use assert_cmd::prelude::*; use predicates::prelude::*; use std::process::Command; use assert_fs::prelude::*;
#[test]
fn find_content_in_file() -> Result<(), Box<dyn std::error::Error>> {
let file = assert_fs::NamedTempFile::new("sample.txt")?;
file.write_str("A test\nActual content\nMore content\nAnother test")?;
let mut cmd = Command::cargo_bin("grrs")?;
cmd.arg("test").arg(file.path());
cmd.assert()
.success()
.stdout(predicate::str::contains("test\nAnother test"));
Ok(())
}
#[test]
fn file_doesnt_exist() -> Result<(), Box<dyn std::error::Error>> {
let mut cmd = Command::cargo_bin("grrs")?;
cmd.arg("foobar").arg("test/file/doesnt/exist");
cmd.assert()
.failure()
.stderr(predicate::str::contains("could not read file"));
Ok(())
}