Fix AppVeyor:

* Detect continuous integration environment via `CI` variable
* Use double quotes for build cache path

appveyor.yml

@@ -19,7 +19,7 @@ environment:
 # At the end of each successful build we cache this directory. It must be less
 # than 100MB total compressed.
 cache:
-  - 'C:\\rippled_deps'
+  - "C:\\rippled_deps"
 
 # This means we'll download a zip of the branch we want, rather than the full
 # history.

test/robust-transaction-test.js

@@ -8,7 +8,7 @@ var Server      = require('./server').Server;
 var testutils   = require('./testutils');
 var config      = testutils.init_config();
 
-var make_suite = process.env.TRAVIS != null ? suite.skip : suite;
+var make_suite = process.env.CI ? suite.skip : suite;
 make_suite('Robust transaction submission', function() {
   var $ = { };
 
@@ -288,7 +288,7 @@ make_suite('Robust transaction submission', function() {
             if (++ledgers === 3) {
               callback();
             } else {
-              setTimeout(nextLedger, process.env.TRAVIS ? 400 : 100 );
+              setTimeout(nextLedger, process.env.CI ? 400 : 100 );
             }
           });
           $.remote.ledger_accept();

test/testutils.js

@@ -616,13 +616,13 @@ function verify_owner_counts(remote, counts, callback) {
   async.every(tests, iterator, callback);
 };
 
-var isTravis = Boolean(process.env.TRAVIS);
+var isCI = Boolean(process.env.CI);
 
 function ledger_wait(remote, tx) {
   ;(function nextLedger() {
     remote.once('ledger_closed', function() {
       if (!tx.finalized) {
-        setTimeout(nextLedger, isTravis ? 400 : 100);
+        setTimeout(nextLedger, isCI ? 400 : 100);
       }
     });
     remote.ledger_accept();

test/ticket-test.js

@@ -9,8 +9,8 @@ var config      = testutils.init_config();
 /* --------------------------------- CONSTS --------------------------------- */
 
 // some parts of the test take a LONG time
-var SKIP_TICKET_EXPIRY_PHASE = process.env.TRAVIS == null &&
+var SKIP_TICKET_EXPIRY_PHASE = !process.env.CI &&
-                               process.env.RUN_TICKET_EXPIRY == null;
+                               !process.env.RUN_TICKET_EXPIRY;
 
 var ROOT_ACCOUNT = UInt160.json_rewrite('root');
 var ALICE_ACCOUNT = UInt160.json_rewrite('alice');