, "", Set{"x": "y"})
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expectMatch(t, "x=y", Set{"x": "y"})
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expectMatch(t, "x=y,z=w", Set{"x": "y", "z": "w"})
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expectMatch(t, "x!=y,z!=w", Set{"x": "z", "z": "a"})
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expectMatch(t, "notin=in", Set{"notin": "in"}) // in and notin in exactMatch
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expectMatch(t, "x", Set{"x": "z"})
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expectMatch(t, "!x", Set{"y": "z"})
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expectMatch(t, "x>1", Set{"x": "2"})
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expectMatch(t, "x<1", Set{"x": "0"})
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expectNoMatch(t, "x=z", Set{})
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expectNoMatch(t, "x=y", Set{"x": "z"})
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expectNoMatch(t, "x=y,z=w", Set{"x": "w", "z": "w"})
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expectNoMatch(t, "x!=y,z!=w", Set{"x": "z", "z": "w"})
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expectNoMatch(t, "x", Set{"y": "z"})
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expectNoMatch(t, "!x", Set{"x": "z"})
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expectNoMatch(t, "x>1", Set{"x": "0"})
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expectNoMatch(t, "x<1", Set{"x": "2"})
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labelset := Set{
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"foo": "bar",
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"baz": "blah",
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}
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expectMatch(t, "foo=bar", labelset)
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expectMatch(t, "baz=blah", labelset)
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expectMatch(t, "foo=bar,baz=blah", labelset)
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expectNoMatch(t, "foo=blah", labelset)
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expectNoMatch(t, "baz=bar", labelset)
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expectNoMatch(t, "foo=bar,foobar=bar,baz=blah", labelset)
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}
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func expectMatchDirect(t *testing.T, selector, ls Set) {
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if !SelectorFromSet(selector).Matches(ls) {
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t.Errorf("Wanted %s to match '%s', but it did not.\n", selector, ls)
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}
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}
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func expectNoMatchDirect(t *testing.T, selector, ls Set) {
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if SelectorFromSet(selector).Matches(ls) {
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t.Errorf("Wanted '%s' to not match '%s', but it did.", selector, ls)
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}
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}
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func TestSetMatches(t *testing.T) {
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labelset := Set{
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"foo": "bar",
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"baz": "blah",
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}
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expectMatchDirect(t, Set{}, labelset)
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expectMatchDirect(t, Set{"foo": "bar"}, labelset)
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expectMatchDirect(t, Set{"baz": "blah"}, labelset)
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expectMatchDirect(t, Set{"foo": "bar", "baz": "blah"}, labelset)
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//TODO: bad values not handled for the moment in SelectorFromSet
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//expectNoMatchDirect(t, Set{"foo": "=blah"}, labelset)
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//expectNoMatchDirect(t, Set{"baz": "=bar"}, labelset)
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//expectNoMatchDirect(t, Set{"foo": "=bar", "foobar": "bar", "baz": "blah"}, labelset)
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}
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func TestNilMapIsValid(t *testing.T) {
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selector := Set(nil).AsSelector()
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if selector == nil {
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t.Errorf("Selector for nil set should be Everything")
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}
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if !selector.Empty() {
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t.Errorf("Selector for nil set should be Empty")
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}
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}
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func TestSetIsEmpty(t *testing.T) {
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if !(Set{}).AsSelector().Empty() {
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t.Errorf("Empty set should be empty")
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}
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if !(NewSelector()).Empty() {
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t.Errorf("Nil Selector should be empty")
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}
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}
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func TestLexer(t *testing.T) {
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testcases := []struct {
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s string
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t Token
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}{
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{"", EndOfStringToken},
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{",", CommaToken},
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{"notin", NotInToken},
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{"in", InToken},
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{"=", EqualsToken},
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{"==", DoubleEqualsToken},
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{">", GreaterThanToken},
