don't run these tests that fail on node v6.

Author: chriseppstein

package-lock.json

@@ -20,7 +20,8 @@
     "glob": "^7.0.3",
     "minimist": "^1.2.0",
     "nyc": "^11.4.1",
-    "postcss": "^6.0.6"
+    "postcss": "^6.0.6",
+    "semver": "^5.5.0"
   },
   "main": "dist/index.js",
   "types": "postcss-selector-parser.d.ts",

package.json

@@ -1,6 +1,6 @@
 import process from "process";
 import Attribute from '../selectors/attribute';
-import {test} from './util/helpers';
+import {test, nodeVersionAtLeast, nodeVersionBefore} from './util/helpers';
 
 process.throwDeprecation = true;
 
@@ -397,7 +397,9 @@ test('non standard modifiers', '[href="foo" y]', (t, tree) => {
     t.deepEqual(tree.toString(), '[href="foo" y]');
 });
 
-test('deprecated constructor', '', (t) => {
+const testDeprecation = nodeVersionAtLeast('7.0.0') || nodeVersionBefore('6.0.0') ? test : test.skip;
+
+testDeprecation('deprecated constructor', '', (t) => {
     t.throws(
         () => {
             return new Attribute({value: '"foo"', attribute: "data-bar"});
@@ -406,7 +408,7 @@ test('deprecated constructor', '', (t) => {
     );
 });
 
-test('deprecated get of raws.unquoted ', '', (t) => {
+testDeprecation('deprecated get of raws.unquoted ', '', (t) => {
     t.throws(
         () => {
             let attr = new Attribute({value: 'foo', quoteMark: '"', attribute: "data-bar"});
@@ -416,7 +418,7 @@ test('deprecated get of raws.unquoted ', '', (t) => {
     );
 });
 
-test('deprecated set of raws.unquoted ', '', (t) => {
+testDeprecation('deprecated set of raws.unquoted ', '', (t) => {
     t.throws(
         () => {
             let attr = new Attribute({value: 'foo', quoteMark: '"', attribute: "data-bar"});
@@ -426,7 +428,7 @@ test('deprecated set of raws.unquoted ', '', (t) => {
     );
 });
 
-test('smart quotes', '[data-foo=bar]', (t, tree) => {
+testDeprecation('smart quotes', '[data-foo=bar]', (t, tree) => {
     let attr = tree.nodes[0].nodes[0];
     attr.setValue('changed', {quoteMark: '"'});
     t.deepEqual(attr.toString(), '[data-foo="changed"]');

src/__tests__/attributes.js

@@ -1,5 +1,7 @@
+import process from 'process';
 import util from 'util';
 import ava from 'ava';
+import semver from 'semver';
 import parser from '../../index';
 
 export const parse = (input, transform) => {
@@ -34,3 +36,11 @@ export const throws = (spec, input, validator) => {
         t.throws(() => parser().processSync(input), validator);
     });
 };
+
+export function nodeVersionAtLeast (version) {
+    return semver.gte(process.versions.node, version);
+}
+
+export function nodeVersionBefore (version) {
+    return semver.lt(process.versions.node, version);
+}