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Ejercicio 2

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perro tuerto 2023-02-13 16:54:49 -08:00
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commit 04565cb844
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.gitmodules vendored Normal file
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[submodule "solutions"]
path = solutions
url = git@github.com:kyclark/command-line-rust.git

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exercises/ex02/Cargo.toml Normal file
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[package]
name = "echor"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
clap = "2.33"
[dev-dependencies]
assert_cmd = "2"
predicates = "2"

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exercises/ex02/src/main.rs Normal file
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use clap::{App, Arg};
fn main() {
let matches = App::new("echor")
.version("0.1.0")
.author("perro <hi@perrotuerto.blog>")
.about("Rust echo")
.arg(
Arg::with_name("text")
.value_name("TEXTO")
.help("Texto de entrada")
.required(true)
.min_values(1),
)
.arg(
Arg::with_name("omit_newline")
.short("n")
.help("No imprime nueva línea")
.takes_value(false),
)
.get_matches();
// OJO: unwrap es seguro de llamar porque 'text' está forzado en tener al menos un valor
let text = matches.values_of_lossy("text").unwrap();
let ending = if matches.is_present("omit_newline") { "" } else { "\n"};
print!("{}{}", text.join(" "), ending);
}

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exercises/ex02/tests/cli.rs Normal file
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use std::fs;
use assert_cmd::Command;
use predicates::prelude::*;
type TestResult = Result<(), Box<dyn std::error::Error>>;
fn run(args: &[&str], expected_file: &str) -> TestResult {
let expected = fs::read_to_string(format!("{}{}", "tests/expected/", expected_file))?;
Command::cargo_bin("echor")?.args(args).assert().success().stdout(expected);
Ok(())
}
#[test]
fn error_no_args() -> TestResult {
let mut cmd = Command::cargo_bin("echor")?;
cmd.assert()
.failure()
.stderr(predicate::str::contains("USAGE"));
Ok(())
}
#[test]
fn runs() -> TestResult {
let mut cmd = Command::cargo_bin("echor")?;
cmd.arg("Hola").assert().success();
Ok(())
}
#[test]
fn hello1() -> TestResult {
run(&["Hello there"], "hello1.txt")
}
#[test]
fn hello2() -> TestResult {
run(&["Hello", "there"], "hello2.txt")
}
#[test]
fn hello1_no_newline() -> TestResult {
run(&["Hello there", "-n"], "hello1.n.txt")
}
#[test]
fn hello2_no_newline() -> TestResult {
run(&["-n", "Hello", "there"], "hello2.n.txt")
}

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exercises/ex02/tests/expected/hello1.n.txt Normal file
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Hello there

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exercises/ex02/tests/expected/hello1.txt Normal file
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Hello there

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exercises/ex02/tests/expected/hello2.n.txt Normal file
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Hello there

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exercises/ex02/tests/expected/hello2.txt Normal file
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Hello there

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solutions Submodule

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Subproject commit e977e5b1412bb3cd20737465d61f0baca05536d3