diff --git a/tests/unit/services/kredits-test.js b/tests/unit/services/kredits-test.js
index 6909c1d..d3e1e00 100644
--- a/tests/unit/services/kredits-test.js
+++ b/tests/unit/services/kredits-test.js
@@ -1,12 +1,54 @@
 import { module, test } from 'qunit';
 import { setupTest } from 'ember-qunit';
+import contributors from '../../fixtures/contributors';
+import contributions from '../../fixtures/contributions';
 
 module('Unit | Service | kredits', function(hooks) {
   setupTest(hooks);
 
-  // Replace this with your real tests.
-  test('it exists', function(assert) {
+  test('#contributionsConfirmed', function(assert) {
     let service = this.owner.lookup('service:kredits');
-    assert.ok(service);
+    service.set('contributions', contributions);
+    service.set('currentBlock', 1023);
+
+    const items = service.contributionsConfirmed;
+    assert.equal(items.length, 5);
+  });
+
+  test('#contributionsUnconfirmed', function(assert) {
+    let service = this.owner.lookup('service:kredits');
+    service.set('contributions', contributions);
+    service.set('currentBlock', 1023);
+
+    const items = service.contributionsUnconfirmed;
+    assert.equal(items.length, 3);
+  });
+
+  test('#kreditsByContributor', function(assert) {
+    let service = this.owner.lookup('service:kredits');
+    service.set('contributors', contributors);
+    service.set('contributions', contributions);
+    service.set('currentBlock', 1023);
+
+    const kreditsByContributor = service.kreditsByContributor;
+
+    console.log(kreditsByContributor);
+
+    // assert.equal(kreditsByContributor.length, 3, 'includes all contributors with confirmed kredits');
+
+    const c1 = kreditsByContributor.find(k => k.contributor.id == 1);
+    assert.equal(c1.amountConfirmed, 11500, 'correct amount confirmed');
+    assert.equal(c1.amountUnconfirmed, 1500, 'correct amount unconfirmed');
+    assert.equal(c1.amountTotal, 13000, 'correct amount total');
+
+    // const c2 = kreditsByContributor.find(k => k.contributor.id == 2);
+    // assert.equal(c1.amountConfirmed, 5500, 'correct amount confirmed');
+    // assert.equal(c1.amountUnconfirmed, 1500, 'correct amount unconfirmed');
+    // assert.equal(c1.amountTotal, 7000, 'correct amount total');
+
+    const c3 = kreditsByContributor.find(k => k.contributor.id == 3);
+    assert.equal(c3.amountConfirmed, 0, 'correct amount confirmed');
+    assert.equal(c3.amountUnconfirmed, 6500, 'correct amount unconfirmed');
+    assert.equal(c3.amountTotal, 6500, 'correct amount total');
   });
 });