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217 |
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| /*global CompilerContext, shouldCompileTo */
describe('subexpressions', function() {
it("arg-less helper", function() {
var string = "{{foo (bar)}}!";
var context = {};
var helpers = {
foo: function(val) {
return val+val;
},
bar: function() {
return "LOL";
}
};
shouldCompileTo(string, [context, helpers], "LOLLOL!");
});
it("helper w args", function() {
var string = '{{blog (equal a b)}}';
var context = { bar: "LOL" };
var helpers = {
blog: function(val) {
return "val is " + val;
},
equal: function(x, y) {
return x === y;
}
};
shouldCompileTo(string, [context, helpers], "val is true");
});
it("mixed paths and helpers", function() {
var string = '{{blog baz.bat (equal a b) baz.bar}}';
var context = { bar: "LOL", baz: {bat: 'foo!', bar: 'bar!'} };
var helpers = {
blog: function(val, that, theOther) {
return "val is " + val + ', ' + that + ' and ' + theOther;
},
equal: function(x, y) {
return x === y;
}
};
shouldCompileTo(string, [context, helpers], "val is foo!, true and bar!");
});
it("supports much nesting", function() {
var string = '{{blog (equal (equal true true) true)}}';
var context = { bar: "LOL" };
var helpers = {
blog: function(val) {
return "val is " + val;
},
equal: function(x, y) {
return x === y;
}
};
shouldCompileTo(string, [context, helpers], "val is true");
});
it('GH-800 : Complex subexpressions', function() {
var context = {a: 'a', b:'b', c:{c:'c'}, d:'d', e: {e: 'e'}};
var helpers = {
dash: function(a, b) {
return a + "-" + b;
},
concat: function(a, b) {
return a + b;
}
};
shouldCompileTo('{{dash "abc" (concat a b)}}', [context, helpers], 'abc-ab');
shouldCompileTo('{{dash d (concat a b)}}', [context, helpers], 'd-ab');
shouldCompileTo('{{dash c.c (concat a b)}}', [context, helpers], 'c-ab');
shouldCompileTo('{{dash (concat a b) c.c}}', [context, helpers], 'ab-c');
shouldCompileTo('{{dash (concat a e.e) c.c}}', [context, helpers], 'ae-c');
});
it("provides each nested helper invocation its own options hash", function() {
var string = '{{equal (equal true true) true}}';
var lastOptions = null;
var helpers = {
equal: function(x, y, options) {
if (!options || options === lastOptions) {
throw new Error("options hash was reused");
}
lastOptions = options;
return x === y;
}
};
shouldCompileTo(string, [{}, helpers], "true");
});
it("with hashes", function() {
var string = '{{blog (equal (equal true true) true fun="yes")}}';
var context = { bar: "LOL" };
var helpers = {
blog: function(val) {
return "val is " + val;
},
equal: function(x, y) {
return x === y;
}
};
shouldCompileTo(string, [context, helpers], "val is true");
});
it("as hashes", function() {
var string = '{{blog fun=(equal (blog fun=1) "val is 1")}}';
var helpers = {
blog: function(options) {
return "val is " + options.hash.fun;
},
equal: function(x, y) {
return x === y;
}
};
shouldCompileTo(string, [{}, helpers], "val is true");
});
it("multiple subexpressions in a hash", function() {
var string = '{{input aria-label=(t "Name") placeholder=(t "Example User")}}';
var helpers = {
input: function(options) {
var hash = options.hash;
var ariaLabel = Handlebars.Utils.escapeExpression(hash['aria-label']);
var placeholder = Handlebars.Utils.escapeExpression(hash.placeholder);
return new Handlebars.SafeString('<input aria-label="' + ariaLabel + '" placeholder="' + placeholder + '" />');
},
t: function(defaultString) {
return new Handlebars.SafeString(defaultString);
}
}
shouldCompileTo(string, [{}, helpers], '<input aria-label="Name" placeholder="Example User" />');
});
it("in string params mode,", function() {
var template = CompilerContext.compile('{{snog (blorg foo x=y) yeah a=b}}', {stringParams: true});
var helpers = {
snog: function(a, b, options) {
equals(a, 'foo');
equals(options.types.length, 2, "string params for outer helper processed correctly");
equals(options.types[0], 'sexpr', "string params for outer helper processed correctly");
equals(options.types[1], 'ID', "string params for outer helper processed correctly");
return a + b;
},
blorg: function(a, options) {
equals(options.types.length, 1, "string params for inner helper processed correctly");
equals(options.types[0], 'ID', "string params for inner helper processed correctly");
return a;
}
};
var result = template({
foo: {},
yeah: {}
}, {helpers: helpers});
equals(result, "fooyeah");
});
it("as hashes in string params mode", function() {
var template = CompilerContext.compile('{{blog fun=(bork)}}', {stringParams: true});
var helpers = {
blog: function(options) {
equals(options.hashTypes.fun, 'sexpr');
return "val is " + options.hash.fun;
},
bork: function() {
return "BORK";
}
};
var result = template({}, {helpers: helpers});
equals(result, "val is BORK");
});
it("subexpression functions on the context", function() {
var string = "{{foo (bar)}}!";
var context = {
bar: function() {
return "LOL";
}
};
var helpers = {
foo: function(val) {
return val+val;
}
};
shouldCompileTo(string, [context, helpers], "LOLLOL!");
});
it("subexpressions can't just be property lookups", function() {
var string = "{{foo (bar)}}!";
var context = {
bar: "LOL"
};
var helpers = {
foo: function(val) {
return val+val;
}
};
shouldThrow(function() {
shouldCompileTo(string, [context, helpers], "LOLLOL!");
});
});
});
|