- jsi = JSInterpreter('''
- function x() { return undefined === undefined; }
- ''')
- self.assertEqual(jsi.call_function('x'), True)
-
- jsi = JSInterpreter('''
- function x() { return undefined; }
- ''')
- self.assertEqual(jsi.call_function('x'), JS_Undefined)
-
- jsi = JSInterpreter('''
- function x() { let v; return v; }
- ''')
- self.assertEqual(jsi.call_function('x'), JS_Undefined)
-
- jsi = JSInterpreter('''
- function x() { return [undefined === undefined, undefined == undefined, undefined < undefined, undefined > undefined]; }
- ''')
- self.assertEqual(jsi.call_function('x'), [True, True, False, False])
-
- jsi = JSInterpreter('''
- function x() { return [undefined === 0, undefined == 0, undefined < 0, undefined > 0]; }
- ''')
- self.assertEqual(jsi.call_function('x'), [False, False, False, False])
-
- jsi = JSInterpreter('''
- function x() { return [undefined >= 0, undefined <= 0]; }
- ''')
- self.assertEqual(jsi.call_function('x'), [False, False])
-
- jsi = JSInterpreter('''
- function x() { return [undefined > null, undefined < null, undefined == null, undefined === null]; }
- ''')
- self.assertEqual(jsi.call_function('x'), [False, False, True, False])
-
- jsi = JSInterpreter('''
- function x() { return [undefined === null, undefined == null, undefined < null, undefined > null]; }
- ''')
- self.assertEqual(jsi.call_function('x'), [False, True, False, False])
-
- jsi = JSInterpreter('''
- function x() { let v; return [42+v, v+42, v**42, 42**v, 0**v]; }
- ''')
- for y in jsi.call_function('x'):
+ self._test('function f() { return undefined === undefined; }', True)
+ self._test('function f() { return undefined; }', JS_Undefined)
+ self._test('function f() {return undefined ?? 42; }', 42)
+ self._test('function f() { let v; return v; }', JS_Undefined)
+ self._test('function f() { let v; return v**0; }', 1)
+ self._test('function f() { let v; return [v>42, v<=42, v&&42, 42&&v]; }',
+ [False, False, JS_Undefined, JS_Undefined])
+
+ self._test('''
+ function f() { return [
+ undefined === undefined,
+ undefined == undefined,
+ undefined == null,
+ undefined < undefined,
+ undefined > undefined,
+ undefined === 0,
+ undefined == 0,
+ undefined < 0,
+ undefined > 0,
+ undefined >= 0,
+ undefined <= 0,
+ undefined > null,
+ undefined < null,
+ undefined === null
+ ]; }
+ ''', list(map(bool, (1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0))))
+
+ jsi = JSInterpreter('''
+ function f() { let v; return [42+v, v+42, v**42, 42**v, 0**v]; }
+ ''')
+ for y in jsi.call_function('f'):