From 26d5be6d15ab320464f6c91e655d7d1ebb33b897 Mon Sep 17 00:00:00 2001
From: Matt Kantor <the.matt.kantor@gmail.com>
Date: Sat, 5 Dec 2020 14:55:06 -0800
Subject: [PATCH] Improve an error message for snapshot tests.

---
 tests/lib/mod.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/tests/lib/mod.rs b/tests/lib/mod.rs
index e9e3e21..a46bd7a 100644
--- a/tests/lib/mod.rs
+++ b/tests/lib/mod.rs
@@ -13,6 +13,7 @@ use std::env;
 use std::ffi::OsStr;
 use std::hash::Hasher;
 use std::net::SocketAddr;
+use std::path::Path;
 use std::process::{Child, Command, Output, Stdio};
 use std::str;
 use std::thread;
@@ -251,14 +252,20 @@ async fn render_multiple_ways_for_snapshots(
                         // behavior of the get command and HTTP request is
                         // different enough to be considered a bug.
                         else {
+                            let sample_name = content_directory
+                                .root()
+                                .strip_prefix(sample_path("."))
+                                .unwrap_or(Path::new("unknown"))
+                                .display();
                             panic!(
-                                "Rendering {} as {} produced different results when done via server and get command!\n    \
+                                "Rendering {} from {} as {} produced different results when done via server and get command!\n    \
                                 get command exit code: {}\n    \
                                 get command stdout: {}\n    \
                                 get command stderr: {}\n    \
                                 HTTP status code: {}\n    \
                                 HTTP response body: {}\n",
                                 route,
+                                sample_name,
                                 accept,
                                 get_command_output.status,
                                 if get_command_output.stdout.len() > 64 {