Make test outputs identical on all platforms

Cargo.lock

@@ -613,6 +613,7 @@ dependencies = [
  "console",
  "lazy_static",
  "linked-hash-map",
+ "regex",
  "similar",
  "yaml-rust",
 ]
@@ -842,6 +843,7 @@ dependencies = [
  "proptest",
  "rand",
  "rayon",
+ "regex",
  "same-file",
  "sevenz-rust",
  "snap",

Cargo.toml

@@ -47,10 +47,11 @@ clap_mangen = "0.2.15"
 [dev-dependencies]
 assert_cmd = "2.0.12"
 infer = "0.15.0"
-insta = "1.34.0"
+insta = { version = "1.34.0", features = ["filters"] }
 parse-display = "0.8.2"
 proptest = "1.4.0"
 rand = { version = "0.8.5", default-features = false, features = ["small_rng", "std"] }
+regex = "1.10.2"
 test-strategy = "0.3.1"
 
 [features]

tests/snapshots/ui__ui_test_err_decompress_missing_extension-2.snap

@@ -3,8 +3,8 @@ source: tests/ui.rs
 expression: "run_ouch(\"ouch decompress a b.unknown\", dir)"
 ---
 [ERROR] Cannot decompress files
- - Files with unsupported extensions: <FOLDER>/b.unknown
- - Files with missing extensions: <FOLDER>/a
+ - Files with unsupported extensions: <TMP_DIR>/b.unknown
+ - Files with missing extensions: <TMP_DIR>/a
  - Decompression formats are detected automatically from file extension
 
 hint: Supported extensions are: tar, zip, bz, bz2, gz, lz4, xz, lzma, sz, zst, rar

tests/snapshots/ui__ui_test_err_decompress_missing_extension-3.snap

@@ -3,12 +3,12 @@ source: tests/ui.rs
 expression: "run_ouch(\"ouch decompress b.unknown\", dir)"
 ---
 [ERROR] Cannot decompress files
- - Files with unsupported extensions: <FOLDER>/b.unknown
+ - Files with unsupported extensions: <TMP_DIR>/b.unknown
  - Decompression formats are detected automatically from file extension
 
 hint: Supported extensions are: tar, zip, bz, bz2, gz, lz4, xz, lzma, sz, zst, rar
 hint: Supported aliases are: tgz, tbz, tlz4, txz, tzlma, tsz, tzst
 hint: 
 hint: Alternatively, you can pass an extension to the '--format' flag:
-hint:   ouch decompress <FOLDER>/b.unknown --format tar.gz
+hint:   ouch decompress <TMP_DIR>/b.unknown --format tar.gz
 

tests/snapshots/ui__ui_test_err_decompress_missing_extension.snap

@@ -3,12 +3,12 @@ source: tests/ui.rs
 expression: "run_ouch(\"ouch decompress a\", dir)"
 ---
 [ERROR] Cannot decompress files
- - Files with missing extensions: <FOLDER>/a
+ - Files with missing extensions: <TMP_DIR>/a
  - Decompression formats are detected automatically from file extension
 
 hint: Supported extensions are: tar, zip, bz, bz2, gz, lz4, xz, lzma, sz, zst, rar
 hint: Supported aliases are: tgz, tbz, tlz4, txz, tzlma, tsz, tzst
 hint: 
 hint: Alternatively, you can pass an extension to the '--format' flag:
-hint:   ouch decompress <FOLDER>/a --format tar.gz
+hint:   ouch decompress <TMP_DIR>/a --format tar.gz
 

tests/snapshots/ui__ui_test_usage_help_flag-2.snap

@@ -4,7 +4,7 @@ expression: "output_to_string(ouch!(\"-h\"))"
 ---
 A command-line utility for easily compressing and decompressing files and directories.
 
-Usage: ouch [OPTIONS] <COMMAND>
+Usage: <OUCH_BIN> [OPTIONS] <COMMAND>
 
 Commands:
   compress    Compress one or more files into one output file [aliases: c]

tests/snapshots/ui__ui_test_usage_help_flag.snap

@@ -8,7 +8,7 @@ Supported formats: tar, zip, gz, 7z, xz/lzma, bz/bz2, lz4, sz (Snappy), zst and
 
 Repository: https://github.com/ouch-org/ouch
 
-Usage: ouch [OPTIONS] <COMMAND>
+Usage: <OUCH_BIN> [OPTIONS] <COMMAND>
 
 Commands:
   compress    Compress one or more files into one output file [aliases: c]

tests/ui.rs

@@ -6,9 +6,10 @@
 #[macro_use]
 mod utils;
 
-use std::{io, path::Path, process::Output};
+use std::{ffi::OsStr, io, path::Path, process::Output};
 
 use insta::assert_display_snapshot as ui;
+use regex::Regex;
 
 use crate::utils::run_in;
 
@@ -35,18 +36,13 @@ fn run_ouch(argv: &str, dir: &Path) -> String {
     redact_paths(&output_to_string(output), dir)
 }
 
-// remove random tempdir paths from snapshots to make them deterministic
-fn redact_paths(text: &str, path: &Path) -> String {
-    let redacted = "<FOLDER>";
+/// Remove random tempdir paths from snapshots to make them deterministic.
+fn redact_paths(text: &str, dir: &Path) -> String {
+    let dir_name = dir.file_name().and_then(OsStr::to_str).unwrap();
 
-    let path = path.display();
-    let path = if cfg!(target_os = "macos") {
-        format!(r"/private{path}")
-    } else {
-        path.to_string()
-    };
-
-    text.replace(path.as_str(), redacted)
+    // this regex should be good as long as the path does not contain whitespace characters
+    let re = Regex::new(&format!(r"\S*[/\\]{dir_name}[/\\]")).unwrap();
+    re.replace_all(text, "<TMP_DIR>/").into()
 }
 
 fn output_to_string(output: Output) -> String {
@@ -107,6 +103,11 @@ fn ui_test_ok_decompress() {
 
 #[test]
 fn ui_test_usage_help_flag() {
-    ui!(output_to_string(ouch!("--help")));
-    ui!(output_to_string(ouch!("-h")));
+    insta::with_settings!({filters => vec![
+        // binary name is `ouch.exe` on Windows and `ouch` on everywhere else
+        (r"(Usage:.*\b)ouch(\.exe)?\b", "${1}<OUCH_BIN>"),
+    ]}, {
+        ui!(output_to_string(ouch!("--help")));
+        ui!(output_to_string(ouch!("-h")));
+    });
 }