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{"<", LessThanToken},
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//Note that Lex returns the longest valid token found
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{"!", DoesNotExistToken},
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{"!=", NotEqualsToken},
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{"(", OpenParToken},
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{")", ClosedParToken},
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//Non-"special" characters are considered part of an identifier
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{"~", IdentifierToken},
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{"||", IdentifierToken},
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}
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for _, v := range testcases {
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l := &Lexer{s: v.s, pos: 0}
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token, lit := l.Lex()
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if token != v.t {
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t.Errorf("Got %d it should be %d for '%s'", token, v.t, v.s)
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}
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if v.t != ErrorToken && lit != v.s {
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t.Errorf("Got '%s' it should be '%s'", lit, v.s)
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}
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}
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}
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func min(l, r int) (m int) {
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m = r
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if l < r {
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m = l
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}
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return m
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}
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func TestLexerSequence(t *testing.T) {
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testcases := []struct {
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s string
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t []Token
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}{
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{"key in ( value )", []Token{IdentifierToken, InToken, OpenParToken, IdentifierToken, ClosedParToken}},
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{"key notin ( value )", []Token{IdentifierToken, NotInToken, OpenParToken, IdentifierToken, ClosedParToken}},
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{"key in ( value1, value2 )", []Token{IdentifierToken, InToken, OpenParToken, IdentifierToken, CommaToken, IdentifierToken, ClosedParToken}},
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{"key", []Token{IdentifierToken}},
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{"!key", []Token{DoesNotExistToken, IdentifierToken}},
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{"()", []Token{OpenParToken, ClosedParToken}},
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{"x in (),y", []Token{IdentifierToken, InToken, OpenParToken, ClosedParToken, CommaToken, IdentifierToken}},
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{"== != (), = notin", []Token{DoubleEqualsToken, NotEqualsToken, OpenParToken, ClosedParToken, CommaToken, EqualsToken, NotInToken}},
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{"key>2", []Token{IdentifierToken, GreaterThanToken, IdentifierToken}},
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{"key<1", []Token{IdentifierToken, LessThanToken, IdentifierToken}},
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}
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for _, v := range testcases {
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var literals []string
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var tokens []Token
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l := &Lexer{s: v.s, pos: 0}
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for {
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token, lit := l.Lex()
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if token == EndOfStringToken {
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break
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}
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tokens = append(tokens, token)
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literals = append(literals, lit)
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}
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if len(tokens) != len(v.t) {
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t.Errorf("Bad number of tokens for '%s %d, %d", v.s, len(tokens), len(v.t))
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}
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for i := 0; i < min(len(tokens), len(v.t)); i++ {
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if tokens[i] != v.t[i] {
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t.Errorf("Test '%s': Mismatching in token type found '%v' it should be '%v'", v.s, tokens[i], v.t[i])
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}
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}
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}
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}
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func TestParserLookahead(t *testing.T) {
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testcases := []struct {
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s string
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t []Token
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}{
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{"key in ( value )", []Token{IdentifierToken, InToken, OpenParToken, IdentifierToken, ClosedParToken, EndOfStringToken}},
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{"key notin ( value )", []Token{IdentifierToken, NotInToken, OpenParToken, IdentifierToken, ClosedParToken, EndOfStringToken}},
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{"key in ( value1, value2 )", []Token{IdentifierToken, InToken, OpenParToken, IdentifierToken, CommaToken, IdentifierToken, ClosedParToken, EndOfStringToken}},
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{"key", []Token{IdentifierToken, EndOfStringToken}},
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{"!key", []Token{DoesNotExistToken, IdentifierToken, EndOfStringToken}},
