diff --git a/package.json b/package.json
index dd1a8a7..b437ac4 100644
--- a/package.json
+++ b/package.json
@@ -35,16 +35,19 @@
     "@istanbuljs/nyc-config-typescript": "0.1.3",
     "@types/bunyan": "1.8.6",
     "@types/chai": "4.2.4",
+    "@types/chai-as-promised": "^7.1.2",
     "@types/deep-diff": "1.0.0",
     "@types/js-yaml": "3.12.1",
     "@types/lodash": "4.14.144",
     "@types/mocha": "5.2.7",
     "@types/sinon": "7.5.0",
+    "@types/sinon-chai": "^3.2.3",
     "@types/source-map-support": "0.5.0",
     "@types/yargs": "13.0.3",
     "ajv": "6.10.2",
     "bunyan": "1.8.12",
     "chai": "4.2.0",
+    "chai-as-promised": "^7.1.1",
     "deep-diff": "1.0.2",
     "js-yaml": "3.13.1",
     "jsonpath-plus": "1.1.0",
@@ -61,6 +64,7 @@
     "rollup-plugin-tslint": "0.2.2",
     "rollup-plugin-typescript2": "0.24.3",
     "sinon": "7.5.0",
+    "sinon-chai": "^3.3.0",
     "source-map-support": "0.5.15",
     "standard-version": "7.0.0",
     "tslint": "5.20.0",
diff --git a/test/TestRule.ts b/test/TestRule.ts
index 52f7aa3..21b2b7d 100644
--- a/test/TestRule.ts
+++ b/test/TestRule.ts
@@ -1,6 +1,6 @@
 import { expect } from 'chai';
 import { ConsoleLogger } from 'noicejs';
-import { mock } from 'sinon';
+import { mock, spy } from 'sinon';
 
 import { makeSelector, resolveRules, Rule, visitRules } from '../src/rule';
 import { VisitorContext } from '../src/visitor/VisitorContext';
@@ -167,4 +167,65 @@ describeLeaks('rule visitor', async () => {
     mockRule.verify();
     expect(ctx.errors.length).to.equal(0);
   });
+
+  itLeaks('should pick items from the scope', async () => {
+    const ctx = new VisitorContext({
+      innerOptions: {
+        coerce: false,
+        defaults: false,
+        mutate: false,
+      },
+      logger: new ConsoleLogger(),
+    });
+    const data = {
+      foo: 3,
+    };
+    const rule = new Rule({
+      check: {},
+      desc: '',
+      level: 'info',
+      name: 'foo',
+      select: '$.foo',
+      tags: [],
+    });
+    const results = await rule.pick(ctx, data);
+
+    expect(results).to.deep.equal([data.foo]);
+  });
+
+  itLeaks('should filter out items', async () => {
+    const ctx = new VisitorContext({
+      innerOptions: {
+        coerce: false,
+        defaults: false,
+        mutate: false,
+      },
+      logger: new ConsoleLogger(),
+    });
+    const errorSpy = spy(ctx, 'error');
+
+    const data = {
+      foo: 3,
+    };
+    const rule = new Rule({
+      check: {},
+      desc: '',
+      filter: {
+        properties: {
+          foo: {
+            type: 'number',
+          },
+        },
+        type: 'object',
+      },
+      level: 'info',
+      name: 'foo',
+      select: '$.foo',
+      tags: [],
+    });
+
+    const results = await rule.visit(ctx, data);
+    expect(results.errors.length).to.equal(0);
+    expect(errorSpy).to.have.callCount(0);
+  });
 });
diff --git a/test/harness.ts b/test/harness.ts
index 0b06326..d7fd151 100644
--- a/test/harness.ts
+++ b/test/harness.ts
@@ -1,3 +1,22 @@
+import chai from 'chai';
+import chaiAsPromised from 'chai-as-promised';
+import sinonChai from 'sinon-chai';
 import sourceMapSupport from 'source-map-support';
 
-sourceMapSupport.install();
+sourceMapSupport.install({
+  environment: 'node',
+  handleUncaughtExceptions: true,
+  hookRequire: true,
+});
+
+/**
+ * This will break the whole test run if any test leaks an unhandled rejection.
+ */
+process.on('unhandledRejection', (reason, promise) => {
+  // tslint:disable-next-line:no-console
+  console.error('unhandled error during tests', reason);
+  process.exit(1);
+});
+
+chai.use(chaiAsPromised);
+chai.use(sinonChai);
diff --git a/yarn.lock b/yarn.lock
index 955a27f..88767c3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -130,7 +130,14 @@
   dependencies:
     "@types/node" "*"
 
