diff options
Diffstat (limited to 'js/xpconnect/tests/unit/test_envChain_subscript.js')
-rw-r--r-- | js/xpconnect/tests/unit/test_envChain_subscript.js | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_envChain_subscript.js b/js/xpconnect/tests/unit/test_envChain_subscript.js new file mode 100644 index 0000000000..e7774d0d0d --- /dev/null +++ b/js/xpconnect/tests/unit/test_envChain_subscript.js @@ -0,0 +1,72 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +"use strict"; + +// Verify the environment chain for subscripts described in +// js/src/vm/EnvironmentObject.h. + +add_task(async function() { + const target = {}; + Services.scriptloader.loadSubScript(`data:, +var qualified = 10; +unqualified = 20; +let lexical = 30; +this.prop = 40; + +const funcs = Cu.getJSTestingFunctions(); +const envs = []; +let env = funcs.getInnerMostEnvironmentObject(); +while (env) { + envs.push({ + type: funcs.getEnvironmentObjectType(env) || "*global*", + qualified: !!Object.getOwnPropertyDescriptor(env, "qualified"), + unqualified: !!Object.getOwnPropertyDescriptor(env, "unqualified"), + lexical: !!Object.getOwnPropertyDescriptor(env, "lexical"), + prop: !!Object.getOwnPropertyDescriptor(env, "prop"), + }); + + env = funcs.getEnclosingEnvironmentObject(env); +} + +this.ENVS = envs; +`, target); + + const envs = target.ENVS; + + Assert.equal(envs.length, 4); + + let i = 0, env; + + env = envs[i]; i++; + Assert.equal(env.type, "NonSyntacticLexicalEnvironmentObject"); + Assert.equal(env.qualified, false); + Assert.equal(env.unqualified, false); + Assert.equal(env.lexical, true, "lexical must live in the NSLEO"); + Assert.equal(env.prop, false); + + env = envs[i]; i++; + Assert.equal(env.type, "WithEnvironmentObject"); + Assert.equal(env.qualified, true, "qualified var must live in the with env"); + Assert.equal(env.unqualified, false); + Assert.equal(env.lexical, false); + Assert.equal(env.prop, true, "this property must live in the with env"); + + env = envs[i]; i++; + Assert.equal(env.type, "GlobalLexicalEnvironmentObject"); + Assert.equal(env.qualified, false); + Assert.equal(env.unqualified, false); + Assert.equal(env.lexical, false); + Assert.equal(env.prop, false); + + env = envs[i]; i++; + Assert.equal(env.type, "*global*"); + Assert.equal(env.qualified, false); + Assert.equal(env.unqualified, true, "unqualified var must live in the global"); + Assert.equal(env.lexical, false); + Assert.equal(env.prop, false); + + Assert.equal(target.qualified, 10, "qualified var must be reflected to the target object"); + Assert.equal(target.prop, 40, "this property must be reflected to the target object"); +}); |