test: Introduce knowledge of FreeBSD jails

FreeBSD jails act differently than your average vm or similar
application container. All routing passes through one ip address,
which makes things like localhost or 0.0.0.0 resolve differently.

Introduce a helper that allows us to verify if we're in a jail
and another one for returning an ip address for localhost.

Also, skip one test instead of trading additional complexity
in common.js for one specific user scenario.

PR-URL: https://github.com/iojs/io.js/pull/1167
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

1 files changed, 29 insertions, 0 deletions

diff --git a/test/common.js b/test/common.js
index 901425b28..e0db00175 100644
--- a/test/common.js
+++ b/test/common.js
@@ -21,6 +21,35 @@ exports.tmpDir = path.join(exports.testDir, exports.tmpDirName);
 
 var opensslCli = null;
 
+Object.defineProperty(exports, 'inFreeBSDJail', {
+  get: function() {
+    if (process.platform === 'freebsd' &&
+      child_process.execSync('sysctl -n security.jail.jailed').toString() ===
+      '1\n') {
+      return true;
+    } else {
+      return false;
+    }
+  }
+});
+
+Object.defineProperty(exports, 'localhost_ipv4', {
+  get: function() {
+    if (exports.inFreeBSDJail) {
+      // Jailed network interfaces are a bit special - since we need to jump
+      // through loops, as well as this being an exception case, assume the
+      // user will provide this instead.
+      if (process.env.LOCALHOST)
+        return process.env.LOCALHOST;
+
+      console.error('Looks like we\'re in a FreeBSD Jail. ' +
+                    'Please provide your default interface address ' +
+                    'as LOCALHOST or expect some tests to fail.');
+    }
+    return '127.0.0.1';
+  }
+});
+
 // opensslCli defined lazily to reduce overhead of spawnSync
 Object.defineProperty(exports, 'opensslCli', {get: function() {
   if (opensslCli !== null) return opensslCli;