test/script/basic/optimistic_assignment_check_type.js

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/**
 * @test
 * @bug 8036987, 8037572
 * @summary Implement tests that checks static types in the compiled code
 * @option --optimistic-types=true
 * @run
 */

var inspect = Java.type("jdk.nashorn.test.tools.StaticTypeInspector").inspect
var a = b = 3;
var c;
var x = { a: 2, b:1, c: 7, d: -1, e: 1}
var y = { a: undefined, b: undefined}

// Testing assignment operators
//-- Global variable
print(inspect(a=c, "global int assignment to global variable"))
print(inspect(a=b, "undefined assignment to global int"))
print(inspect(a=y.a, "global int assignment to undefined"))
print(inspect(a+=b, "undefined addition assignment to global int"))
print(inspect(b=b+b, "global int addition global int"))
print(inspect(b+= y.a, "global int addition assignment undefined"))
//--Local variable
print(inspect(x.a+= y.a, "local int addition assignment local undefined"))
print(inspect(x.b=y.a, "local int assignment to undefined"))
print(inspect(y.a+=y.a, "local undefined addition assignment local undefined"))
print(inspect(x.c-=x.d, "local int substraction assignment local int"))
print(inspect(x.c*=x.d, "local int multiplication assignment local int"))
print(inspect(x.c/=x.d, "local int division assignment local int"))
print(inspect(y.b=x.c, "local undefined assignment to local int"))
print(inspect(y.c=x.c, "local boolean assignment to local int"))