diff --git a/package-lock.json b/package-lock.json
index d66a778..0698a6e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,7 +5,7 @@
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+      "name": "twinkler",
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@@ -23,6 +23,12 @@
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@@ -3598,6 +3604,15 @@
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@@ -3615,6 +3630,25 @@
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@@ -4339,6 +4373,35 @@
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@@ -4510,6 +4573,40 @@
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@@ -6231,6 +6523,12 @@
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       "resolved": "https://registry.npmjs.org/parse5/-/parse5-6.0.1.tgz",
       "integrity": "sha512-Ofn/CTFzRGTTxwpNEs9PP93gXShHcTq255nzRYSKe8AkVpZY7e1fpmTfOyoIvjP5HG7Z2ZM7VS9PPhQGW2pOpw=="
     },
+    "parse5-htmlparser2-tree-adapter": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/parse5-htmlparser2-tree-adapter/-/parse5-htmlparser2-tree-adapter-7.0.0.tgz",
+      "integrity": "sha512-B77tOZrqqfUfnVcOrUvfdLbz4pu4RopLD/4vmu3HUPswwTA8OH0EMW9BlWR2B0RCoiZRAHEUu7IxeP1Pd1UU+g==",
+      "dev": true,
+      "requires": {
+        "domhandler": "^5.0.2",
+        "parse5": "^7.0.0"
+      },
+      "dependencies": {
+        "domhandler": {
+          "version": "5.0.3",
+          "resolved": "https://registry.npmjs.org/domhandler/-/domhandler-5.0.3.tgz",
+          "integrity": "sha512-cgwlv/1iFQiFnU96XXgROh8xTeetsnJiDsTc7TYCLFd9+/WNkIqPTxiM/8pSd8VIrhXGTf1Ny1q1hquVqDJB5w==",
+          "dev": true,
+          "requires": {
+            "domelementtype": "^2.3.0"
+          }
+        },
+        "entities": {
+          "version": "4.3.1",
+          "resolved": "https://registry.npmjs.org/entities/-/entities-4.3.1.tgz",
+          "integrity": "sha512-o4q/dYJlmyjP2zfnaWDUC6A3BQFmVTX+tZPezK7k0GLSU9QYCauscf5Y+qcEPzKL+EixVouYDgLQK5H9GrLpkg==",
+          "dev": true
+        },
+        "parse5": {
+          "version": "7.0.0",
+          "resolved": "https://registry.npmjs.org/parse5/-/parse5-7.0.0.tgz",
+          "integrity": "sha512-y/t8IXSPWTuRZqXc0ajH/UwDj4mnqLEbSttNbThcFhGrZuOyoyvNBO85PBp2jQa55wY9d07PBNjsK8ZP3K5U6g==",
+          "dev": true,
+          "requires": {
+            "entities": "^4.3.0"
+          }
+        }
+      }
+    },
     "parseurl": {
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
@@ -26068,6 +27149,17 @@
         }
       }
     },
+    "prop-types-exact": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/prop-types-exact/-/prop-types-exact-1.2.0.tgz",
+      "integrity": "sha512-K+Tk3Kd9V0odiXFP9fwDHUYRyvK3Nun3GVyPapSIs5OBkITAm15W0CPFD/YKTkMUAbc0b9CUwRQp2ybiBIq+eA==",
+      "dev": true,
+      "requires": {
+        "has": "^1.0.3",
+        "object.assign": "^4.1.0",
+        "reflect.ownkeys": "^0.2.0"
+      }
+    },
     "proxy-addr": {
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
@@ -26125,6 +27217,22 @@
         "performance-now": "^2.1.0"
       }
     },
+    "railroad-diagrams": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/railroad-diagrams/-/railroad-diagrams-1.0.0.tgz",
+      "integrity": "sha512-cz93DjNeLY0idrCNOH6PviZGRN9GJhsdm9hpn1YCS879fj4W+x5IFJhhkRZcwVgMmFF7R82UA/7Oh+R8lLZg6A==",
