Add regression tests for long JSX Expression contents

tests/prettier/__snapshots__/jsfmt.spec.js.snap

@@ -165,6 +165,16 @@ const render6 = ({ styles }) => (
   </div>
 )
 
+const render7 = () =>
+  <div>
+    <span /><span>Dont break each elem onto its own line.</span> <span />
+    <div /> <div />
+  </div>
+
+const render8 = (props) => <div>{props.text}</div>
+const render9 = (props) => <div>{props.looooooooooooooooooooooooooooooong_text}</div>
+const render10 = (props) => <div>{props.even_looooooooooooooooooooooooooooooooooooooooooonger_contents}</div>
+
 const notJSX = (aaaaaaaaaaaaaaaaa, bbbbbbbbbbb) => this.someLongCallWithParams(aaaaaa, bbbbbbb).anotherLongCallWithParams(cccccccccccc, dddddddddddddddddddddd)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 const render1 = ({ styles }) => (
@@ -227,6 +237,23 @@ const render6 = ({ styles }) => (
   </div>
 );
 
+const render7 = () => (
+  <div>
+    <span /><span>Dont break each elem onto its own line.</span><span />
+    <div /><div />
+  </div>
+);
+
+const render8 = props => <div>{props.text}</div>;
+const render9 = props => (
+  <div>{props.looooooooooooooooooooooooooooooong_text}</div>
+);
+const render10 = props => (
+  <div>
+    {props.even_looooooooooooooooooooooooooooooooooooooooooonger_contents}
+  </div>
+);
+
 const notJSX = (aaaaaaaaaaaaaaaaa, bbbbbbbbbbb) =>
   this
     .someLongCallWithParams(aaaaaa, bbbbbbb)

tests/prettier/jsx-stateless-arrow-fn.js

@@ -23,4 +23,14 @@ const render6 = ({ styles }) => (
   </div>
 )
 
+const render7 = () =>
+  <div>
+    <span /><span>Dont break each elem onto its own line.</span> <span />
+    <div /> <div />
+  </div>
+
+const render8 = (props) => <div>{props.text}</div>
+const render9 = (props) => <div>{props.looooooooooooooooooooooooooooooong_text}</div>
+const render10 = (props) => <div>{props.even_looooooooooooooooooooooooooooooooooooooooooonger_contents}</div>
+
 const notJSX = (aaaaaaaaaaaaaaaaa, bbbbbbbbbbb) => this.someLongCallWithParams(aaaaaa, bbbbbbb).anotherLongCallWithParams(cccccccccccc, dddddddddddddddddddddd)