-"@types/chai@4.2.4":
+"@types/chai-as-promised@^7.1.2":
+  version "7.1.2"
+  resolved "https://artifacts.apextoaster.com/repository/group-npm/@types/chai-as-promised/-/chai-as-promised-7.1.2.tgz#2f564420e81eaf8650169e5a3a6b93e096e5068b"
+  integrity sha512-PO2gcfR3Oxa+u0QvECLe1xKXOqYTzCmWf0FhLhjREoW3fPAVamjihL7v1MOVLJLsnAMdLcjkfrs01yvDMwVK4Q==
+  dependencies:
+    "@types/chai" "*"
+
+"@types/chai@*", "@types/chai@4.2.4":
   version "4.2.4"
   resolved "https://artifacts.apextoaster.com/repository/group-npm/@types/chai/-/chai-4.2.4.tgz#8936cffad3c96ec470a2dc26a38c3ba8b9b6f619"
   integrity sha512-7qvf9F9tMTzo0akeswHPGqgUx/gIaJqrOEET/FCD8CFRkSUHlygQiM5yB6OvjrtdxBVLSyw7COJubsFYs0683g==
@@ -172,7 +179,15 @@
   dependencies:
     "@types/node" "*"
 
-"@types/sinon@7.5.0":
+"@types/sinon-chai@^3.2.3":
+  version "3.2.3"
+  resolved "https://artifacts.apextoaster.com/repository/group-npm/@types/sinon-chai/-/sinon-chai-3.2.3.tgz#afe392303dda95cc8069685d1e537ff434fa506e"
+  integrity sha512-TOUFS6vqS0PVL1I8NGVSNcFaNJtFoyZPXZ5zur+qlhDfOmQECZZM4H4kKgca6O8L+QceX/ymODZASfUfn+y4yQ==
+  dependencies:
+    "@types/chai" "*"
+    "@types/sinon" "*"
+
+"@types/sinon@*", "@types/sinon@7.5.0":
   version "7.5.0"
   resolved "https://artifacts.apextoaster.com/repository/group-npm/@types/sinon/-/sinon-7.5.0.tgz#f5a10c27175465a0b001b68d8b9f761582967cc6"
   integrity sha512-NyzhuSBy97B/zE58cDw4NyGvByQbAHNP9069KVSgnXt/sc0T6MFRh0InKAeBVHJWdSXG1S3+PxgVIgKo9mTHbw==
@@ -380,6 +395,13 @@ camelcase@^5.0.0:
   resolved "https://artifacts.apextoaster.com/repository/group-npm/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
   integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
 
+chai-as-promised@^7.1.1:
+  version "7.1.1"
+  resolved "https://artifacts.apextoaster.com/repository/group-npm/chai-as-promised/-/chai-as-promised-7.1.1.tgz#08645d825deb8696ee61725dbf590c012eb00ca0"
+  integrity sha512-azL6xMoi+uxu6z4rhWQ1jbdUhOMhis2PvscD/xjLqNMkv3BPPp2JyyuTHOrf9BOosGpNQ11v6BKv/g57RXbiaA==
+  dependencies:
+    check-error "^1.0.2"
+
 chai@4.2.0:
   version "4.2.0"
   resolved "https://artifacts.apextoaster.com/repository/group-npm/chai/-/chai-4.2.0.tgz#760aa72cf20e3795e84b12877ce0e83737aa29e5"
@@ -2307,6 +2329,11 @@ signal-exit@^3.0.0, signal-exit@^3.0.2:
   resolved "https://artifacts.apextoaster.com/repository/group-npm/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
   integrity sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=
 
+sinon-chai@^3.3.0:
+  version "3.3.0"
+  resolved "https://artifacts.apextoaster.com/repository/group-npm/sinon-chai/-/sinon-chai-3.3.0.tgz#8084ff99451064910fbe2c2cb8ab540c00b740ea"
+  integrity sha512-r2JhDY7gbbmh5z3Q62pNbrjxZdOAjpsqW/8yxAZRSqLZqowmfGZPGUZPFf3UX36NLis0cv8VEM5IJh9HgkSOAA==
+
 sinon@7.5.0:
   version "7.5.0"
   resolved "https://artifacts.apextoaster.com/repository/group-npm/sinon/-/sinon-7.5.0.tgz#e9488ea466070ea908fd44a3d6478fd4923c67ec"