diff --git a/bridge/e2e/perf/httpMetric.e2e.js b/bridge/e2e/perf/httpMetric.e2e.js
new file mode 100644
index 00000000..2be2debd
--- /dev/null
+++ b/bridge/e2e/perf/httpMetric.e2e.js
@@ -0,0 +1,88 @@
+describe('perf()', () => {
+  describe('HttpMetric', () => {
+    it('start() & stop()', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      await httpMetric.stop();
+    });
+
+    it('getAttribute() should return null', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      const value = await httpMetric.getAttribute('foo');
+      should.equal(value, null);
+      await httpMetric.stop();
+    });
+
+    xit('getAttribute() should return string value', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      await httpMetric.putAttribute('foo', 'bar');
+      const value = await httpMetric.getAttribute('foo');
+      should.equal(value, 'bar');
+      await httpMetric.stop();
+    });
+
+    xit('putAttribute()', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      await httpMetric.putAttribute('foo', 'bar');
+      const value = await httpMetric.getAttribute('foo');
+      value.should.equal('bar');
+      await httpMetric.stop();
+    });
+
+    xit('getAttributes()', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      await httpMetric.putAttribute('foo', 'bar');
+      await httpMetric.putAttribute('bar', 'baz');
+      const value = await httpMetric.getAttributes();
+      value.should.deepEqual({
+        foo: 'bar',
+        bar: 'baz',
+      });
+      await httpMetric.stop();
+    });
+
+    xit('removeAttribute()', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      await httpMetric.putAttribute('foobar', 'bar');
+      const value = await httpMetric.getAttribute('foobar');
+      value.should.equal('bar');
+      await httpMetric.removeAttribute('foobar');
+      const removed = await httpMetric.getAttribute('foobar');
+      should.equal(removed, null);
+      await httpMetric.stop();
+    });
+
+    it('setHttpResponseCode()', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      await httpMetric.setHttpResponseCode(500);
+      await httpMetric.stop();
+    });
+
+    it('setRequestPayloadSize()', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      await httpMetric.setRequestPayloadSize(1234567);
+      await httpMetric.stop();
+    });
+
+    it('setResponseContentType()', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      await httpMetric.setResponseContentType('application/foobar');
+      await httpMetric.stop();
+    });
+
+    it('setResponsePayloadSize()', async () => {
+      const httpMetric = firebase.perf().newHttpMetric('http://foo.com', 'GET');
+      await httpMetric.start();
+      await httpMetric.setResponsePayloadSize(123456789);
+      await httpMetric.stop();
+    });
+  });
+});
diff --git a/bridge/e2e/perf/perf.e2e.js b/bridge/e2e/perf/perf.e2e.js
index 6d614f1d..20f0f41d 100644
--- a/bridge/e2e/perf/perf.e2e.js
+++ b/bridge/e2e/perf/perf.e2e.js
@@ -8,9 +8,10 @@ describe('perf()', () => {
       await firebase.perf().setPerformanceCollectionEnabled(false);
     });
 
-    xit('errors if not boolean', async () => {
-      // TODO add validations to lib
-      await firebase.perf().setPerformanceCollectionEnabled();
+    it('errors if not boolean', async () => {
+      (() => firebase.perf().setPerformanceCollectionEnabled()).should.throw(
+        'firebase.perf().setPerformanceCollectionEnabled() requires a boolean value'
+      );
     });
   });
 
@@ -20,15 +21,23 @@ describe('perf()', () => {
       trace.constructor.name.should.be.equal('Trace');
     });
 
-    xit('errors if identifier not a string', async () => {
-      // TODO add validations to lib
-      try {
-        firebase.perf().newTrace([1, 2, 3, 4]);
-      } catch (e) {
-        return undefined;
-      }
+    it('errors if identifier not a string', async () => {
+      (() => firebase.perf().newTrace([1, 2, 3, 4])).should.throw(
+        'firebase.perf().newTrace() requires a string value'
+      );
+    });
+  });
 
