diff --git a/.travis.yml b/.travis.yml
index cbab6ae216..aff28cd6a6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -115,6 +115,26 @@ matrix:
         - TRAVIS_RUST_VERSION=nightly
         - REGULAR_TEST=false
         - CODE_COVERAGE=true
+    - name: test WASM
+      language: python
+      python: 3.6
+      cache:
+        pip: true
+        # Because we're using the Python Travis environment, we can't use
+        # the built-in cargo cacher
+        directories:
+          - /home/travis/.cargo
+          - target
+      addons:
+        firefox: latest
+      install:
+        - nvm install node
+        - pip install pipenv
+      script:
+        - wasm/tests/.travis-runner.sh
+      env:
+        - REGULAR_TEST=true
+        - TRAVIS_RUST_VERSION=stable
   allow_failures:
     - rust: nightly
       env: REGULAR_TEST=true
diff --git a/wasm/demo/package.json b/wasm/demo/package.json
index 2184c6db84..a03c80aced 100644
--- a/wasm/demo/package.json
+++ b/wasm/demo/package.json
@@ -16,12 +16,15 @@
         "raw-loader": "^1.0.0",
         "webpack": "^4.16.3",
         "webpack-cli": "^3.1.0",
-        "webpack-dev-server": "^3.1.5"
+        "webpack-dev-server": "^3.1.5",
+        "start-server-and-test": "^1.7.11"
     },
     "scripts": {
         "dev": "webpack-dev-server -d",
         "build": "webpack",
-        "dist": "webpack --mode production"
+        "dist": "webpack --mode production",
+        "test": "cd ../tests; pipenv run pytest",
+        "ci": "start-server-and-test dev http-get://localhost:8080 test"
     },
     "repository": {
         "type": "git",
diff --git a/wasm/tests/.travis-runner.sh b/wasm/tests/.travis-runner.sh
new file mode 100755
index 0000000000..add96c6b24
--- /dev/null
+++ b/wasm/tests/.travis-runner.sh
@@ -0,0 +1,23 @@
+#!/bin/sh -eux
+# This script is intended to be run in Travis from the root of the repository
+
+# Install Rust
+curl -sSf https://build.travis-ci.org/files/rustup-init.sh | sh -s -- --default-toolchain=$TRAVIS_RUST_VERSION -y
+export PATH=$HOME/.cargo/bin:$PATH
+
+# install wasm-pack
+if [ ! -f $HOME/.cargo/bin/wasm-pack ]; then
+    curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
+fi
+
+# install geckodriver
+wget https://github.com/mozilla/geckodriver/releases/download/v0.24.0/geckodriver-v0.24.0-linux32.tar.gz
+mkdir geckodriver
+tar -xzf geckodriver-v0.24.0-linux32.tar.gz -C geckodriver
+export PATH=$PATH:$PWD/geckodriver
+
+# Install pipenv
+pip install pipenv
+(cd wasm/tests; pipenv install)
+
+(cd wasm/demo; npm install; npm run ci)
diff --git a/wasm/tests/Pipfile b/wasm/tests/Pipfile
new file mode 100644
index 0000000000..547282c585
--- /dev/null
+++ b/wasm/tests/Pipfile
@@ -0,0 +1,13 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+pytest = "*"
+selenium = "*"
+
+[dev-packages]
+
+[requires]
+python_version = "3"
diff --git a/wasm/tests/Pipfile.lock b/wasm/tests/Pipfile.lock
new file mode 100644
index 0000000000..7f8b97f879
--- /dev/null
+++ b/wasm/tests/Pipfile.lock
@@ -0,0 +1,87 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "e7ebbd25509f50c886b2e9773e88b011af0cbc4bfcfebb386024be80d2c3aa49"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "3"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "atomicwrites": {
+            "hashes": [
+                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
+                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
+            ],
+            "version": "==1.3.0"
+        },
+        "attrs": {
+            "hashes": [
+                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
+                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
+            ],
+            "version": "==19.1.0"
+        },
+        "more-itertools": {
+            "hashes": [
+                "sha256:0125e8f60e9e031347105eb1682cef932f5e97d7b9a1a28d9bf00c22a5daef40",
+                "sha256:590044e3942351a1bdb1de960b739ff4ce277960f2425ad4509446dbace8d9d1"
+            ],
+            "markers": "python_version > '2.7'",
+            "version": "==6.0.0"
+        },
+        "pluggy": {
+            "hashes": [
+                "sha256:19ecf9ce9db2fce065a7a0586e07cfb4ac8614fe96edf628a264b1c70116cf8f",
+                "sha256:84d306a647cc805219916e62aab89caa97a33a1dd8c342e87a37f91073cd4746"
+            ],
+            "version": "==0.9.0"
+        },
+        "py": {
+            "hashes": [
+                "sha256:64f65755aee5b381cea27766a3a147c3f15b9b6b9ac88676de66ba2ae36793fa",
+                "sha256:dc639b046a6e2cff5bbe40194ad65936d6ba360b52b3c3fe1d08a82dd50b5e53"
+            ],
+            "version": "==1.8.0"
+        },
+        "pytest": {
+            "hashes": [
+                "sha256:592eaa2c33fae68c7d75aacf042efc9f77b27c08a6224a4f59beab8d9a420523",
+                "sha256:ad3ad5c450284819ecde191a654c09b0ec72257a2c711b9633d677c71c9850c4"
+            ],
+            "index": "pypi",
+            "version": "==4.3.1"
+        },
+        "selenium": {
+            "hashes": [
+                "sha256:2d7131d7bc5a5b99a2d9b04aaf2612c411b03b8ca1b1ee8d3de5845a9be2cb3c",
+                "sha256:deaf32b60ad91a4611b98d8002757f29e6f2c2d5fcaf202e1c9ad06d6772300d"
+            ],
+            "index": "pypi",
+            "version": "==3.141.0"
+        },
+        "six": {
+            "hashes": [
+                "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
+                "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
+            ],
+            "version": "==1.12.0"
+        },
+        "urllib3": {
+            "hashes": [
+                "sha256:61bf29cada3fc2fbefad4fdf059ea4bd1b4a86d2b6d15e1c7c0b582b9752fe39",
+                "sha256:de9529817c93f27c8ccbfead6985011db27bd0ddfcdb2d86f3f663385c6a9c22"
+            ],
+            "version": "==1.24.1"
+        }
+    },
+    "develop": {}
+}
diff --git a/wasm/tests/test_demo.py b/wasm/tests/test_demo.py
new file mode 100644
index 0000000000..9dce406811
--- /dev/null
+++ b/wasm/tests/test_demo.py
@@ -0,0 +1,38 @@
+import time
+
+from selenium import webdriver
+from selenium.webdriver.firefox.options import Options
+import pytest
+
+RUN_CODE_TEMPLATE = """
+var output = "";
+save_output = function(text) {{
+	output += text
+}};
+var vm = window.rp.vmStore.init('test_vm');
+vm.setStdout(save_output);
+vm.exec('{}');
+vm.destroy();
+return output;
+"""
+
+@pytest.fixture(scope="module")
+def driver(request):
+	options = Options()
+	options.add_argument('-headless')
+	driver = webdriver.Firefox(options=options)
+	driver.get("http://localhost:8080")
+	time.sleep(5)
+	yield driver
+	driver.close()
+
+
+@pytest.mark.parametrize("script, output",
+	[
+		("print(5)", "5"),
+		("a=5;b=4;print(a+b)", "9")
+	]
+)
+def test_demo(driver, script, output):
+	script = RUN_CODE_TEMPLATE.format(script)
+	assert driver.execute_script(script).strip() == output