# Code coverage report for spec/ast.js

## Statements: 28.99% (69 / 238) Branches: 100% (2 / 2) Functions: 30.88% (21 / 68) Lines: 28.99% (69 / 238) Ignored: none

All files » spec/ » ast.js

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     /*global Handlebars, handlebarsEnv, shouldThrow */
    describe('ast', function() {
      if (!Handlebars.AST) {
        return;
      }

      var LOCATION_INFO = {
        last_line: 0,
        first_line: 0,
        first_column: 0,
        last_column: 0
      };

      function testLocationInfoStorage(node){
        var properties = [ 'firstLine', 'lastLine', 'firstColumn', 'lastColumn' ],
            property,
            propertiesLen = properties.length,
            i;

        for (i = 0; i < propertiesLen; i++){
          property = properties[0];
          equals(node[property], 0);
        }
      }

      describe('MustacheNode', function() {
        function testEscape(open, expected) {
          var mustache = new handlebarsEnv.AST.MustacheNode([{}], {}, open, false);
          equals(mustache.escaped, expected);
        }

        it('should store args', function() {
          var id = {isSimple: true},
              hash = {},
              mustache = new handlebarsEnv.AST.MustacheNode([id, 'param1'], hash, '', false, LOCATION_INFO);
          equals(mustache.type, 'mustache');
          equals(mustache.hash, hash);
          equals(mustache.escaped, true);
          equals(mustache.id, id);
          equals(mustache.params.length, 1);
          equals(mustache.params[0], 'param1');
          equals(!!mustache.isHelper, true);
          testLocationInfoStorage(mustache);
        });
        it('should accept token for escape', function() {
          testEscape('{{', true);
          testEscape('{{~', true);
          testEscape('{{#', true);
          testEscape('{{~#', true);
          testEscape('{{/', true);
          testEscape('{{~/', true);
          testEscape('{{^', true);
          testEscape('{{~^', true);
          testEscape('{', true);
          testEscape('{', true);

          testEscape('{{&', false);
          testEscape('{{~&', false);
          testEscape('{{{', false);
          testEscape('{{~{', false);
        });
        it('should accept boolean for escape', function() {
          testEscape(true, true);
          testEscape({}, true);

          testEscape(false, false);
          testEscape(undefined, false);
        });
      });
      describe('BlockNode', function() {
        it('should throw on mustache mismatch (old sexpr-less version)', function() {
          shouldThrow(function() {
            var mustacheNode = new handlebarsEnv.AST.MustacheNode([{ original: 'foo'}], null, '{{', {});
            new handlebarsEnv.AST.BlockNode(mustacheNode, {}, {}, {path: {original: 'bar'}});
          }, Handlebars.Exception, "foo doesn't match bar");
        });
        it('should throw on mustache mismatch', function() {
          shouldThrow(function() {
            var sexprNode = new handlebarsEnv.AST.SexprNode([{ original: 'foo'}], null);
            var mustacheNode = new handlebarsEnv.AST.MustacheNode(sexprNode, null, '{{', {});
            new handlebarsEnv.AST.BlockNode(mustacheNode, {}, {}, {path: {original: 'bar'}}, {first_line: 2, first_column: 2});
          }, Handlebars.Exception, "foo doesn't match bar - 2:2");
        });

        it('stores location info', function(){
          var sexprNode = new handlebarsEnv.AST.SexprNode([{ original: 'foo'}], null);
          var mustacheNode = new handlebarsEnv.AST.MustacheNode(sexprNode, null, '{{', {});
          var block = new handlebarsEnv.AST.BlockNode(mustacheNode,
                                                      {statements: [], strip: {}}, {statements: [], strip: {}},
                                                      {
                                                        strip: {},
                                                        path: {original: 'foo'}
                                                      },
                                                      LOCATION_INFO);
          testLocationInfoStorage(block);
        });
      });
      describe('IdNode', function() {
        it('should throw on invalid path', function() {
          shouldThrow(function() {
            new handlebarsEnv.AST.IdNode([
              {part: 'foo'},
              {part: '..'},
              {part: 'bar'}
            ], {first_line: 1, first_column: 1});
          }, Handlebars.Exception, "Invalid path: foo.. - 1:1");
          shouldThrow(function() {
            new handlebarsEnv.AST.IdNode([
              {part: 'foo'},
              {part: '.'},
              {part: 'bar'}
            ], {first_line: 1, first_column: 1});
          }, Handlebars.Exception, "Invalid path: foo. - 1:1");
          shouldThrow(function() {
            new handlebarsEnv.AST.IdNode([
              {part: 'foo'},
              {part: 'this'},
              {part: 'bar'}
            ], {first_line: 1, first_column: 1});
          }, Handlebars.Exception, "Invalid path: foothis - 1:1");
        });

        it('stores location info', function(){
          var idNode = new handlebarsEnv.AST.IdNode([], LOCATION_INFO);
          testLocationInfoStorage(idNode);
        });
      });

      describe("HashNode", function(){

        it('stores location info', function(){
          var hash = new handlebarsEnv.AST.HashNode([], LOCATION_INFO);
          testLocationInfoStorage(hash);
        });
      });

