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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(
Object.prototype.propertyIsEnumerable.call(err, 'column'),
true,
'Checking error column'
);
}
});
it('can utilize AST instance', function() {
equal(
Handlebars.compile({
type: 'Program',
body: [{ type: 'ContentStatement', value: 'Hello' }]
})(),
'Hello'
);
});
it('should reject AST with invalid PathExpression depth', function() {
shouldThrow(
function() {
Handlebars.compile({
type: 'Program',
body: [
{
type: 'MustacheStatement',
escaped: true,
strip: { open: false, close: false },
path: {
type: 'PathExpression',
data: false,
depth: '0',
parts: ['this'],
original: 'this'
},
params: []
}
]
})();
},
Error,
'Invalid AST: PathExpression.depth must be an integer'
);
});
it('should reject AST with non-array PathExpression parts', function() {
shouldThrow(
function() {
Handlebars.compile({
type: 'Program',
body: [
{
type: 'MustacheStatement',
escaped: true,
strip: { open: false, close: false },
path: {
type: 'PathExpression',
data: false,
depth: 0,
parts: 'this',
original: 'this'
},
params: []
}
]
})();
},
Error,
'Invalid AST: PathExpression.parts must be an array'
);
});
it('should reject AST with non-string PathExpression part', function() {
shouldThrow(
function() {
Handlebars.compile({
type: 'Program',
body: [
{
type: 'MustacheStatement',
escaped: true,
strip: { open: false, close: false },
path: {
type: 'PathExpression',
data: false,
depth: 0,
parts: [1],
original: 'this'
},
params: []
}
]
})();
},
Error,
'Invalid AST: PathExpression.parts must only contain strings'
);
});
it('should reject AST with invalid BooleanLiteral value type', function() {
shouldThrow(
function() {
Handlebars.compile({
type: 'Program',
body: [
{
type: 'MustacheStatement',
escaped: true,
strip: { open: false, close: false },
path: {
type: 'PathExpression',
data: false,
depth: 0,
parts: ['if'],
original: 'if'
},
params: [
{
type: 'BooleanLiteral',
value: 'true',
original: true
}
]
}
]
})();
},
Error,
'Invalid AST: BooleanLiteral.value must be a boolean'
);
});
it('should ignore loc metadata while validating AST nodes', function() {
equal(
Handlebars.compile({
type: 'Program',
meta: null,
loc: { source: 'fake', start: { line: 1, column: 0 } },
body: [{ type: 'ContentStatement', value: 'Hello' }]
})(),
'Hello'
);
});
it('should accept AST with valid NumberLiteral values', function() {
equal(
Handlebars.compile(Handlebars.parse('{{lookup this 1}}'))(['a', 'b']),
'b'
);
});
it('should accept AST with valid BooleanLiteral values', function() {
equal(
Handlebars.compile(Handlebars.parse('{{#if true}}ok{{/if}}'))({}),
'ok'
);
});
it('can pass through an empty string', function() {
equal(Handlebars.compile('')(), '');
});
it('should not modify the options.data property(GH-1327)', function() {
var options = { data: [{ a: 'foo' }, { a: 'bar' }] };
Handlebars.compile('{{#each data}}{{@index}}:{{a}} {{/each}}', options)();
equal(
JSON.stringify(options, 0, 2),
JSON.stringify({ data: [{ a: 'foo' }, { a: 'bar' }] }, 0, 2)
);
});
it('should not modify the options.knownHelpers property(GH-1327)', function() {
var options = { knownHelpers: {} };
Handlebars.compile('{{#each data}}{{@index}}:{{a}} {{/each}}', options)();
equal(
JSON.stringify(options, 0, 2),
JSON.stringify({ knownHelpers: {} }, 0, 2)
);
});
});
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);
});
});
});
|
