These tests specifically concern error produced from the global scope,
precluding the use of the `assert.throws` helper function.

Files whose name ends in `_.js` are not themselves valid Test262 tests
and should not be interpreted as such by test runners.

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The tests for the GetBindingValue method of the module Environment
Record are very minimal. This is because GetBindingValue is necessary to
assert any aspect of binding creation/initialization/mutation. In this
way, GetBindingValue is being implicitly tested by every test that
references a binding value.