diff --git a/test/parser/TestYamlParser.ts b/test/parser/TestYamlParser.ts
new file mode 100644
index 0000000..062dd28
--- /dev/null
+++ b/test/parser/TestYamlParser.ts
@@ -0,0 +1,28 @@
+import { expect } from 'chai';
+import { mock } from 'sinon';
+import { YamlParser } from 'src/parser/YamlParser';
+
+describe('yaml parser', () => {
+  describe('dump documents', () => {
+    it('should dump multiple documents', () => {
+    const parser = new YamlParser();
+    const data = parser.dump({}, {});
+
+    expect(data).to.contain('---');
+    });
+  });
+
+  describe('parse documents', () => {
+    it('should parse multiple documents', () => {
+      const parser = new YamlParser();
+      const data = parser.parse(`
+foo: {}
+---
+bar: {}
+      `);
+      
+      expect(Array.isArray(data)).to.equal(true);
+      expect(data.length).to.equal(2);
+    });
+  });
+});
diff --git a/test/visitor/TestContext.ts b/test/visitor/TestContext.ts
index 066800d..22d0a4b 100644
--- a/test/visitor/TestContext.ts
+++ b/test/visitor/TestContext.ts
@@ -1,7 +1,22 @@
 import { expect } from 'chai';
+import { VisitorContext } from 'src/visitor/context';
+import { ConsoleLogger } from 'noicejs';
 
-describe('context', () => {
-  it('tests things', () => {
-    expect(true).to.equal(true);
+describe('visitor context', () => {
+  it('should merge results', () => {
+    const firstCtx = new VisitorContext({
+      coerce: false,
+      defaults: false,
+      logger: new ConsoleLogger(),
+    });
+
+    const nextCtx = firstCtx.mergeResult({
+      changes: [{bar: 3}],
+      errors: [{foo: 2}],
+    });
+
+    expect(nextCtx).to.equal(firstCtx);
+    expect(nextCtx.errors.length).to.equal(1);
+    expect(nextCtx.changes.length).to.equal(1);
   });
 });