      describe("ContentNode", function(){

        it('stores location info', function(){
          var content = new handlebarsEnv.AST.ContentNode("HI", LOCATION_INFO);
          testLocationInfoStorage(content);
        });
      });

      describe("CommentNode", function(){

        it('stores location info', function(){
          var comment = new handlebarsEnv.AST.CommentNode("HI", LOCATION_INFO);
          testLocationInfoStorage(comment);
        });
      });

      describe("NumberNode", function(){

        it('stores location info', function(){
          var integer = new handlebarsEnv.AST.NumberNode("6", LOCATION_INFO);
          testLocationInfoStorage(integer);
        });
      });

      describe("StringNode", function(){

        it('stores location info', function(){
          var string = new handlebarsEnv.AST.StringNode("6", LOCATION_INFO);
          testLocationInfoStorage(string);
        });
      });

      describe("BooleanNode", function(){

        it('stores location info', function(){
          var bool = new handlebarsEnv.AST.BooleanNode("true", LOCATION_INFO);
          testLocationInfoStorage(bool);
        });
      });

      describe("DataNode", function(){

        it('stores location info', function(){
          var data = new handlebarsEnv.AST.DataNode("YES", LOCATION_INFO);
          testLocationInfoStorage(data);
        });
      });

      describe("PartialNameNode", function(){

        it('stores location info', function(){
          var pnn = new handlebarsEnv.AST.PartialNameNode({original: "YES"}, LOCATION_INFO);
          testLocationInfoStorage(pnn);
        });
      });

      describe("PartialNode", function(){

        it('stores location info', function(){
          var pn = new handlebarsEnv.AST.PartialNode("so_partial", {}, {}, {}, LOCATION_INFO);
          testLocationInfoStorage(pn);
        });
      });
      describe("ProgramNode", function(){

        describe("storing location info", function(){
          it("stores when `inverse` argument isn't passed", function(){
            var pn = new handlebarsEnv.AST.ProgramNode(false, [], LOCATION_INFO);
            testLocationInfoStorage(pn);
          });

          it("stores when `inverse` or `stripInverse` arguments passed", function(){
            var pn = new handlebarsEnv.AST.ProgramNode(false, [], {strip: {}}, undefined, LOCATION_INFO);
            testLocationInfoStorage(pn);

            var clone = {
              strip: {},
              firstLine: 0,
              lastLine: 0,
              firstColumn: 0,
              lastColumn: 0
            };
            pn = new handlebarsEnv.AST.ProgramNode(false, [], {strip: {}}, [ clone ], LOCATION_INFO);
            testLocationInfoStorage(pn);

            // Assert that the newly created ProgramNode has the same location
            // information as the inverse
            testLocationInfoStorage(pn.inverse);
          });
        });
      });

      describe("Line Numbers", function(){
        var ast, statements;

        function testColumns(node, firstLine, lastLine, firstColumn, lastColumn){
          equals(node.firstLine, firstLine);
          equals(node.lastLine, lastLine);
          equals(node.firstColumn, firstColumn);
          equals(node.lastColumn, lastColumn);
        }

        ast = Handlebars.parse("line 1 {{line1Token}}\n line 2 {{line2token}}\n line 3 {{#blockHelperOnLine3}}\nline 4{{line4token}}\n" +
                               "line5{{else}}\n{{line6Token}}\n{{/blockHelperOnLine3}}");
        statements = ast.statements;

        it('gets ContentNode line numbers', function(){
          var contentNode = statements[0];
          testColumns(contentNode, 1, 1, 0, 7);
        });

        it('gets MustacheNode line numbers', function(){
          var mustacheNode = statements[1];
          testColumns(mustacheNode, 1, 1, 7, 21);
        });

        it('gets line numbers correct when newlines appear', function(){
          testColumns(statements[2], 1, 2, 21, 0);
          testColumns(statements[3], 2, 2, 0, 8);
        });

        it('gets MustacheNode line numbers correct across newlines', function(){
          var secondMustacheNode = statements[4];
          testColumns(secondMustacheNode, 2, 2, 8, 22);
         });

         it('gets the block helper information correct', function(){
           var blockHelperNode = statements[7];
           testColumns(blockHelperNode, 3, 7, 8, 23);
         });

         it('correctly records the line numbers of an inverse of a block helper', function(){
           var blockHelperNode = statements[7],
               inverse = blockHelperNode.inverse;

           testColumns(inverse, 5, 6, 13, 0);
         });
      });

      describe('standalone flags', function(){
        describe('mustache', function() {
          it('does not mark mustaches as standalone', function() {
            var ast = Handlebars.parse('  {{comment}} ');
            equals(ast.statements[0].omit, undefined);
            equals(ast.statements[2].omit, undefined);
          });
        });
        describe('blocks', function() {
          it('marks block mustaches as standalone', function() {
            var ast = Handlebars.parse(' {{# comment}} \nfoo\n {{else}} \n  bar \n  {{/comment}} '),
                block = ast.statements[1];

            equals(ast.statements[0].omit, true);

            equals(block.program.statements[0].omit, true);
            equals(block.program.statements[1].string, 'foo\n');
            equals(block.program.statements[2].omit, true);

