diff --git a/test/fixtures/expectedProperties.json b/test/fixtures/expectedProperties.json
new file mode 100644
index 0000000..94d23e3
--- /dev/null
+++ b/test/fixtures/expectedProperties.json
@@ -0,0 +1,213 @@
+[
+  "DOMException",
+  "NamedNodeMap",
+  "Attr",
+  "Node",
+  "Element",
+  "DocumentFragment",
+  "HTMLDocument",
+  "Document",
+  "XMLDocument",
+  "CharacterData",
+  "Text",
+  "CDATASection",
+  "ProcessingInstruction",
+  "Comment",
+  "DocumentType",
+  "DOMImplementation",
+  "Event",
+  "CustomEvent",
+  "MessageEvent",
+  "ErrorEvent",
+  "HashChangeEvent",
+  "FocusEvent",
+  "PopStateEvent",
+  "UIEvent",
+  "MouseEvent",
+  "KeyboardEvent",
+  "TouchEvent",
+  "ProgressEvent",
+  "EventTarget",
+  "Location",
+  "History",
+  "Blob",
+  "File",
+  "FileList",
+  "DOMParser",
+  "FormData",
+  "HTMLElement",
+  "HTMLAnchorElement",
+  "HTMLAppletElement",
+  "HTMLAreaElement",
+  "HTMLAudioElement",
+  "HTMLBaseElement",
+  "HTMLBodyElement",
+  "HTMLBRElement",
+  "HTMLButtonElement",
+  "HTMLCanvasElement",
+  "HTMLDataElement",
+  "HTMLDataListElement",
+  "HTMLDialogElement",
+  "HTMLDirectoryElement",
+  "HTMLDivElement",
+  "HTMLDListElement",
+  "HTMLEmbedElement",
+  "HTMLFieldSetElement",
+  "HTMLFontElement",
+  "HTMLFormElement",
+  "HTMLFrameElement",
+  "HTMLFrameSetElement",
+  "HTMLHeadingElement",
+  "HTMLHeadElement",
+  "HTMLHRElement",
+  "HTMLHtmlElement",
+  "HTMLIFrameElement",
+  "HTMLImageElement",
+  "HTMLInputElement",
+  "HTMLLabelElement",
+  "HTMLLegendElement",
+  "HTMLLIElement",
+  "HTMLLinkElement",
+  "HTMLMapElement",
+  "HTMLMediaElement",
+  "HTMLMenuElement",
+  "HTMLMetaElement",
+  "HTMLMeterElement",
+  "HTMLModElement",
+  "HTMLObjectElement",
+  "HTMLOListElement",
+  "HTMLOptGroupElement",
+  "HTMLOptionElement",
+  "HTMLOutputElement",
+  "HTMLParagraphElement",
+  "HTMLParamElement",
+  "HTMLPreElement",
+  "HTMLProgressElement",
+  "HTMLQuoteElement",
+  "HTMLScriptElement",
+  "HTMLSelectElement",
+  "HTMLSourceElement",
+  "HTMLSpanElement",
+  "HTMLStyleElement",
+  "HTMLTableCaptionElement",
+  "HTMLTableCellElement",
+  "HTMLTableColElement",
+  "HTMLTableDataCellElement",
+  "HTMLTableElement",
+  "HTMLTableHeaderCellElement",
+  "HTMLTimeElement",
+  "HTMLTitleElement",
+  "HTMLTableRowElement",
+  "HTMLTableSectionElement",
+  "HTMLTemplateElement",
+  "HTMLTextAreaElement",
+  "HTMLTrackElement",
+  "HTMLUListElement",
+  "HTMLUnknownElement",
+  "HTMLVideoElement",
+  "StyleSheet",
+  "MediaList",
+  "CSSStyleSheet",
+  "CSSRule",
+  "CSSStyleRule",
+  "CSSMediaRule",
+  "CSSImportRule",
+  "CSSStyleDeclaration",
+  "StyleSheetList",
+  "XPathException",
+  "XPathExpression",
+  "XPathResult",
+  "XPathEvaluator",
+  "HTMLCollection",
+  "NodeFilter",
+  "NodeIterator",
+  "NodeList",
+  "XMLHttpRequestEventTarget",
+  "XMLHttpRequestUpload",
+  "DOMTokenList",
+  "URL",
+  "Window",
+  "_core",
+  "_globalProxy",
+  "__timers",
+  "_top",
+  "_parent",
+  "_frameElement",
+  "_document",
+  "_sessionHistory",
+  "_currentSessionHistoryEntryIndex",
+  "_length",
+  "_virtualConsole",
+  "length",
+  "window",
+  "frameElement",
+  "frames",
+  "self",
+  "parent",
+  "top",
+  "document",
+  "location",
+  "history",
+  "navigator",
+  "addEventListener",
+  "removeEventListener",
+  "dispatchEvent",
+  "setTimeout",
+  "setInterval",
+  "clearInterval",
+  "clearTimeout",
+  "__stopAllTimers",
+  "Image",
+  "Audio",
+  "postMessage",
+  "atob",
+  "btoa",
+  "FileReader",
+  "XMLHttpRequest",
+  "ArrayBuffer",
+  "Int8Array",
+  "Uint8Array",
+  "Uint8ClampedArray",
+  "Int16Array",
+  "Uint16Array",
+  "Int32Array",
+  "Uint32Array",
+  "Float32Array",
+  "Float64Array",
+  "stop",
+  "close",
+  "getComputedStyle",
+  "console",
+  "name",
+  "innerWidth",
+  "innerHeight",
+  "outerWidth",
+  "outerHeight",
+  "pageXOffset",
+  "pageYOffset",
+  "screenX",
+  "screenY",
+  "screenLeft",
+  "screenTop",
+  "scrollX",
+  "scrollY",
+  "scrollTop",
+  "scrollLeft",
+  "screen",
+  "alert",
+  "blur",
+  "confirm",
+  "createPopup",
+  "focus",
+  "moveBy",
+  "moveTo",
+  "open",
+  "print",
+  "prompt",
+  "resizeBy",
+  "resizeTo",
+  "scroll",
+  "scrollBy",
+  "scrollTo",
+  "toString"
+]
diff --git a/test/window properties should be as expected.js b/test/window properties should be as expected.js
new file mode 100644
index 0000000..6533a47
--- /dev/null
+++ b/test/window properties should be as expected.js	
@@ -0,0 +1,9 @@
+import test from 'ava';
+import expectedProperties from './fixtures/expectedProperties';
+import browserEnv from '../src';
+
+test(t => {
+  browserEnv();
+  const properties = Object.getOwnPropertyNames(window);
+  t.deepEqual(properties, expectedProperties);
+});