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@ -1,16 +1,29 @@
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use std::env;
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use std::fs::{self, File};
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use std::io::Read;
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use std::path::PathBuf;
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use std::io::{self, Read};
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use std::path::{Path, PathBuf};
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use std::process::Command;
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extern crate tempdir;
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use self::tempdir::TempDir;
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extern crate git2;
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use self::git2::build::CheckoutBuilder;
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use self::git2::Error;
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use self::git2::Repository;
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use self::git2::Signature;
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pub struct BatTester {
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/// Temporary working directory
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temp_dir: TempDir,
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/// Path to the *bat* executable
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exe: PathBuf,
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}
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impl BatTester {
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pub fn new() -> Self {
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modify_sample_file();
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let temp_dir = create_sample_directory().expect("sample directory");
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let root = env::current_exe()
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.expect("tests executable")
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@ -21,17 +34,18 @@ impl BatTester {
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.to_path_buf();
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let exe_name = if cfg!(windows) { "bat.exe" } else { "bat" };
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let exe = root.join(exe_name);
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BatTester {
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exe: root.join(exe_name),
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}
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BatTester { temp_dir, exe }
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}
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pub fn test_snapshot(&self, style: &str) {
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let output = Command::new(&self.exe)
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.args(&["tests/snapshots/sample.rs", &format!("--style={}", style)])
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.current_dir(self.temp_dir.path())
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.args(&["sample.rs", &format!("--style={}", style)])
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.output()
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.expect("bat failed");
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// have to do the replace because the filename in the header changes based on the current working directory
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let actual = String::from_utf8_lossy(&output.stdout)
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.as_ref()
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@ -47,26 +61,35 @@ impl BatTester {
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}
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}
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impl Drop for BatTester {
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fn drop(&mut self) {
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undo_sample_file_modification();
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}
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}
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fn create_sample_directory() -> Result<TempDir, git2::Error> {
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// Create temp directory and initialize repository
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let temp_dir = TempDir::new("bat-tests").expect("Temp directory");
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let repo = Repository::init(&temp_dir)?;
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fn modify_sample_file() {
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fs::copy(
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"tests/snapshots/sample.modified.rs",
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"tests/snapshots/sample.rs",
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).expect("generating modified sample file failed");
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}
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// Copy over `sample.rs`
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let sample_path = temp_dir.path().join("sample.rs");
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println!("{:?}", &sample_path);
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fs::copy("tests/snapshots/sample.rs", &sample_path).expect("successful copy");
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fn undo_sample_file_modification() {
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let output = Command::new("git")
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.args(&["checkout", "--", "tests/snapshots/sample.rs"])
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.output()
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.expect("git checkout failed");
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// Commit
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let mut index = repo.index()?;
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index.add_path(Path::new("sample.rs"))?;
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if !output.status.success() {
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panic!("undoing modified sample changes failed")
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}
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let oid = index.write_tree()?;
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let signature = Signature::now("bat test runner", "bat@test.runner")?;
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let tree = repo.find_tree(oid)?;
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repo.commit(
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Some("HEAD"), // point HEAD to our new commit
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&signature, // author
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&signature, // committer
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"initial commit",
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&tree,
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&[],
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);
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let mut opts = CheckoutBuilder::new();
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repo.checkout_head(Some(opts.force()))?;
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fs::copy("tests/snapshots/sample.modified.rs", &sample_path).expect("successful copy");
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Ok(temp_dir)
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}
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