+      "dev": true
+    },
+    "randexp": {
+      "version": "0.4.6",
+      "resolved": "https://registry.npmjs.org/randexp/-/randexp-0.4.6.tgz",
+      "integrity": "sha512-80WNmd9DA0tmZrw9qQa62GPPWfuXJknrmVmLcxvq4uZBdYqb1wYoKTmnlGUchvVWe0XiLupYkBoXVOxz3C8DYQ==",
+      "dev": true,
+      "requires": {
+        "discontinuous-range": "1.0.0",
+        "ret": "~0.1.10"
+      }
+    },
     "randombytes": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/randombytes/-/randombytes-2.1.0.tgz",
@@ -26399,6 +27507,36 @@
         "workbox-webpack-plugin": "^6.4.1"
       }
     },
+    "react-test-renderer": {
+      "version": "16.14.0",
+      "resolved": "https://registry.npmjs.org/react-test-renderer/-/react-test-renderer-16.14.0.tgz",
+      "integrity": "sha512-L8yPjqPE5CZO6rKsKXRO/rVPiaCOy0tQQJbC+UjPNlobl5mad59lvPjwFsQHTvL03caVDIVr9x9/OSgDe6I5Eg==",
+      "dev": true,
+      "requires": {
+        "object-assign": "^4.1.1",
+        "prop-types": "^15.6.2",
+        "react-is": "^16.8.6",
+        "scheduler": "^0.19.1"
+      },
+      "dependencies": {
+        "react-is": {
+          "version": "16.13.1",
+          "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.13.1.tgz",
+          "integrity": "sha512-24e6ynE2H+OKt4kqsOvNd8kBpV65zoxbA4BVsEOB3ARVWQki/DHzaUoC5KuON/BiccDaCCTZBuOcfZs70kR8bQ==",
+          "dev": true
+        },
+        "scheduler": {
+          "version": "0.19.1",
+          "resolved": "https://registry.npmjs.org/scheduler/-/scheduler-0.19.1.tgz",
+          "integrity": "sha512-n/zwRWRYSUj0/3g/otKDRPMh6qv2SYMWNq85IEa8iZyAv8od9zDYpGSnpBEjNgcMNq6Scbu5KfIPxNF72R/2EA==",
+          "dev": true,
+          "requires": {
+            "loose-envify": "^1.1.0",
+            "object-assign": "^4.1.1"
+          }
+        }
+      }
+    },
     "read-cache": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/read-cache/-/read-cache-1.0.0.tgz",
@@ -26452,6 +27590,12 @@
         "strip-indent": "^3.0.0"
       }
     },
+    "reflect.ownkeys": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/reflect.ownkeys/-/reflect.ownkeys-0.2.0.tgz",
+      "integrity": "sha512-qOLsBKHCpSOFKK1NUOCGC5VyeufB6lEsFe92AL2bhIJsacZS1qdoOZSbPk3MYKuT2cFlRDnulKXuuElIrMjGUg==",
+      "dev": true
+    },
     "regenerate": {
       "version": "1.4.2",
       "resolved": "https://registry.npmjs.org/regenerate/-/regenerate-1.4.2.tgz",
@@ -26624,6 +27768,12 @@
       "resolved": "https://registry.npmjs.org/resolve.exports/-/resolve.exports-1.1.0.tgz",
       "integrity": "sha512-J1l+Zxxp4XK3LUDZ9m60LRJF/mAe4z6a4xyabPHk7pvK5t35dACV32iIjJDFeWZFfZlO29w6SZ67knR0tHzJtQ=="
     },
+    "ret": {
+      "version": "0.1.15",
+      "resolved": "https://registry.npmjs.org/ret/-/ret-0.1.15.tgz",
+      "integrity": "sha512-TTlYpa+OL+vMMNG24xSlQGEJ3B/RzEfUlLct7b5G/ytav+wPrplCpVMFuwzXbkecJrb6IYo1iFb0S9v37754mg==",
+      "dev": true
+    },
     "retry": {
       "version": "0.13.1",
       "resolved": "https://registry.npmjs.org/retry/-/retry-0.13.1.tgz",
@@ -26694,6 +27844,16 @@
         }
       }
     },
+    "rst-selector-parser": {
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/rst-selector-parser/-/rst-selector-parser-2.2.3.tgz",
