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27 lines
837 B
27 lines
837 B
'use strict';
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require('../common');
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const assert = require('assert');
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const vm = require('vm');
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const ctx = vm.createContext();
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// Test strict mode inside a vm script, i.e., using an undefined variable
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// throws a ReferenceError. Also check that variables
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// that are not successfully set in the vm, must not be set
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// on the sandboxed context.
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vm.runInContext('w = 1;', ctx);
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assert.strictEqual(1, ctx.w);
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assert.throws(function() { vm.runInContext('"use strict"; x = 1;', ctx); },
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/ReferenceError: x is not defined/);
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assert.strictEqual(undefined, ctx.x);
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vm.runInContext('"use strict"; var y = 1;', ctx);
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assert.strictEqual(1, ctx.y);
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vm.runInContext('"use strict"; this.z = 1;', ctx);
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assert.strictEqual(1, ctx.z);
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// w has been defined
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vm.runInContext('"use strict"; w = 2;', ctx);
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assert.strictEqual(2, ctx.w);
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