From b3f87b903ab54190e1a4d1efe9b9dd87fab4ab3c Mon Sep 17 00:00:00 2001
From: "Felix S. Klock II" <pnkfelix@pnkfx.org>
Date: Sat, 7 Feb 2015 13:05:41 +0100
Subject: Make the test driver script a little more informative.

Namely, have it do a couple attempts to check if basic dependencies
are satisfied before jumping whole hog into the test script, and
provide a message pointing out the ERT dependency in particular.
---
 run_rust_emacs_tests.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/run_rust_emacs_tests.sh b/run_rust_emacs_tests.sh
index dc4458f..c9c2e40 100755
--- a/run_rust_emacs_tests.sh
+++ b/run_rust_emacs_tests.sh
@@ -19,4 +19,14 @@ elif [ ! $(which "$EMACS") ]; then
    exit 1
 fi
 
+$( "$EMACS" -batch > /dev/null 2>&1 ) || {
+    echo "Your emacs command ($EMACS) does not run properly."
+    exit 2
+};
+
+$( "$EMACS" -batch --eval "(require 'ert)" > /dev/null 2>&1 ) || {
+    echo 'You must install the `ert` dependency; see README.md'
+    exit 3
+};
+
 "$EMACS" -batch -l rust-mode.el -l rust-mode-tests.el -f ert-run-tests-batch-and-exit
-- 
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