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/// just some api ideas | |
#[test] | |
fn config_loading() { | |
let fs = MockFS::new() | |
.file("/usr/local/etc/foo", "fancy = 10") | |
.file("~/.config/foo", "fancy = 20") | |
.file(".env", "LE_PREFIX_FANCY=30"); | |
#[derive(Default, Configure, StructOpt)] | |
struct Args { | |
fancy: i32, | |
} | |
let args = Args::config() | |
.config_source(ConfigSource::toml().with_mock_fs(fs)) | |
.config_source(ConfigSource::dot_env("LE_PREFIX")) | |
.config_source(ConfigSource::env("LE_PREFIX")); | |
assert_eq!(args.clone().load(), Args { fancy: 30 }); | |
std::env::set_var("LE_PREFIX_FANCY", "40"); | |
assert_eq!(args.clone().load(), Args { fancy: 40 }); | |
let args = args.clone() | |
.config_source(ConfigSource::structopt() | |
.handle_help_and_version() | |
.with_mock_args(&["--fancy=50"]) | |
); | |
assert_eq!(args.clone().load(), Args { fancy: 50 }); | |
} |
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