// Verify the environment chain for Debugger.Object described in
// js/src/vm/EnvironmentObject.h.

const g = newGlobal({newCompartment: true});
const dbg = new Debugger();
const gw = dbg.addDebuggee(g);

const bindings = {
  bindings_prop: 50,

  bindings_prop_var: 61,
  bindings_prop_lexical: 71,
  bindings_prop_lexical2: 71,
  bindings_prop_unqualified: 81,
};

const {envs, vars} = JSON.parse(gw.executeInGlobalWithBindings(`
var qualified = 10;
unqualified = 20;
let lexical = 30;
this.prop = 40;

var bindings_prop_var = 60;
let bindings_prop_lexical = 70;
let bindings_prop_lexical2;
bindings_prop_lexical2 = 70;
bindings_prop_unqualified = 80;

const vars = {
  bindings_prop_var,
  bindings_prop_lexical,
  bindings_prop_lexical2,
  bindings_prop_unqualified,
};

const envs = [];
let env = getInnerMostEnvironmentObject();
while (env) {
  envs.push({
    type: getEnvironmentObjectType(env) || "*global*",
    qualified: !!Object.getOwnPropertyDescriptor(env, "qualified"),
    unqualified: !!Object.getOwnPropertyDescriptor(env, "unqualified"),
    lexical: !!Object.getOwnPropertyDescriptor(env, "lexical"),
    prop: !!Object.getOwnPropertyDescriptor(env, "prop"),
    bindings_prop: !!Object.getOwnPropertyDescriptor(env, "bindings_prop"),

    bindings_prop_var: !!Object.getOwnPropertyDescriptor(env, "bindings_prop_var"),
    bindings_prop_var_value: Object.getOwnPropertyDescriptor(env, "bindings_prop_var")?.value,
    bindings_prop_lexical: !!Object.getOwnPropertyDescriptor(env, "bindings_prop_lexical"),
    bindings_prop_lexical_value: Object.getOwnPropertyDescriptor(env, "bindings_prop_lexical")?.value,
    bindings_prop_lexical2: !!Object.getOwnPropertyDescriptor(env, "bindings_prop_lexical2"),
    bindings_prop_lexical2_value: Object.getOwnPropertyDescriptor(env, "bindings_prop_lexical2")?.value,
    bindings_prop_unqualified: !!Object.getOwnPropertyDescriptor(env, "bindings_prop_unqualified"),
    bindings_prop_unqualified_value: Object.getOwnPropertyDescriptor(env, "bindings_prop_unqualified")?.value,
  });

  env = getEnclosingEnvironmentObject(env);
}
JSON.stringify({envs, vars});
`, bindings, {
  useInnerBindings: true,
}).return);

assertEq(vars.bindings_prop_var, 60,
         "qualified var should read the value set by the declaration");
assertEq(vars.bindings_prop_lexical, 71,
         "lexical is shadowed by extra bindings");
assertEq(vars.bindings_prop_lexical2, 70,
         "lexical is shadowed by extra bindings");
assertEq(vars.bindings_prop_unqualified, 80,
         "unqualified name is shadowed by extra bindings");

assertEq(bindings.bindings_prop_var, 61,
         "the original bindings property must not be overwritten for var");
assertEq(bindings.bindings_prop_lexical, 71,
         "the original bindings property must not be overwritten for lexical");
assertEq(bindings.bindings_prop_lexical2, 71,
         "the original bindings property must not be overwritten for lexical");
assertEq(bindings.bindings_prop_unqualified, 81,
         "the original bindings property must not be overwritten for unqualified");

assertEq(envs.length, 3);

let i = 0, env;

env = envs[i]; i++;
assertEq(env.type, "WithEnvironmentObject");
assertEq(env.qualified, false);
assertEq(env.unqualified, false);
assertEq(env.lexical, false);
assertEq(env.prop, false);
assertEq(env.bindings_prop, true, "bindings property must live in the with env for bindings");

assertEq(env.bindings_prop_var, true,
         "bindings property must live in the with env for bindings");
assertEq(env.bindings_prop_lexical, true,
         "bindings property must live in the with env for bindings");
assertEq(env.bindings_prop_lexical2, true,
         "bindings property must live in the with env for bindings");
assertEq(env.bindings_prop_unqualified, true,
         "bindings property must live in the with env for bindings");
assertEq(env.bindings_prop_unqualified_value, 80,
         "bindings property must be overwritten for unqualified");

env = envs[i]; i++;
assertEq(env.type, "GlobalLexicalEnvironmentObject");
assertEq(env.qualified, false);
assertEq(env.unqualified, false);
assertEq(env.lexical, true, "lexical must live in the GlobalLexicalEnvironmentObject");
assertEq(env.prop, false);
assertEq(env.bindings_prop, false);

assertEq(env.bindings_prop_var, false);
assertEq(env.bindings_prop_lexical, true,
         "lexical must live in the GlobalLexicalEnvironmentObject even if it conflicts with the bindings object property");
assertEq(env.bindings_prop_lexical_value, 70);
assertEq(env.bindings_prop_lexical2, true,
         "lexical must live in the GlobalLexicalEnvironmentObject even if it conflicts with the bindings object property");
assertEq(env.bindings_prop_lexical2_value, undefined,
         "lexical must be shadowed");
assertEq(env.bindings_prop_unqualified, false);

env = envs[i]; i++;
assertEq(env.type, "*global*");
assertEq(env.qualified, true, "qualified var must live in the global");
assertEq(env.unqualified, true, "unqualified name must live in the global");
assertEq(env.lexical, false);
assertEq(env.prop, true, "this property must live in the global");
assertEq(env.bindings_prop, false);

assertEq(env.bindings_prop_var, true,
         "qualified var binding must be created in the global even if it conflicts with the bindings object property");
assertEq(env.bindings_prop_var_value, undefined,
         "qualified var must be shadowed");
assertEq(env.bindings_prop_lexical, false);
assertEq(env.bindings_prop_lexical2, false);
assertEq(env.bindings_prop_unqualified, false);