test(scope): add scope field

Author: blond

test/scope.test.js

@@ -0,0 +1,50 @@
+import test from 'ava';
+
+import BemEntityName from '../lib/entity-name';
+
+test('should return scope of block', t => {
+    const entityName = new BemEntityName({ block: 'block' });
+
+    t.is(entityName.scope, null);
+});
+
+test('should return scope of block modifier', t => {
+    const entityName = new BemEntityName({ block: 'block', mod: 'mod' });
+
+    t.deepEqual(entityName.scope.valueOf(), { block: 'block' });
+});
+
+test('should return same scope for simple and complex mod', t => {
+    const simpleModName = new BemEntityName({ block: 'block', mod: 'mod' });
+    const complexModName = new BemEntityName({ block: 'block', mod: { name: 'mod', val: 'val' } });
+
+    t.deepEqual(simpleModName.scope, complexModName.scope);
+});
+
+test('should return scope of element', t => {
+    const entityName = new BemEntityName({ block: 'block', elem: 'elem' });
+
+    t.deepEqual(entityName.scope.valueOf(), { block: 'block' });
+});
+
+test('should return scope of element modifier', t => {
+    const entityName = new BemEntityName({ block: 'block', elem: 'elem', mod: 'mod' });
+
+    t.deepEqual(entityName.scope.valueOf(), { block: 'block', elem: 'elem' });
+});
+
+test('should cache scope value', t => {
+    const entity = new BemEntityName({ block: 'block', elem: 'elem' });
+
+    entity.scope; // eslint-disable-line no-unused-expressions
+
+    t.deepEqual(entity._scope.valueOf(), { block: 'block' });
+});
+
+test('should get scope from cache', t => {
+    const entity = new BemEntityName({ block: 'block', elem: 'elem' });
+
+    entity._scope = 'fake';
+
+    t.is(entity.scope, 'fake');
+});