Fix test util to measure text properly based on flex direction (#1768)

Summary:
Pull Request resolved: https://github.com/facebook/yoga/pull/1768

Depending on the flex direction text will either be capped to the measured size or to the longest word, so I added that functionality

Reviewed By: mlord93

Differential Revision: D67106199

fbshipit-source-id: 0b4691768809004043a847f3fc5f7b94e92f1575

tests/util/TestUtil.cpp

@@ -90,14 +90,20 @@ YGSize IntrinsicSizeMeasure(
     measuredHeight = std::min(
         calculateHeight(
             innerText,
-            std::max(longestWordWidth(innerText, widthPerChar), measuredWidth),
+            YGNodeStyleGetFlexDirection(node) == YGFlexDirectionColumn
+                ? measuredWidth
+                : std::max(
+                      longestWordWidth(innerText, widthPerChar), measuredWidth),
             widthPerChar,
             heightPerChar),
         height);
   } else {
     measuredHeight = calculateHeight(
         innerText,
-        std::max(longestWordWidth(innerText, widthPerChar), measuredWidth),
+        YGNodeStyleGetFlexDirection(node) == YGFlexDirectionColumn
+            ? measuredWidth
+            : std::max(
+                  longestWordWidth(innerText, widthPerChar), measuredWidth),
         widthPerChar,
         heightPerChar);
   }