fix: find variable in parent scope (strict_variables)

src/scope.js

@@ -1,7 +1,6 @@
 const _ = require('./util/underscore.js');
 const lexical = require('./lexical.js');
 const assert = require('./util/assert.js');
-const referenceError = /undefined variable|Cannot read property .* of undefined/;
 
 var Scope = {
     getAll: function() {
@@ -16,13 +15,23 @@ var Scope = {
             try {
                 return this.getPropertyByPath(this.scopes[i], str);
             } catch (e) {
-                if (!referenceError.test(e.message) || this.opts.strict_variables) {
+                if (/undefined variable/.test(e.message)) {
+                    continue;
+                }
+                if (/Cannot read property/.test(e.message)) {
+                    if (this.opts.strict_variables) {
+                        e.message += ': ' + str;
+                        throw e;
+                    } else {
+                        continue;
+                    }
+                } else {
                     e.message += ': ' + str;
                     throw e;
                 }
             }
         }
-        if(this.opts.strict_variables){
+        if (this.opts.strict_variables) {
             throw new TypeError('undefined variable: ' + str);
         }
     },

src/util/error.js

@@ -14,7 +14,11 @@ TokenizationError.prototype.constructor = TokenizationError;
 function ParseError(message, input, line, e) {
     if(Error.captureStackTrace){
         Error.captureStackTrace(this, this.constructor);
+    } else{
+        this.stack = "";
     }
+    this.stack += (this.stack ? "\nFrom " : "From ") + e.stack;
+
     this.name = this.constructor.name;
     this.originalError = e;
 

test/scope.js

@@ -71,21 +71,6 @@ describe('scope', function() {
             }).to.throw(/unbalanced '/);
         });
 
-        it('should throw undefined in strict mode', function() {
-            scope = Scope.factory(ctx, {
-                strict_variables: true
-            });
-
-            function fn() {
-                scope.get('notdefined');
-            }
-            expect(fn).to.throw(/undefined variable: notdefined/);
-        });
-
-        it('should get all properties when arguments empty', function() {
-            expect(scope.getAll()).deep.equal(ctx);
-        });
-
         it('should access child property via dot syntax', function() {
             expect(scope.get('bar.zoo')).to.equal('coo');
             expect(scope.get('bar.arr')).to.deep.equal(['a', 'b']);
@@ -116,6 +101,34 @@ describe('scope', function() {
         });
     });
 
+    describe('strict_variables', function() {
+        var scope;
+        beforeEach(function(){
+            scope = Scope.factory(ctx, {
+                strict_variables: true
+            });
+        });
+        it('should throw undefined in strict mode', function() {
+            function fn() {
+                scope.get('notdefined');
+            }
+            expect(fn).to.throw(/undefined variable: notdefined/);
+        });
+        it('should find variable in parent scope', function() {
+            scope.set('foo', 'foo');
+            scope.push({
+                'bar': 'bar'
+            });
+            expect(scope.get('foo')).to.equal('foo');
+        });
+    });
+
+    describe('.getAll()', function() {
+        it('should get all properties when arguments empty', function() {
+            expect(scope.getAll()).deep.equal(ctx);
+        });
+    });
+
     describe('.push()', function() {
         it('should throw when trying to push non-object', function() {
             expect(function() {

test/tags/include.js

@@ -29,8 +29,10 @@ describe('tags/include', function() {
         mock({
             '/illegal.html': '{%include%}',
         });
-        return expect(liquid.renderFile('/illegal.html')).to.
+        return liquid.renderFile('/illegal.html').catch(function(e){
-            be.rejectedWith(ParseError, /illegal token {%include%}/);
+            expect(e.name).to.equal('ParseError');
+            expect(e.message).to.match(/illegal token {%include%}/);
+        });
     });
 
     it('should support include with relative path', function() {

test/util/error.js

@@ -66,7 +66,8 @@ describe('error', function() {
             return engine.parseAndRender(src).catch(function(err) {
                 expect(err.name).to.equal('ParseError');
                 expect(err.input).to.equal('{% -a %}');
-                expect(err.line).to.equal(3);
+                expect(err.line).to.equal(3)
+                expect(err.stack).to.contain('From AssertionError: tag -a not found');
             });
         });
         it('should throw correct error info for files', function() {