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{"()", []Token{OpenParToken, ClosedParToken, EndOfStringToken}},
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{"", []Token{EndOfStringToken}},
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{"x in (),y", []Token{IdentifierToken, InToken, OpenParToken, ClosedParToken, CommaToken, IdentifierToken, EndOfStringToken}},
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{"== != (), = notin", []Token{DoubleEqualsToken, NotEqualsToken, OpenParToken, ClosedParToken, CommaToken, EqualsToken, NotInToken, EndOfStringToken}},
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{"key>2", []Token{IdentifierToken, GreaterThanToken, IdentifierToken, EndOfStringToken}},
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{"key<1", []Token{IdentifierToken, LessThanToken, IdentifierToken, EndOfStringToken}},
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}
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for _, v := range testcases {
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p := &Parser{l: &Lexer{s: v.s, pos: 0}, position: 0}
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p.scan()
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if len(p.scannedItems) != len(v.t) {
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t.Errorf("Expected %d items found %d", len(v.t), len(p.scannedItems))
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}
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for {
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token, lit := p.lookahead(KeyAndOperator)
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token2, lit2 := p.consume(KeyAndOperator)
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if token == EndOfStringToken {
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break
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}
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if token != token2 || lit != lit2 {
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t.Errorf("Bad values")
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}
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}
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}
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}
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func TestRequirementConstructor(t *testing.T) {
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requirementConstructorTests := []struct {
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Key string
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Op selection.Operator
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Vals sets.String
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Success bool
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}{
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{"x", selection.In, nil, false},
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{"x", selection.NotIn, sets.NewString(), false},
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{"x", selection.In, sets.NewString("foo"), true},
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{"x", selection.NotIn, sets.NewString("foo"), true},
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{"x", selection.Exists, nil, true},
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{"x", selection.DoesNotExist, nil, true},
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{"1foo", selection.In, sets.NewString("bar"), true},
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{"1234", selection.In, sets.NewString("bar"), true},
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{"y", selection.GreaterThan, sets.NewString("1"), true},
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{"z", selection.LessThan, sets.NewString("6"), true},
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{"foo", selection.GreaterThan, sets.NewString("bar"), false},
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{"barz", selection.LessThan, sets.NewString("blah"), false},
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{strings.Repeat("a", 254), selection.Exists, nil, false}, //breaks DNS rule that len(key) <= 253
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}
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for _, rc := range requirementConstructorTests {
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if _, err := NewRequirement(rc.Key, rc.Op, rc.Vals.List()); err == nil && !rc.Success {
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t.Errorf("expected error with key:%#v op:%v vals:%v, got no error", rc.Key, rc.Op, rc.Vals)
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} else if err != nil && rc.Success {
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t.Errorf("expected no error with key:%#v op:%v vals:%v, got:%v", rc.Key, rc.Op, rc.Vals, err)
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}
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}
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}
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func TestToString(t *testing.T) {
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var req Requirement
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toStringTests := []struct {
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In *internalSelector
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Out string
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Valid bool
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}{
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{&internalSelector{
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getRequirement("x", selection.In, sets.NewString("abc", "def"), t),
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getRequirement("y", selection.NotIn, sets.NewString("jkl"), t),
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getRequirement("z", selection.Exists, nil, t)},
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"x in (abc,def),y notin (jkl),z", true},
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{&internalSelector{
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getRequirement("x", selection.NotIn, sets.NewString("abc", "def"), t),
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getRequirement("y", selection.NotEquals, sets.NewString("jkl"), t),
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getRequirement("z", selection.DoesNotExist, nil, t)},
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"x notin (abc,def),y!=jkl,!z", true},
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{&internalSelector{
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getRequirement("x", selection.In, sets.NewString("abc", "def"), t),
