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compiler.js
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compiler.js
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describe('compiler', function() {
if (!Handlebars.compile) {
return;
}
describe('#equals', function() {
function compile(string) {
var ast = Handlebars.parse(string);
return new Handlebars.Compiler().compile(ast, {});
}
it('should treat as equal', function() {
equal(compile('foo').equals(compile('foo')), true);
equal(compile('{{foo}}').equals(compile('{{foo}}')), true);
equal(compile('{{foo.bar}}').equals(compile('{{foo.bar}}')), true);
equal(compile('{{foo.bar baz "foo" true false bat=1}}').equals(compile('{{foo.bar baz "foo" true false bat=1}}')), true);
equal(compile('{{foo.bar (baz bat=1)}}').equals(compile('{{foo.bar (baz bat=1)}}')), true);
equal(compile('{{#foo}} {{/foo}}').equals(compile('{{#foo}} {{/foo}}')), true);
});
it('should treat as not equal', function() {
equal(compile('foo').equals(compile('bar')), false);
equal(compile('{{foo}}').equals(compile('{{bar}}')), false);
equal(compile('{{foo.bar}}').equals(compile('{{bar.bar}}')), false);
equal(compile('{{foo.bar baz bat=1}}').equals(compile('{{foo.bar bar bat=1}}')), false);
equal(compile('{{foo.bar (baz bat=1)}}').equals(compile('{{foo.bar (bar bat=1)}}')), false);
equal(compile('{{#foo}} {{/foo}}').equals(compile('{{#bar}} {{/bar}}')), false);
equal(compile('{{#foo}} {{/foo}}').equals(compile('{{#foo}} {{foo}}{{/foo}}')), false);
});
});
describe('#compile', function() {
it('should fail with invalid input', function() {
shouldThrow(function() {
Handlebars.compile(null);
}, Error, 'You must pass a string or Handlebars AST to Handlebars.compile. You passed null');
shouldThrow(function() {
Handlebars.compile({});
}, Error, 'You must pass a string or Handlebars AST to Handlebars.compile. You passed [object Object]');
});
it('should include the location in the error (row and column)', function() {
try {
Handlebars.compile(' \n {{#if}}\n{{/def}}')();
equal(true, false, 'Statement must throw exception. This line should not be executed.');
} catch (err) {
equal(err.message, 'if doesn\'t match def - 2:5', 'Checking error message');
if (Object.getOwnPropertyDescriptor(err, 'column').writable) {
// In Safari 8, the column-property is read-only. This means that even if it is set with defineProperty,
// its value won't change (https://github.com/jquery/esprima/issues/1290#issuecomment-132455482)
// Since this was neither working in Handlebars 3 nor in 4.0.5, we only check the column for other browsers.
equal(err.column, 5, 'Checking error column');
}
equal(err.lineNumber, 2, 'Checking error row');
}
});
it('should include the location as enumerable property', function() {
try {
Handlebars.compile(' \n {{#if}}\n{{/def}}')();
equal(true, false, 'Statement must throw exception. This line should not be executed.');
} catch (err) {
equal(err.propertyIsEnumerable('column'), true, 'Checking error column');
}
});
it('can utilize AST instance', function() {
equal(Handlebars.compile({
type: 'Program',
body: [ {type: 'ContentStatement', value: 'Hello'}]
})(), 'Hello');
});
it('can pass through an empty string', function() {
equal(Handlebars.compile('')(), '');
});
});
describe('#precompile', function() {
it('should fail with invalid input', function() {
shouldThrow(function() {
Handlebars.precompile(null);
}, Error, 'You must pass a string or Handlebars AST to Handlebars.precompile. You passed null');
shouldThrow(function() {
Handlebars.precompile({});
}, Error, 'You must pass a string or Handlebars AST to Handlebars.precompile. You passed [object Object]');
});
it('can utilize AST instance', function() {
equal(/return "Hello"/.test(Handlebars.precompile({
type: 'Program',
body: [ {type: 'ContentStatement', value: 'Hello'}]
})), true);
});
it('can pass through an empty string', function() {
equal(/return ""/.test(Handlebars.precompile('')), true);
});
});
});