34 lines
949 B
Rust
34 lines
949 B
Rust
// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// run-pass
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use std::ops::Deref;
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fn main() {
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if env_var("FOOBAR").as_ref().map(Deref::deref).ok() == Some("yes") {
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panic!()
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}
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let env_home: Result<String, ()> = Ok("foo-bar-baz".to_string());
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let env_home = env_home.as_ref().map(Deref::deref).ok();
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if env_home == Some("") { panic!() }
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}
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#[inline(never)]
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fn env_var(s: &str) -> Result<String, VarError> {
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Err(VarError::NotPresent)
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}
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pub enum VarError {
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NotPresent,
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NotUnicode(String),
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}
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