Identity view cert_fingerprints_by_expiry

Also move complex identity views into js designs.
Includes test.

Here's how you would query it from outside rails:
```
$ curl
'localhost:5984/identities/_design/Identity/_view/cert_fingerprints_by_expiry?startkey="2014-07-05"'
{"total_rows":4,"offset":1,"rows":[
{"id":"6c9091d4f13eaeaa6062c9d0528fd34d","key":"2014-07-05","value":"fingerprint"},
{"id":"6f3aa93828b4f6978d551f2623b9d103","key":"2014-07-05","value":"fingerprint"},
{"id":"b6cafacfa65042679691cd5065fb19e3","key":"2014-07-07","value":"fp"}
]}
```

Note that the expiry will be used as the key. So you should use the
current data (or yesterday) as the startkey to get all fingerprints that
have not expired yet.

The fingerprint itself is in the value. No need to include docs.

1 files changed, 16 insertions, 0 deletions

diff --git a/test/unit/identity_test.rb b/test/unit/identity_test.rb
index 49b2075..933b0ff 100644
--- a/test/unit/identity_test.rb
+++ b/test/unit/identity_test.rb
@@ -136,6 +136,22 @@ class IdentityTest < ActiveSupport::TestCase
     assert_equal 0, Identity.disabled.count
   end
 
+  test "store cert fingerprint" do
+    begin
+      id = Identity.for(@user)
+      cert = stub expiry: Time.now, fingerprint: "fp"
+      id.register_cert cert
+      id.save
+      entry = {cert.fingerprint => cert.expiry.to_date.to_s}
+      assert_equal entry, id.cert_fingerprints
+      row = Identity.cert_fingerprints_by_expiry.descending.rows.first
+      assert_equal row['key'], cert.expiry.to_date.to_s
+      assert_equal row['value'], cert.fingerprint
+    ensure
+      id.reload.destroy if id && id.persisted?
+    end
+  end
+
   def alias_name
     @alias_name ||= Faker::Internet.user_name
   end