waterline-utils
Version:
Various utilities for working with Waterline queries and adapters.
330 lines (314 loc) • 9.54 kB
JavaScript
var Analyzer = require('../../../index').query.analyzer;
var tokenize = require('../../support/tokenize');
var assert = require('assert');
describe('Analyzer ::', function() {
describe('Subqueries', function() {
describe('used as a predicate', function() {
it('should generate a valid group for an IN subquery', function() {
var tokens = tokenize({
select: ['*'],
where: {
and: [
{
id: {
in: {
select: ['id'],
from: 'users',
where: {
or: [
{ status: 'active' },
{ name: 'John' }
]
}
}
}
}
]
},
from: 'accounts'
});
var result = Analyzer(tokens);
assert.deepEqual(result, [
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: '*' }
],
[
{ type: 'IDENTIFIER', value: 'WHERE' },
{ type: 'CONDITION', value: 'AND' },
[
{ type: 'KEY', value: 'id' },
{ type: 'CONDITION', value: 'IN' },
{ type: 'SUBQUERY', value: null },
[
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'id' }
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'VALUE', value: 'users' }
],
[
{ type: 'IDENTIFIER', value: 'WHERE' },
[
{ type: 'KEY', value: 'status' },
{ type: 'VALUE', value: 'active' }
],
[
{ type: 'KEY', value: 'name' },
{ type: 'VALUE', value: 'John' }
]
]
]
]
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'VALUE', value: 'accounts' }
]
]);
});
it('should generate a valid group for a NOT IN subquery', function() {
var tokens = tokenize({
select: ['*'],
from: 'accounts',
where: {
and: [
{
id: {
nin: {
select: ['id'],
from: 'users',
where: {
or: [
{ status: 'active' },
{ name: 'John' }
]
}
}
}
}
]
}
});
var result = Analyzer(tokens);
assert.deepEqual(result, [
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: '*' }
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'VALUE', value: 'accounts' }
],
[
{ type: 'IDENTIFIER', value: 'WHERE' },
{ type: 'CONDITION', value: 'AND' },
[
{ type: 'KEY', value: 'id' },
{ type: 'CONDITION', value: 'NOTIN' },
{ type: 'SUBQUERY', value: null },
[
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'id' }
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'VALUE', value: 'users' }
],
[
{ type: 'IDENTIFIER', value: 'WHERE' },
[
{ type: 'KEY', value: 'status' },
{ type: 'VALUE', value: 'active' }
],
[
{ type: 'KEY', value: 'name' },
{ type: 'VALUE', value: 'John' }
]
]
]
]
]
]);
});
});
describe('used as scalar values', function() {
it('should generate a valid group when used inside a SELECT', function() {
var tokens = tokenize({
select: ['name', {
select: ['username'],
from: 'users',
where: {
or: [
{ status: 'active' },
{ name: 'John' }
]
},
as: 'username'
}, 'age'],
from: 'accounts'
});
var result = Analyzer(tokens);
assert.deepEqual(result, [
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'name' }
],
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'SUBQUERY', value: null },
[
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'username' }
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'VALUE', value: 'users' }
],
[
{ type: 'IDENTIFIER', value: 'WHERE' },
[
{ type: 'KEY', value: 'status' },
{ type: 'VALUE', value: 'active' }
],
[
{ type: 'KEY', value: 'name' },
{ type: 'VALUE', value: 'John' }
]
],
[
{ type: 'IDENTIFIER', value: 'AS' },
{ type: 'VALUE', value: 'username' }
]
]
],
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'age' }
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'VALUE', value: 'accounts' }
]
]);
});
it('should generate a valid group when used as a value in a WHERE', function() {
var tokens = tokenize({
select: ['name', 'age'],
from: 'accounts',
where: {
and: [
{
username: {
select: ['username'],
from: 'users',
where: {
color: 'accounts.color'
}
}
}
]
}
});
var result = Analyzer(tokens);
assert.deepEqual(result, [
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'name' }
],
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'age' }
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'VALUE', value: 'accounts' }
],
[
{ type: 'IDENTIFIER', value: 'WHERE' },
{ type: 'CONDITION', value: 'AND' },
[
{ type: 'KEY', value: 'username' },
{ type: 'SUBQUERY', value: null },
[
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'username' }
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'VALUE', value: 'users' }
],
[
{ type: 'IDENTIFIER', value: 'WHERE' },
{ type: 'KEY', value: 'color' },
{ type: 'VALUE', value: 'accounts.color' }
]
]
]
]
]);
});
});
describe('used as table sub query', function() {
it('should generate a valid group when used as a value in a FROM with an AS alias', function() {
var tokens = tokenize({
select: ['name', 'age'],
from: {
select: ['age'],
from: 'users',
where: {
and: [
{
age: 21
}
]
},
as: 'userage'
}
});
var result = Analyzer(tokens);
assert.deepEqual(result, [
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'name' }
],
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'age' }
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'SUBQUERY', value: null },
[
[
{ type: 'IDENTIFIER', value: 'SELECT' },
{ type: 'VALUE', value: 'age' }
],
[
{ type: 'IDENTIFIER', value: 'FROM' },
{ type: 'VALUE', value: 'users' }
],
[
{ type: 'IDENTIFIER', value: 'WHERE' },
{ type: 'CONDITION', value: 'AND' },
[
{ type: 'KEY', value: 'age' },
{ type: 'VALUE', value: 21 }
]
],
[
{ type: 'IDENTIFIER', value: 'AS' },
{ type: 'VALUE', value: 'userage' }
]
]
]
]);
});
});
});
});