diff --git a/package.js b/package.js
index 306daf6..637544a 100644
--- a/package.js
+++ b/package.js
@@ -12,7 +12,7 @@ Npm.depends({
 
 Package.onUse(function(api) {
 
-  api.versionsFrom('1.2.0.1');
+  api.versionsFrom('1.2.1');
 
   api.use([
     'ecmascript',
@@ -25,3 +25,19 @@ Package.onUse(function(api) {
     'source/server/winston-adapter.js'
   ], 'server');
 });
+
+
+Package.onTest(function(api) {
+
+  api.use([
+    'ecmascript',
+    'space:winston',
+    'practicalmeteor:munit@2.1.5',
+    'space:testing@3.0.1'
+  ]);
+
+  api.add_files([
+    'tests/unit/winston-adapter.unit.js',
+  ], 'server');
+
+});
\ No newline at end of file
diff --git a/tests/unit/winston-adapter.unit.js b/tests/unit/winston-adapter.unit.js
new file mode 100644
index 0000000..9ecab0f
--- /dev/null
+++ b/tests/unit/winston-adapter.unit.js
@@ -0,0 +1,177 @@
+describe("Space.Logger.WinstonAdapter", function() {
+
+  beforeEach(function () {
+    this.winston = {
+      config: {syslog: {levels: {} }}
+    };
+
+    class Logger {};
+    Logger.prototype.setLevels = sinon.stub();
+    Logger.prototype.add = sinon.stub();
+    Logger.prototype.remove = sinon.stub();
+    Logger.prototype.setLevels = sinon.stub();
+    Logger.prototype.debug = sinon.stub();
+    Logger.prototype.info = sinon.stub();
+    Logger.prototype.warning = sinon.stub();
+    Logger.prototype.error = sinon.stub();
+
+    this.winston.Logger = sinon.spy(Logger);
+  });
+
+  it('extends Space.Logger.Adapter', function() {
+    expect(Space.Logger.WinstonAdapter).to.extend(Space.Logger.Adapter);
+  });
+
+  describe('construction', function () {
+    it("takes winston as dependency", function() {
+      const adapter = new Space.Logger.WinstonAdapter(this.winston);
+      expect(this.winston.Logger.calledWithNew()).to.be.true;
+      expect(adapter.lib()).to.be.instanceOf(this.winston.Logger);
+    });
+
+    it("throws an error if winston is not provided", function() {
+      const instantiate = function() {
+        new Space.Logger.WinstonAdapter()
+      };
+      expect(instantiate).to.throw(
+        Space.Logger.WinstonAdapter.prototype.ERRORS.winstonMissing()
+      );
+    });
+
+    describe('transports', function () {
+      it("can be constructed without transports argument", function() {
+        instantiate = () => {
+          new Space.Logger.WinstonAdapter(this.winston);
+        };
+        expect(instantiate).to.not.throw(Error);
+      });
+
+      describe("takes transports", function () {
+        it("as empty array", function() {
+          const transports = [];
+          const adapter = new Space.Logger.WinstonAdapter(
+            this.winston, transports
+          );
+          expect(
+            this.winston.Logger.calledWith({transports: transports})
+          ).to.be.true;
+        });
+
+        it("as filled array", function() {
+          const transports = [{name: 'console'}, {name: 'file'}];
+          const adapter = new Space.Logger.WinstonAdapter(
+            this.winston, transports
+          );
+          expect(
+            this.winston.Logger.calledWith({transports: transports})
+          ).to.be.true;
+        });
+      });
+
+    });
+  });
+
+  describe('transports', function () {
+    it('adds transport to winston', function() {
+      const adapter = new Space.Logger.WinstonAdapter(this.winston);
+
+      const transport = sinon.spy();
+      const options = {};
+      adapter.addTransport(transport, options);
+
+      expect(adapter.lib().add).to.be.calledOnce;
+      expect(adapter.lib().add).to.be.calledWith(transport, options);
+    });
+
+    it('removes transport on winston', function() {
+      const adapter = new Space.Logger.WinstonAdapter(this.winston);
+
+      const transport = sinon.spy();
+      adapter.removeTransport(transport);
+
+      expect(adapter.lib().remove).to.be.calledOnce;
+      expect(adapter.lib().remove).to.be.calledWith(transport);
+    });
+
+    it('checks if transport is added on winston', function() {
+      const adapter = new Space.Logger.WinstonAdapter(this.winston);
+      adapter.lib().transports = {console: sinon.spy()}
+
+      expect(adapter.hasTransport('console')).to.be.true;
+    });
+
+    it('returns transport from winston', function() {
+      const adapter = new Space.Logger.WinstonAdapter(this.winston);
+      const consoleTransport = sinon.spy()
+      adapter.lib().transports = {console: consoleTransport};
+
+      expect(adapter.transport('console')).to.be.equal(consoleTransport);
+      expect(adapter.transport('file')).to.be.equal(null);
+    });
+
+    it('returns transports from winston', function() {
+      const adapter = new Space.Logger.WinstonAdapter(this.winston);
+      const transports = {console: sinon.spy}
+      adapter.lib().transports = transports;
+
+      expect(adapter.transports()).to.be.equal(transports);
+    });
+
+    describe('setting level', function () {
+      it('sets level on transport', function () {
+        const adapter = new Space.Logger.WinstonAdapter(this.winston);
+        adapter.lib().transports = {console: sinon.spy()}
+
+        adapter.setLevel('console', 5)
+        expect(adapter.transport('console').level).to.be.equal(5);
+      });
+
+      it('throws error if transport does not exist', function () {
+        const adapter = new Space.Logger.WinstonAdapter(this.winston);
+        adapter.lib().transports = {}
+
+        setLevel = function() {
+          adapter.setLevel('console', 5)
+        };
+        expect(setLevel).to.throw(
+          Space.Logger.WinstonAdapter.prototype.ERRORS.transportNotFound(
+            'console'
+          )
+        );
+      });
+    });
+  });
+
+  describe('logging', function () {
+    describe('logs message as', function () {
+      it("debug", function() {
+        const adapter = new Space.Logger.WinstonAdapter(this.winston);
+        let message = 'My log message';
+        adapter.debug(message);
+        expect(adapter.lib().debug).to.be.calledWithExactly(message);
+      });
+
+      it("info", function() {
+        const adapter = new Space.Logger.WinstonAdapter(this.winston);
+        let message = 'My log message';
+        adapter.info(message);
+        expect(adapter.lib().info).to.be.calledWithExactly(message);
+      });
+
+      it("warning", function() {
+        const adapter = new Space.Logger.WinstonAdapter(this.winston);
+        let message = 'My log message';
+        adapter.warning(message);
+        expect(adapter.lib().warning).to.be.calledWithExactly(message);
+      });
+
+      it("error", function() {
+        const adapter = new Space.Logger.WinstonAdapter(this.winston);
+        let message = 'My log message';
+        adapter.error(message);
+        expect(adapter.lib().error).to.be.calledWithExactly(message);
+      });
+    });
+  });
+
+});