backup site: add contents

it is a json that can be one of the three:

* null - include everything
* include - only include these ids
* exclude - everything except these ids

src/routes/test/backupsites-test.js

@@ -19,7 +19,8 @@ describe('Backups API', function () {
         config: { backupDir: '/tmp/boxtest-newsite' },
         format: 'tgz',
         retention: { keepWithinSecs: 60 * 60 },
-        schedule:  '00 01 * * * *'
+        schedule:  '00 01 * * * *',
+        contents: null
     };
 
     const encryptedSite = {
@@ -29,6 +30,7 @@ describe('Backups API', function () {
         format: 'rsync',
         retention: { keepMonthly: 60 },
         schedule:  '* 1 * * * *',
+        contents: { exclude: [ 'thatapp' ] }
     };
 
     describe('add', function () {
@@ -210,6 +212,59 @@ describe('Backups API', function () {
         });
     });
 
+    describe('contents', function () {
+        it('cannot set invalid contents', async function () {
+            const response = await superagent.post(`${serverUrl}/api/v1/backup_sites/${newSite.id}/configure/contents`)
+                .query({ access_token: owner.token })
+                .send({ contents: 'garbage' })
+                .ok(() => true);
+
+            expect(response.status).to.equal(400);
+        });
+
+        it('cannot set invalid include', async function () {
+            const response = await superagent.post(`${serverUrl}/api/v1/backup_sites/${newSite.id}/configure/contents`)
+                .query({ access_token: owner.token })
+                .send({ contents: { include: 'something' } })
+                .ok(() => true);
+
+            expect(response.status).to.equal(400);
+        });
+
+        it('can set include', async function () {
+            const response = await superagent.post(`${serverUrl}/api/v1/backup_sites/${newSite.id}/configure/contents`)
+                .query({ access_token: owner.token })
+                .send({ contents: { include: [ 'something' ]} })
+                .ok(() => true);
+
+            expect(response.status).to.equal(200);
+            const result = await backupSites.get(newSite.id);
+            expect(result.contents).to.eql({ include: [ 'something' ]});
+        });
+
+        it('can set exclude', async function () {
+            const response = await superagent.post(`${serverUrl}/api/v1/backup_sites/${newSite.id}/configure/contents`)
+                .query({ access_token: owner.token })
+                .send({ contents: { exclude: [ 'something' ]} })
+                .ok(() => true);
+
+            expect(response.status).to.equal(200);
+            const result = await backupSites.get(newSite.id);
+            expect(result.contents).to.eql({ exclude: [ 'something' ] });
+        });
+
+        it('can set null', async function () {
+            const response = await superagent.post(`${serverUrl}/api/v1/backup_sites/${newSite.id}/configure/contents`)
+                .query({ access_token: owner.token })
+                .send({ contents: null })
+                .ok(() => true);
+
+            expect(response.status).to.equal(200);
+            const result = await backupSites.get(newSite.id);
+            expect(result.contents).to.eql(null);
+        });
+    });
+
     describe('primary', function () {
         it('cannot set invalid id', async function () {
             const response = await superagent.post(`${serverUrl}/api/v1/backup_sites/${newSite.id}xx/configure/primary`)