+      "integrity": "sha512-nDG1rZeP6oFTLN6yNDV/uiAvs1+FS/KlrEwh7+y7dpuApDBy6bI2HTBcc0/V8lv9OTqfyD34eF7au2pm8aBbhA==",
+      "dev": true,
+      "requires": {
+        "lodash.flattendeep": "^4.4.0",
+        "nearley": "^2.7.10"
+      }
+    },
     "run-parallel": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/run-parallel/-/run-parallel-1.2.0.tgz",
@@ -27133,6 +28293,17 @@
         "side-channel": "^1.0.4"
       }
     },
+    "string.prototype.trim": {
+      "version": "1.2.6",
+      "resolved": "https://registry.npmjs.org/string.prototype.trim/-/string.prototype.trim-1.2.6.tgz",
+      "integrity": "sha512-8lMR2m+U0VJTPp6JjvJTtGyc4FIGq9CdRt7O9p6T0e6K4vjU+OP+SQJpbe/SBmRcCUIvNUnjsbmY6lnMp8MhsQ==",
+      "dev": true,
+      "requires": {
+        "call-bind": "^1.0.2",
+        "define-properties": "^1.1.4",
+        "es-abstract": "^1.19.5"
+      }
+    },
     "string.prototype.trimend": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/string.prototype.trimend/-/string.prototype.trimend-1.0.5.tgz",
diff --git a/package.json b/package.json
index fb0a1d2..451d012 100644
--- a/package.json
+++ b/package.json
@@ -43,5 +43,11 @@
       "last 1 firefox version",
       "last 1 safari version"
     ]
+  },
+  "devDependencies": {
+    "@types/enzyme": "^3.10.12",
+    "@types/enzyme-adapter-react-16": "^1.0.6",
+    "enzyme": "^3.11.0",
+    "enzyme-adapter-react-16": "^1.15.6"
   }
 }
diff --git a/src/App.test.tsx b/src/App.test.tsx
deleted file mode 100644
index 2a68616..0000000
--- a/src/App.test.tsx
+++ /dev/null
@@ -1,9 +0,0 @@
-import React from 'react';
-import { render, screen } from '@testing-library/react';
-import App from './App';
-
-test('renders learn react link', () => {
-  render(<App />);
-  const linkElement = screen.getByText(/learn react/i);
-  expect(linkElement).toBeInTheDocument();
-});
diff --git a/src/Show.test.tsx b/src/Show.test.tsx
new file mode 100644
index 0000000..771ed98
--- /dev/null
+++ b/src/Show.test.tsx
@@ -0,0 +1,15 @@
+import React from "react";
+import { shallow } from "enzyme";
+import Show from "./Show";
+
+describe("Show", () => {
+    it("renders a humorous and endearing error if you load the page without code to show", () => {
+        const wrapper = shallow(<Show
+            userCode=""
+            animationStylesheetId="animations"
+        />);
+        expect(wrapper.find("h1").text()).toEqual("Holy dooley!");
+        expect(wrapper.find("p").text()).toEqual("You've wandered into the wrong place.");
+        expect(wrapper.find("Link").text()).toEqual("Go back");
+    });
+})
\ No newline at end of file
diff --git a/src/setupTests.js b/src/setupTests.js
new file mode 100644
index 0000000..2dc9636
--- /dev/null
+++ b/src/setupTests.js
@@ -0,0 +1,3 @@
+import { configure } from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+configure({ adapter: new Adapter() });
\ No newline at end of file
diff --git a/src/setupTests.ts b/src/setupTests.ts
index 8f2609b..677b856 100644
--- a/src/setupTests.ts
+++ b/src/setupTests.ts
@@ -3,3 +3,6 @@
 // expect(element).toHaveTextContent(/react/i)
 // learn more: https://github.com/testing-library/jest-dom
 import '@testing-library/jest-dom';
+import { configure } from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+configure({ adapter: new Adapter() });