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req}, // adding empty req for the trailing ','
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"x in (abc,def),", false},
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{&internalSelector{
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getRequirement("x", selection.NotIn, sets.NewString("abc"), t),
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getRequirement("y", selection.In, sets.NewString("jkl", "mno"), t),
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getRequirement("z", selection.NotIn, sets.NewString(""), t)},
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"x notin (abc),y in (jkl,mno),z notin ()", true},
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{&internalSelector{
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getRequirement("x", selection.Equals, sets.NewString("abc"), t),
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getRequirement("y", selection.DoubleEquals, sets.NewString("jkl"), t),
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getRequirement("z", selection.NotEquals, sets.NewString("a"), t),
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getRequirement("z", selection.Exists, nil, t)},
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"x=abc,y==jkl,z!=a,z", true},
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{&internalSelector{
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getRequirement("x", selection.GreaterThan, sets.NewString("2"), t),
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getRequirement("y", selection.LessThan, sets.NewString("8"), t),
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getRequirement("z", selection.Exists, nil, t)},
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"x>2,y<8,z", true},
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}
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for _, ts := range toStringTests {
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if out := ts.In.String(); out == "" && ts.Valid {
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t.Errorf("%#v.String() => '%v' expected no error", ts.In, out)
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} else if out != ts.Out {
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t.Errorf("%#v.String() => '%v' want '%v'", ts.In, out, ts.Out)
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}
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}
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}
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func TestRequirementSelectorMatching(t *testing.T) {
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var req Requirement
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labelSelectorMatchingTests := []struct {
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Set Set
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Sel Selector
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Match bool
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}{
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{Set{"x": "foo", "y": "baz"}, &internalSelector{
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req,
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}, false},
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{Set{"x": "foo", "y": "baz"}, &internalSelector{
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getRequirement("x", selection.In, sets.NewString("foo"), t),
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getRequirement("y", selection.NotIn, sets.NewString("alpha"), t),
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}, true},
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{Set{"x": "foo", "y": "baz"}, &internalSelector{
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getRequirement("x", selection.In, sets.NewString("foo"), t),
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getRequirement("y", selection.In, sets.NewString("alpha"), t),
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}, false},
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{Set{"y": ""}, &internalSelector{
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getRequirement("x", selection.NotIn, sets.NewString(""), t),
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getRequirement("y", selection.Exists, nil, t),
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}, true},
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{Set{"y": ""}, &internalSelector{
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getRequirement("x", selection.DoesNotExist, nil, t),
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getRequirement("y", selection.Exists, nil, t),
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}, true},
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{Set{"y": ""}, &internalSelector{
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getRequirement("x", selection.NotIn, sets.NewString(""), t),
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getRequirement("y", selection.DoesNotExist, nil, t),
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}, false},
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{Set{"y": "baz"}, &internalSelector{
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getRequirement("x", selection.In, sets.NewString(""), t),
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}, false},
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{Set{"z": "2"}, &internalSelector{
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getRequirement("z", selection.GreaterThan, sets.NewString("1"), t),
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}, true},
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{Set{"z": "v2"}, &internalSelector{
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getRequirement("z", selection.GreaterThan, sets.NewString("1"), t),
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}, false},
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}
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for _, lsm := range labelSelectorMatchingTests {
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if match := lsm.Sel.Matches(lsm.Set); match != lsm.Match {
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t.Errorf("%+v.Matches(%#v) => %v, want %v", lsm.Sel, lsm.Set, match, lsm.Match)
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}
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}
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}
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func TestSetSelectorParser(t *testing.T) {
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setSelectorParserTests := []struct {
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In string
