mirror of https://github.com/sharkdp/bat.git
103 lines
3.0 KiB
Rust
103 lines
3.0 KiB
Rust
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::{Path, PathBuf};
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use std::process::Command;
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use tempfile::TempDir;
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use git2::build::CheckoutBuilder;
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use git2::Repository;
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use 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 test_snapshot(&self, name: &str, style: &str) {
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let output = Command::new(&self.exe)
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.current_dir(self.temp_dir.path())
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.args([
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"sample.rs",
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"--no-config",
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"--paging=never",
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"--color=never",
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"--decorations=always",
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"--terminal-width=80",
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&format!("--style={style}"),
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])
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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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.replace("tests/snapshots/", "");
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let mut expected = String::new();
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let mut file = File::open(format!("tests/snapshots/output/{name}.snapshot.txt"))
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.expect("snapshot file missing");
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file.read_to_string(&mut expected)
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.expect("could not read snapshot file");
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assert_eq!(expected, actual);
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}
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}
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impl Default for BatTester {
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fn default() -> Self {
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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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.parent()
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.expect("tests executable directory")
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.parent()
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.expect("bat executable directory")
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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 { temp_dir, exe }
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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().expect("Temp directory");
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let repo = Repository::init(&temp_dir)?;
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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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// 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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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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let _ = 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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