-      throw new Error('Trace did not error on invalid identifier');
+  describe('newHttpMetric()', () => {
+    it('returns an instance of HttpMetric', async () => {
+      const trace = firebase.perf().newHttpMetric('foo', 'bar');
+      trace.constructor.name.should.be.equal('HttpMetric');
+    });
+
+    it('errors if url/httpMethod not a string', async () => {
+      (() => firebase.perf().newHttpMetric(123, [1, 2])).should.throw(
+        'firebase.perf().newHttpMetric() requires url and httpMethod string values'
+      );
     });
   });
 });
diff --git a/bridge/e2e/perf/trace.e2e.js b/bridge/e2e/perf/trace.e2e.js
index 0751dcf7..35dedfba 100644
--- a/bridge/e2e/perf/trace.e2e.js
+++ b/bridge/e2e/perf/trace.e2e.js
@@ -1,28 +1,88 @@
 describe('perf()', () => {
-  describe('Trace', () => {
+  describe.only('Trace', () => {
     it('start() & stop()', async () => {
       const trace = firebase.perf().newTrace('bar');
       await trace.start();
       await trace.stop();
     });
 
-    describe('incrementCounter()', () => {
-      it('accepts a string event', async () => {
-        const trace = firebase.perf().newTrace('bar');
-        await trace.start();
-        await trace.incrementCounter('fooby');
-        await trace.incrementCounter('fooby');
-        await trace.incrementCounter('fooby');
-        await trace.incrementCounter('fooby');
-        await trace.stop();
-      });
-
-      xit('errors if event is not a string', async () => {
-        const trace = firebase.perf().newTrace('bar');
-        await trace.start();
-        await trace.incrementCounter([1, 2, 3, 4]);
-        await trace.stop();
-      });
+    it('getAttribute() should return null', async () => {
+      const trace = firebase.perf().newTrace('bar');
+      await trace.start();
+      const value = await trace.getAttribute('foo');
+      should.equal(value, null);
+      await trace.stop();
     });
+
+    it('getAttribute() should return string value', async () => {
+      const trace = firebase.perf().newTrace('bar');
+      await trace.start();
+      await trace.putAttribute('foo', 'bar');
+      const value = await trace.getAttribute('foo');
+      should.equal(value, 'bar');
+      await trace.stop();
+    });
+
+    it('putAttribute()', async () => {
+      const trace = firebase.perf().newTrace('bar');
+      await trace.start();
+      await trace.putAttribute('foo', 'bar');
+      const value = await trace.getAttribute('foo');
+      value.shoud.equal('bar');
+      await trace.stop();
+    });
+
+    it('getAttributes()', async () => {
+      const trace = firebase.perf().newTrace('bar');
+      await trace.start();
+      await trace.putAttribute('foo', 'bar');
+      await trace.putAttribute('bar', 'baz');
+      const value = await trace.getAttributes();
+      value.should.deepEqual({
+        foo: 'bar',
+        bar: 'baz',
+      });
+      await trace.stop();
+    });
+
+    it('removeAttribute()', async () => {
+      const trace = firebase.perf().newTrace('bar');
+      await trace.start();
+      await trace.putAttribute('foobar', 'bar');
+      const value = await trace.getAttribute('foobar');
+      value.should.equal('bar');
+      await trace.removeAttribute('foobar');
+      const removed = await trace.getAttribute('foobar');
+      should.equal(removed, null);
+      await trace.stop();
+    });
+
+    it('getMetric()', async () => {
+      const trace = firebase.perf().newTrace('bar');
+      await trace.start();
+      const metric = await trace.getMetric('foo');
+      metric.should.equal(0);
+      await trace.stop();
+    });
+
+    it('putMetric()', async () => {
+      const trace = firebase.perf().newTrace('bar');
+      await trace.start();
+      await trace.putMetric('baz', 1);
+      const metric = await trace.getMetric('baz');
+      metric.should.equal(1);
+      await trace.stop();
+    });
+
+    it.only('incrementMetric()', async () => {
+      const trace = firebase.perf().newTrace('bar');
+      await trace.start();
+      await trace.putMetric('baz', 1);
+      await trace.incrementMetric('baz', 2);
+      const metric = await trace.getMetric('baz');
+      metric.should.equal(3);
+      await trace.stop();
+    });
+
   });
 });