added first ContextResolver specs

Author: mkusher

specs/completer/resolver/ContextResolver.spec.php

@@ -0,0 +1,23 @@
+<?php
+
+use Complete\Resolver\ContextResolver;
+use Parser\ErrorFreePhpParser;
+use PhpParser\Lexer;
+use Entity\Completion\Context;
+
+describe('ContextResolver', function(){
+    beforeEach(function(){
+        $this->parser = new ErrorFreePhpParser(new Lexer);
+        $this->resolver = new ContextResolver($this->parser);
+        $this->dummyLine = '$obj->getMethod()->';
+    });
+    describe('getContext()', function(){
+        it('throws exception on empty line', function(){
+            expect(function($l){ $this->resolver->getContext($l); })->with('')->to->throw('Exception');
+        });
+        it('returns Context instance', function(){
+            $result = $this->resolver->getContext($this->dummyLine);
+            expect($result)->to->be->an->instanceof(Context::class);
+        });
+    });
+});