            equals(block.inverse.statements[0].omit, true);
            equals(block.inverse.statements[1].string, '  bar \n');
            equals(block.inverse.statements[2].omit, true);

            equals(ast.statements[2].omit, true);
          });
          it('marks initial block mustaches as standalone', function() {
            var ast = Handlebars.parse('{{# comment}} \nfoo\n {{/comment}}'),
                block = ast.statements[0];

            equals(block.program.statements[0].omit, true);
            equals(block.program.statements[1].string, 'foo\n');
            equals(block.program.statements[2].omit, true);
          });
          it('marks mustaches with children as standalone', function() {
            var ast = Handlebars.parse('{{# comment}} \n{{foo}}\n {{/comment}}'),
                block = ast.statements[0];

            equals(block.program.statements[0].omit, true);
            equals(block.program.statements[1].id.original, 'foo');
            equals(block.program.statements[2].omit, undefined);
            equals(block.program.statements[3].omit, true);
          });
          it('marks nested block mustaches as standalone', function() {
            var ast = Handlebars.parse('{{#foo}} \n{{# comment}} \nfoo\n {{else}} \n  bar \n  {{/comment}} \n{{/foo}}'),
                statements = ast.statements[0].program.statements,
                block = statements[1];

            equals(statements[0].omit, true);

            equals(block.program.statements[0].omit, true);
            equals(block.program.statements[1].string, 'foo\n');
            equals(block.program.statements[2].omit, true);

            equals(block.inverse.statements[0].omit, true);
            equals(block.inverse.statements[1].string, '  bar \n');
            equals(block.inverse.statements[2].omit, true);

            equals(statements[0].omit, true);
          });
          it('does not mark nested block mustaches as standalone', function() {
            var ast = Handlebars.parse('{{#foo}} {{# comment}} \nfoo\n {{else}} \n  bar \n  {{/comment}} {{/foo}}'),
                statements = ast.statements[0].program.statements,
                block = statements[1];

            equals(statements[0].omit, undefined);

            equals(block.program.statements[0].omit, undefined);
            equals(block.program.statements[1].string, 'foo\n');
            equals(block.program.statements[2].omit, true);

            equals(block.inverse.statements[0].omit, true);
            equals(block.inverse.statements[1].string, '  bar \n');
            equals(block.inverse.statements[2].omit, undefined);

            equals(statements[0].omit, undefined);
          });
          it('does not mark nested initial block mustaches as standalone', function() {
            var ast = Handlebars.parse('{{#foo}}{{# comment}} \nfoo\n {{else}} \n  bar \n  {{/comment}}{{/foo}}'),
                statements = ast.statements[0].program.statements,
                block = statements[0];

            equals(block.program.statements[0].omit, undefined);
            equals(block.program.statements[1].string, 'foo\n');
            equals(block.program.statements[2].omit, true);

            equals(block.inverse.statements[0].omit, true);
            equals(block.inverse.statements[1].string, '  bar \n');
            equals(block.inverse.statements[2].omit, undefined);

            equals(statements[0].omit, undefined);
          });

          it('marks column 0 block mustaches as standalone', function() {
            var ast = Handlebars.parse('test\n{{# comment}} \nfoo\n {{else}} \n  bar \n  {{/comment}} '),
                block = ast.statements[1];

            equals(ast.statements[0].omit, undefined);

            equals(block.program.statements[0].omit, true);
            equals(block.program.statements[1].string, 'foo\n');
            equals(block.program.statements[2].omit, true);

            equals(block.inverse.statements[0].omit, true);
            equals(block.inverse.statements[1].string, '  bar \n');
            equals(block.inverse.statements[2].omit, true);

            equals(ast.statements[2].omit, true);
          });
        });
        describe('partials', function() {
          it('marks partial as standalone', function() {
            var ast = Handlebars.parse('{{> partial }} ');
            equals(ast.statements[1].omit, true);
          });
          it('marks indented partial as standalone', function() {
            var ast = Handlebars.parse('  {{> partial }} ');
            equals(ast.statements[0].omit, true);
            equals(ast.statements[1].indent, '  ');
            equals(ast.statements[2].omit, true);
          });
          it('marks those around content as not standalone', function() {
            var ast = Handlebars.parse('a{{> partial }}');
            equals(ast.statements[0].omit, undefined);

            ast = Handlebars.parse('{{> partial }}a');
            equals(ast.statements[1].omit, undefined);
          });
        });
        describe('comments', function() {
          it('marks comment as standalone', function() {
            var ast = Handlebars.parse('{{! comment }} ');
            equals(ast.statements[1].omit, true);
          });
          it('marks indented comment as standalone', function() {
            var ast = Handlebars.parse('  {{! comment }} ');
            equals(ast.statements[0].omit, true);
            equals(ast.statements[2].omit, true);
          });
          it('marks those around content as not standalone', function() {
            var ast = Handlebars.parse('a{{! comment }}');
            equals(ast.statements[0].omit, undefined);

            ast = Handlebars.parse('{{! comment }}a');
            equals(ast.statements[1].omit, undefined);
          });
        });
      });
    });