exports[`test array.js 1`] = `
"/* @flow */

var arrayTest1: Iterable<number> = ([1, 2]: Array<number>);
var arrayTest2: Iterable<number | string> = [1,2,\"hi\"];
var arrayTest3: Iterable<*> = [1,2,3];

// Error string ~> number
var arrayTest4: Iterable<number> = [\"hi\"];
// Error string ~> number
var arrayTest5: Iterable<string> = [\"hi\", 1];
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/* @flow */

var arrayTest1: Iterable<number> = ([ 1, 2 ]: Array<number>);
var arrayTest2: Iterable<number | string> = [ 1, 2, \"hi\" ];
var arrayTest3: Iterable<*> = [ 1, 2, 3 ];

// Error string ~> number
var arrayTest4: Iterable<number> = [ \"hi\" ];
// Error string ~> number
var arrayTest5: Iterable<string> = [ \"hi\", 1 ];
"
`;

exports[`test caching_bug.js 1`] = `
"/* @flow */

/**
 * I\'ve hit a bug with the caching in flow_js.ml. Avik is removing that caching
 * so it should be fixed soon. The basic idea is I flow something like
 *
 * Array<any | any> ~> Iterable<string>
 *
 * then Flow won\'t notice when I try to flow
 *
 * Array<string | number> ~> Iterable<string>
 *
 * We shouldn\'t hit the cache because the union types are different, but we do
 * anyway. I\'ve fixed this temporarily by bumping the \"meaningful\" param to
 * Hashtbl.hash_param
 */

function fill_the_cache(x: Array<any | any>): Iterable<string> { return x; }

// Error: number ~> string
function miss_the_cache(x: Array<string | number>): Iterable<string> { return x; }
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/* @flow */

/**
 * I\'ve hit a bug with the caching in flow_js.ml. Avik is removing that caching
 * so it should be fixed soon. The basic idea is I flow something like
 *
 * Array<any | any> ~> Iterable<string>
 *
 * then Flow won\'t notice when I try to flow
 *
 * Array<string | number> ~> Iterable<string>
 *
 * We shouldn\'t hit the cache because the union types are different, but we do
 * anyway. I\'ve fixed this temporarily by bumping the \"meaningful\" param to
 * Hashtbl.hash_param
 */

function fill_the_cache(x: Array<any | any>): Iterable<string> {
  return x;
}

// Error: number ~> string
function miss_the_cache(x: Array<string | number>): Iterable<string> {
  return x;
}
"
`;

exports[`test iter.js 1`] = `
"/* @flow */

function foo(strs: Iterable<string>): void {
  for (var s: string of strs) {
    console.log(s);
  }
}

var m: Map<string, number> = new Map();

foo(m.keys());
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/* @flow */

function foo(strs: Iterable<string>): void {
  for (var s: string of strs) {
    console.log(s);
  }
}

var m: Map<string, number> = new Map();

foo(m.keys());
"
`;

exports[`test iterator_result.js 1`] = `
"/* @flow */

function makeIterator(coin_flip: () => boolean ): Iterator<string> {
  return {
    \"@@iterator\"() { return makeIterator(coin_flip); },
    next(): IteratorResult<string, void> {
      var done = coin_flip();
      if (!done) {
        return { done, value: \"still going...\" };
      } else {
        return { done };
      }
    }
  }
}

function makeIterator(coin_flip: () => boolean ): Iterator<string> {
  return {
    \"@@iterator\"() { return makeIterator(coin_flip); },
    next(): IteratorResult<string, void> {
      var done = coin_flip();
      if (done) { // Whoops, made a mistake and forgot to negate done
        return { done, value: \"still going...\" }; // Error string ~> void
      } else {
        return { done }; // Error void ~> string
      }
    }
  }
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/* @flow */

function makeIterator(coin_flip: () => boolean): Iterator<string> {
  return {
    \"@@iterator\"() {
      return makeIterator(coin_flip);
    },
    next(): IteratorResult<string, void> {
      var done = coin_flip();
      if (!done) {
        return { done, value: \"still going...\" };
      } else {
        return { done };
      }
    }
  };
}

function makeIterator(coin_flip: () => boolean): Iterator<string> {
  return {
    \"@@iterator\"() {
      return makeIterator(coin_flip);
    },
    next(): IteratorResult<string, void> {
      var done = coin_flip();
      if (done) {
        // Whoops, made a mistake and forgot to negate done
        return { done, value: \"still going...\" }; // Error string ~> void
      } else {
        return { done }; // Error void ~> string
      }
    }
  };
}
"
`;

exports[`test map.js 1`] = `
"/* @flow */

function mapTest1(map: Map<string, number>): Iterable<[string, number]> {
  return map;
}
function mapTest2<K, V>(map: Map<K, V>): Iterable<[K, V]> {
  return map;
};
function mapTest3(map: Map<string, number>): Iterable<*> {
  return map;
}
// Error - Map is an Iterable<[K, V]>
function mapTest4(map: Map<number, string>): Iterable<string> {
  return map;
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/* @flow */

function mapTest1(map: Map<string, number>): Iterable<[string, number]> {
  return map;
}
function mapTest2<K, V>(map: Map<K, V>): Iterable<[K, V]> {
  return map;
}
function mapTest3(map: Map<string, number>): Iterable<*> {
  return map;
}
// Error - Map is an Iterable<[K, V]>
function mapTest4(map: Map<number, string>): Iterable<string> {
  return map;
}
"
`;

exports[`test set.js 1`] = `
"/* @flow */

function setTest1(set: Set<string>): Iterable<string> {
  return set;
}
function setTest2<T>(set: Set<T>): Iterable<T> {
  return set;
};
function setTest3(set: Set<string>): Iterable<*> {
  return set;
}
// Error string ~> number
function setTest4(set: Set<string>): Iterable<number> {
  return set;
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/* @flow */

function setTest1(set: Set<string>): Iterable<string> {
  return set;
}
function setTest2<T>(set: Set<T>): Iterable<T> {
  return set;
}
function setTest3(set: Set<string>): Iterable<*> {
  return set;
}
// Error string ~> number
function setTest4(set: Set<string>): Iterable<number> {
  return set;
}
"
`;

exports[`test string.js 1`] = `
"/* @flow */

var stringTest1: Iterable<string> = \"hi\";
var stringTest3: Iterable<*> = \"hi\";
var stringTest3: Iterable<number> = \"hi\"; // Error - string is a Iterable<string>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/* @flow */

var stringTest1: Iterable<string> = \"hi\";
var stringTest3: Iterable<*> = \"hi\";
var stringTest3: Iterable<number> = \"hi\"; // Error - string is a Iterable<string>
"
`;

exports[`test variance.js 1`] = `
"/* @flow */

(([]: Array<string>): Iterable<?string>); // ok, Iterable<+T>

(([]: Array<string>).values(): Iterable<?string>); // ok, Iterator<+T>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/* @flow */

(([]: Array<string>): Iterable<?string>);

// ok, Iterable<+T>
(([]: Array<string>).values(): Iterable<?string>); // ok, Iterator<+T>
"
`;