From f29b24cf13ca5f141b8386614b353d75fedd71b9 Mon Sep 17 00:00:00 2001
From: Melissa Xie <melissa@thoughtbot.com>
Date: Fri, 14 Nov 2014 14:46:29 -0500
Subject: Manually resolve symlinks in test helpers

Mac OS X's `readlink` command does not support the same options as GNU,
FreeBSD, and other operating systems, nor does it support canonicalizing
symlink resolutions.

In place of `readlink`, we're going to borrow [this] suggested
implementation from the community.

[this]:
http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
---
 test/helper.sh | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

(limited to 'test')

diff --git a/test/helper.sh b/test/helper.sh
index 539e270..86ff989 100644
--- a/test/helper.sh
+++ b/test/helper.sh
@@ -25,9 +25,28 @@ refute() {
   return 0
 }
 
+resolved_path() {
+  local original_path="$1"
+  local actual_path="$original_path"
+  local actual_basename="$(basename "$original_path")"
+
+  cd "$(dirname "$original_path")"
+
+  while [ -L "$actual_basename" ]; do
+    actual_path="$(readlink "$actual_basename")"
+    actual_basename="$(basename "$actual_path")"
+
+    cd "$(dirname "$actual_path")"
+  done
+
+  local current_directory="$(pwd -P)"
+
+  printf "%s/%s\n" "$current_directory" "$actual_basename"
+}
+
 assert_linked() {
   local from="$1" to="$2"
-  local resolved="$(readlink -f "$from")"
+  local resolved="$(resolved_path "$from")"
 
   assert "$from should be a symlink" -h "$from"
   assert "$from should resolve to $to, resolved to $resolved" "$resolved" = "$to"
-- 
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