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Out Selector
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Match bool
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Valid bool
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}{
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{"", NewSelector(), true, true},
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{"\rx", internalSelector{
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getRequirement("x", selection.Exists, nil, t),
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}, true, true},
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{"this-is-a-dns.domain.com/key-with-dash", internalSelector{
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getRequirement("this-is-a-dns.domain.com/key-with-dash", selection.Exists, nil, t),
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}, true, true},
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{"this-is-another-dns.domain.com/key-with-dash in (so,what)", internalSelector{
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getRequirement("this-is-another-dns.domain.com/key-with-dash", selection.In, sets.NewString("so", "what"), t),
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}, true, true},
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{"0.1.2.domain/99 notin (10.10.100.1, tick.tack.clock)", internalSelector{
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getRequirement("0.1.2.domain/99", selection.NotIn, sets.NewString("10.10.100.1", "tick.tack.clock"), t),
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}, true, true},
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{"foo in (abc)", internalSelector{
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getRequirement("foo", selection.In, sets.NewString("abc"), t),
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}, true, true},
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{"x notin\n (abc)", internalSelector{
|
|
getRequirement("x", selection.NotIn, sets.NewString("abc"), t),
|
|
}, true, true},
|
|
{"x notin \t (abc,def)", internalSelector{
|
|
getRequirement("x", selection.NotIn, sets.NewString("abc", "def"), t),
|
|
}, true, true},
|
|
{"x in (abc,def)", internalSelector{
|
|
getRequirement("x", selection.In, sets.NewString("abc", "def"), t),
|
|
}, true, true},
|
|
{"x in (abc,)", internalSelector{
|
|
getRequirement("x", selection.In, sets.NewString("abc", ""), t),
|
|
}, true, true},
|
|
{"x in ()", internalSelector{
|
|
getRequirement("x", selection.In, sets.NewString(""), t),
|
|
}, true, true},
|
|
{"x notin (abc,,def),bar,z in (),w", internalSelector{
|
|
getRequirement("bar", selection.Exists, nil, t),
|
|
getRequirement("w", selection.Exists, nil, t),
|
|
getRequirement("x", selection.NotIn, sets.NewString("abc", "", "def"), t),
|
|
getRequirement("z", selection.In, sets.NewString(""), t),
|
|
}, true, true},
|
|
{"x,y in (a)", internalSelector{
|
|
getRequirement("y", selection.In, sets.NewString("a"), t),
|
|
getRequirement("x", selection.Exists, nil, t),
|
|
}, false, true},
|
|
{"x=a", internalSelector{
|
|
getRequirement("x", selection.Equals, sets.NewString("a"), t),
|
|
}, true, true},
|
|
{"x>1", internalSelector{
|
|
getRequirement("x", selection.GreaterThan, sets.NewString("1"), t),
|
|
}, true, true},
|
|
{"x<7", internalSelector{
|
|
getRequirement("x", selection.LessThan, sets.NewString("7"), t),
|
|
}, true, true},
|
|
{"x=a,y!=b", internalSelector{
|
|
getRequirement("x", selection.Equals, sets.NewString("a"), t),
|
|
getRequirement("y", selection.NotEquals, sets.NewString("b"), t),
|
|
}, true, true},
|
|
{"x=a,y!=b,z in (h,i,j)", internalSelector{
|
|
getRequirement("x", selection.Equals, sets.NewString("a"), t),
|
|
getRequirement("y", selection.NotEquals, sets.NewString("b"), t),
|
|
getRequirement("z", selection.In, sets.NewString("h", "i", "j"), t),
|
|
}, true, true},
|
|
{"x=a||y=b", internalSelector{}, false, false},
|
|
{"x,,y", nil, true, false},
|
|
{",x,y", nil, true, false},
|
|
{"x nott in (y)", nil, true, false},
|
|
{"x notin ( )", internalSelector{
|
|
getRequirement("x", selection.NotIn, sets.NewString(""), t),
|
|
}, true, true},
|
|
{"x notin (, a)", internalSelector{
|
|
getRequirement("x", selection.NotIn, sets.NewString("", "a"), t),
|
|
}, true, true},
|
|
{"a in (xyz),", nil, true, false},
|
|
{"a in (xyz)b notin ()", nil, true, false},
|
|
{"a ", internalSelector{
|
|
getRequirement("a", selection.Exists, nil, t),
|
|
}, true, true},
|
|
{"a in (x,y,notin, z,in)", internalSelector{
|
|
getRequirement("a", selection.In, sets.NewString("in", "notin", "x", "y", "z"), t),
|
|
}, true, true}, // operator 'in' inside list of identifiers
|
|
{"a in (xyz abc)", nil, false, false}, // no comma
|
|
{"a notin(", nil, true, false}, // bad formed
|
|
{"a (", nil, false, false}, // cpar
|
|
{"(", nil, false, false}, // opar
|
|
}
|
|
|
|
for _, ssp := range setSelectorParserTests {
|
|
if sel, err := Parse(ssp.In); err != nil && ssp.Valid {
|
|
t.Errorf("Parse(%s) => %v expected no error", ssp.In, err)
|
|
} else if err == nil && !ssp.Valid {
|
|
t.Errorf("Parse(%s) => %+v expected error", ssp.In, sel)
|
|
} else if ssp.Match && !reflect.DeepEqual(sel, ssp.Out) {
|
|
t.Errorf("Parse(%s) => parse output '%#v' doesn't match '%#v' expected match", ssp.In, sel, ssp.Out)
|
|
}
|
|
}
|
|
}
|
|
|
|
func getRequirement(key string, op selection.Operator, vals sets.String, t *testing.T) Requirement {
|
|
req, err := NewRequirement(key, op, vals.List())
|
|
if err != nil {
|
|
t.Errorf("NewRequirement(%v, %v, %v) resulted in error:%v", key, op, vals, err)
|
|
return Requirement{}
|
|
}
|
|
return *req
|
|
}
|
|
|
|
func TestAdd(t *testing.T) {
|
|
testCases := []struct {
|
|
name string
|
|
sel Selector
|
|
key string
|
|
operator selection.Operator
|
|
values []string
|
|
refSelector Selector
|
|
}{
|
|
{
|
|
"keyInOperator",
|
|
internalSelector{},
|
|
"key",
|
|
selection.In,
|
|
[]string{"value"},
|
|
internalSelector{Requirement{"key", selection.In, []string{"value"}}},
|
|
},
|
|
{
|
|
"keyEqualsOperator",
|
|
internalSelector{Requirement{"key", selection.In, []string{"value"}}},
|
|
"key2",
|
|
selection.Equals,
|
|
[]string{"value2"},
|
|
internalSelector{
|
|
Requirement{"key", selection.In, []string{"value"}},
|
|
Requirement{"key2", selection.Equals, []string{"value2"}},
|
|
},
|
|
},
|
|
}
|
|
for _, ts := range testCases {
|
|
req, err := NewRequirement(ts.key, ts.operator, ts.values)
|
|
if err != nil {
|
|
t.Errorf("%s - Unable to create labels.Requirement", ts.name)
|
|
}
|
|
ts.sel = ts.sel.Add(*req)
|
|
if !reflect.DeepEqual(ts.sel, ts.refSelector) {
|
|
t.Errorf("%s - Expected %v found %v", ts.name, ts.refSelector, ts.sel)
|
|
}
|
|
}
|
|
}
|