Add snapshot tests

components/__tests__/RefreshWebView.test.js

@@ -13,12 +13,12 @@ import RefreshWebView from '../RefreshWebView';
 // functionality would be very difficult to test properly
 describe('RefreshWebView', () => {
 	it('should render', () => {
-		const didRender = render(
+		const { toJSON } = render(
 			<RefreshWebView
 				isRefreshing={false}
 			/>
 		);
 
-		expect(didRender).toBeTruthy();
+		expect(toJSON()).toMatchSnapshot();
 	});
 });

components/__tests__/ThemeSwitcher.test.js

@@ -14,12 +14,12 @@ import ThemeSwitcher from '../ThemeSwitcher';
 // functionality would be very difficult to test properly
 describe('ThemeSwitcher', () => {
 	it('should render', () => {
-		const didRender = render(
+		const { toJSON } = render(
 			<ThemeProvider>
 				<ThemeSwitcher />
 			</ThemeProvider>
 		);
 
-		expect(didRender).toBeTruthy();
+		expect(toJSON()).toMatchSnapshot();
 	});
 });

components/__tests__/__snapshots__/RefreshWebView.test.js.snap

@@ -0,0 +1,73 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`RefreshWebView should render 1`] = `
+<RCTScrollView
+  collapsable={false}
+  onGestureHandlerEvent={[Function]}
+  onGestureHandlerStateChange={[Function]}
+  onLayout={[Function]}
+  refreshControl={
+    <RefreshControlMock
+      enabled={false}
+      refreshing={false}
+    />
+  }
+  showsHorizontalScrollIndicator={false}
+  showsVerticalScrollIndicator={false}
+  style={
+    Object {
+      "flex": 1,
+      "height": "100%",
+    }
+  }
+>
+  <RCTRefreshControl />
+  <View>
+    <View
+      style={
+        Array [
+          Object {
+            "flex": 1,
+            "overflow": "hidden",
+          },
+          undefined,
+        ]
+      }
+    >
+      <RNCWebView
+        cacheEnabled={true}
+        injectedJavaScriptBeforeContentLoadedForMainFrameOnly={true}
+        injectedJavaScriptForMainFrameOnly={true}
+        javaScriptEnabled={true}
+        messagingEnabled={false}
+        onContentProcessDidTerminate={[Function]}
+        onHttpError={[Function]}
+        onLoadingError={[Function]}
+        onLoadingFinish={[Function]}
+        onLoadingProgress={[Function]}
+        onLoadingStart={[Function]}
+        onMessage={[Function]}
+        onScroll={[Function]}
+        onShouldStartLoadWithRequest={[Function]}
+        source={null}
+        style={
+          Array [
+            Object {
+              "flex": 1,
+              "overflow": "hidden",
+            },
+            Object {
+              "backgroundColor": "#ffffff",
+            },
+            Object {
+              "flex": 1,
+              "height": 1334,
+            },
+          ]
+        }
+        useSharedProcessPool={true}
+      />
+    </View>
+  </View>
+</RCTScrollView>
+`;

components/__tests__/__snapshots__/ThemeSwitcher.test.js.snap

@@ -0,0 +1,3 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`ThemeSwitcher should render 1`] = `null`;