diff --git a/test/config/type/TestInclude.ts b/test/config/type/TestInclude.ts
index e3603d7..80dc078 100644
--- a/test/config/type/TestInclude.ts
+++ b/test/config/type/TestInclude.ts
@@ -2,7 +2,7 @@ import { expect } from 'chai';
 import { BaseError } from 'noicejs';
 import { join } from 'path';
 
-import { includeType } from '../../../src/config/type/Include';
+import { includeType, resolvePath } from '../../../src/config/type/Include';
 import { NotFoundError } from '../../../src/error/NotFoundError';
 import { describeLeaks, itLeaks } from '../../helpers/async';
 
@@ -36,3 +36,13 @@ describeLeaks('include config type', async () => {
     }).to.throw(BaseError);
   });
 });
+
+describeLeaks('resolve path helper', async () => {
+  itLeaks('should resolve relative paths relative to dirname', async () => {
+    expect(resolvePath('./index.js')).to.equal(join(__dirname, 'index.js'));
+  });
+
+  itLeaks('should resolve absolute paths to themselves', async () => {
+    expect(resolvePath('/')).to.equal('/');
+  });
+});
diff --git a/test/config/type/TestStream.ts b/test/config/type/TestStream.ts
new file mode 100644
index 0000000..f38baa7
--- /dev/null
+++ b/test/config/type/TestStream.ts
@@ -0,0 +1,38 @@
+import { expect } from 'chai';
+
+import { streamType } from '../../../src/config/type/Stream';
+import { NotFoundError } from '../../../src/error/NotFoundError';
+import { describeLeaks, itLeaks } from '../../helpers/async';
+
+const TEST_STREAMS = [{
+  name: 'stderr',
+  stream: process.stderr,
+}, {
+  name: 'stdin',
+  stream: process.stdin,
+}, {
+  name: 'stdout',
+  stream: process.stdout,
+}];
+
+describeLeaks('stream config type', async () => {
+  itLeaks('should resolve allowed streams', async () => {
+    expect(streamType.resolve('stderr')).to.equal(true);
+    expect(streamType.resolve('stdout')).to.equal(true);
+  });
+
+  itLeaks('should throw when stream is not allowed', async () => {
+    expect(() => streamType.resolve('stdin')).to.throw(NotFoundError);
+  });
+
+  itLeaks('should throw when stream does not exist', async () => {
+    expect(() => streamType.resolve('imaginary')).to.throw(NotFoundError);
+  });
+
+  itLeaks('should construct streams', async () => {
+    for (const {name, stream} of TEST_STREAMS) {
+      expect(streamType.construct(name)).to.equal(stream, `should construct stream ${name}`);
+    }
+  });
+});
+