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84 lines
2.3 KiB
Rust
84 lines
2.3 KiB
Rust
use std::error::Error;
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use assert_cmd::Command;
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use assert_cmd::assert::Assert;
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// use assert_cmd::prelude::*;
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use std::path::Path;
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use std::fs::read_to_string;
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type TestResult = Result<(), Box<dyn Error>>;
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type AssertResult = Result<Assert, Box<dyn Error>>;
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// pub fn args<I, S>(&mut self, args: I) -> &mut Self
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// where
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// I: IntoIterator<Item = S>,
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// S: AsRef<ffi::OsStr>,
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// ────────────────────────────────────────────────
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fn run_command(test_file: &str, cmd: &mut Command) -> AssertResult
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{
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let input = Path::new(test_file);
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Ok(cmd.pipe_stdin(input)?.assert())
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}
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// empty stdin should return an empty line
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#[test]
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fn no_stdin_no_args(){
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let mut cmd = Command::cargo_bin("yargs").unwrap();
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let assert = cmd
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.write_stdin("")
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.assert();
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assert.stdout("");
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}
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// input with many columns
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// no positional arguments
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// behaves like cat
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#[test]
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fn stdin_no_args() -> TestResult {
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let input = Path::new("tests/inputs/input1");
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let mut cmd = Command::cargo_bin("yargs").unwrap();
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let assert = cmd
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.pipe_stdin(input)?
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.assert();
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assert.stdout(read_to_string(input)?);
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Ok(())
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}
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// n args <= n cols
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#[test]
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fn cli_pass2() {
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let mut cmd = Command::cargo_bin("yargs").unwrap();
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cmd.args(["-d", r"\s+"])
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.args(vec!["true"; 6]);
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run_command("tests/inputs/input1", &mut cmd).unwrap()
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.success();
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}
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// should fail if more yargs provided than detected columns
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// the input text has 7 columns, we pass 8 yargs
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// delimiter: space
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#[test]
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fn cli_fail1() {
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let mut cmd = Command::cargo_bin("yargs").unwrap();
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cmd.args(["-d", r"\s+"])
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.args(vec!["arg"; 8]);
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run_command("tests/inputs/input1", &mut cmd).unwrap()
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.failure();
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}
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// should execute yarg corresponding to column
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// first yarg transforms col to uppercase
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// second yarg reverses the text
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#[test]
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fn cli_exec_yarg() {
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let mut cmd = Command::cargo_bin("yargs").unwrap();
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cmd.args(["-d", r"\s+"])
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.args(["tr '[:lower:]' '[:upper:]'", "rev"]);
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run_command("tests/inputs/input2_spaces", &mut cmd).unwrap()
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.success()
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.stdout(read_to_string(Path::new("tests/outputs/output2_spaces")).unwrap());
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}
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