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Fix integration tests

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Introduce the `assert_cli` crate which is a more robust way of testing
the binary. Tests also look much cleaner.

Thanks @anderejd for suggesting that crate!
This commit is contained in:
Danilo Bargen 2017-12-23 00:03:33 +01:00
commit 336bd60ee5
3 changed files with 333 additions and 94 deletions
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297
Cargo.lock generated
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@ -1,22 +1,3 @@
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1
Cargo.toml
View file

@ -32,3 +32,4 @@ env_logger = { version = "^0.3", optional = true }
[dev-dependencies]
tempdir = "^0.3"
assert_cli = "^0.5"

125
tests/lib.rs
View file

@ -1,116 +1,95 @@
//! Integration tests.
extern crate assert_cli;
extern crate tempdir;
use std::env;
use std::fs::File;
use std::io::{Read, BufReader};
use std::path::PathBuf;
use std::process::Command;
use std::io::Write;
use assert_cli::{Assert, Environment};
use tempdir::TempDir;
struct TestEnv {
cache_dir: TempDir,
bin_path: PathBuf,
pub tests_path: PathBuf,
pub cache_dir: TempDir,
pub input_dir: TempDir,
}
impl TestEnv {
fn new() -> Self {
// Initialize tempdir for cache
let dir = TempDir::new(".tldr.test").unwrap();
// Determine binary path
let lib_path = env::current_exe().unwrap();
let bin_dir = lib_path.parent().unwrap();
let bin_path = bin_dir.join("tldr");
// Copy test files
let tests_path = bin_dir.parent()
.and_then(|d| d.parent())
.map(|d| d.join("tests"))
.expect("Could not find tests directory path");
TestEnv {
cache_dir: dir,
bin_path: bin_path,
tests_path: tests_path,
}
let cache_dir = TempDir::new(".tldr.test.cache").unwrap();
let input_dir = TempDir::new(".tldr.test.input").unwrap();
TestEnv { cache_dir, input_dir }
}
/// Return a new Command instance with the base binary and env vars set.
fn cmd(&self) -> Command {
let mut cmd = Command::new(&self.bin_path);
cmd.env("TEALDEER_CACHE_DIR", self.cache_dir.path());
cmd
/// Return a new [`Assert`](../assert_cli/struct.Assert.html) instance for
/// the main binary with env vars set.
fn assert(&self) -> Assert {
let env = Environment::inherit()
.insert("TEALDEER_CACHE_DIR", self.cache_dir.path().to_str().unwrap());
Assert::main_binary()
.with_env(env)
}
}
#[test]
fn test_missing_cache() {
let testenv = TestEnv::new();
let out = testenv.cmd()
.arg("sl")
.output()
.expect(&format!("Could not launch tldr binary ({:?})", &testenv.bin_path));
assert_eq!(out.status.success(), false);
let stdout = String::from_utf8(out.stdout).unwrap();
assert_eq!(stdout, "Cache not found. Please run `tldr --update`.\n");
TestEnv::new()
.assert()
.with_args(&["sl"])
.fails()
.stdout().contains("Cache not found. Please run `tldr --update`.")
.unwrap();
}
#[test]
fn test_update_cache() {
let testenv = TestEnv::new();
let out1 = testenv.cmd()
.arg("sl")
.output()
.expect(&format!("Could not launch tldr binary ({:?})", &testenv.bin_path));
assert_eq!(out1.status.success(), false);
testenv.assert()
.with_args(&["sl"])
.fails()
.stdout().contains("Cache not found. Please run `tldr --update`.")
.unwrap();
let out2 = testenv.cmd()
.arg("--update")
.output()
.expect(&format!("Could not launch tldr binary ({:?})", &testenv.bin_path));
let stdout = String::from_utf8(out2.stdout).unwrap();
println!("{}", stdout);
assert_eq!(out2.status.success(), true);
assert_eq!(stdout, "Successfully updated cache.\n");
testenv.assert()
.with_args(&["--update"])
.succeeds()
.stdout().contains("Successfully updated cache.")
.unwrap();
let out3 = testenv.cmd()
.arg("sl")
.output()
.expect(&format!("Could not launch tldr binary ({:?})", &testenv.bin_path));
assert_eq!(out3.status.success(), true);
testenv.assert()
.with_args(&["sl"])
.succeeds()
.unwrap();
}
fn _test_correct_rendering(filename: &str) {
fn _test_correct_rendering(input_file: &str, filename: &str) {
let testenv = TestEnv::new();
let testfile = testenv.tests_path.join(filename);
let testfile_expected = testenv.tests_path.join("inkscape.expected");
let out: Vec<u8> = testenv.cmd()
.arg("-f").arg(testfile)
.output()
.expect(&format!("Could not launch tldr binary ({:?})", &testenv.bin_path))
.stdout;
// Create input file
let file_path = testenv.input_dir.path().join(filename);
println!("Testfile path: {:?}", &file_path);
let mut file = File::create(&file_path).unwrap();
file.write_all(input_file.as_bytes()).unwrap();
let mut expected = Vec::<u8>::new();
BufReader::new(File::open(testfile_expected).unwrap()).read_to_end(&mut expected).unwrap();
// Load expected output
let expected = include_str!("inkscape.expected");
assert_eq!(out, expected);
testenv.assert()
.with_args(&["-f", &file_path.to_str().unwrap()])
.succeeds()
.stdout().is(expected)
.unwrap();
}
/// An end-to-end integration test for direct file rendering.
/// An end-to-end integration test for direct file rendering (v1 syntax).
#[test]
fn test_correct_rendering_v1() {
_test_correct_rendering("inkscape-v1.md");
_test_correct_rendering(include_str!("inkscape-v1.md"), "inkscape-v1.md");
}
/// An end-to-end integration test for direct file rendering.
/// An end-to-end integration test for direct file rendering (v2 syntax).
#[test]
fn test_correct_rendering_v2() {
_test_correct_rendering("inkscape-v2.md");
_test_correct_rendering(include_str!("inkscape-v2.md"), "inkscape-v2.md");
}