From c37e3519cad5e2777017051906ab1ecc591df7c8 Mon Sep 17 00:00:00 2001
From: Chris P <chris@plot.ly>
Date: Sat, 30 Mar 2019 17:05:47 -0400
Subject: [PATCH] :grimacing: can't figure out which test is causing tests to
 fail in py2

---
 package.json         |  2 +-
 src/actions/index.js | 73 ++++++++++++++++++++++++++++----------------
 2 files changed, 47 insertions(+), 28 deletions(-)

diff --git a/package.json b/package.json
index adc0555..493acb3 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "format": "prettier --config .prettierrc --write src/**/*.js src/**/*.react.js",
     "format:test": "prettier --config .prettierrc src/**/*.js src/**/*.react.js --list-different",
     "test": "npm run lint",
-    "test:py": "python -m unittest tests.test_clientside tests.test_render tests.test_race_conditions"
+    "test:py": "python -m unittest -v tests.test_clientside tests.test_render tests.test_race_conditions"
   },
   "author": "chriddyp",
   "license": "MIT",
diff --git a/src/actions/index.js b/src/actions/index.js
index c9ba75a..d9f611d 100644
--- a/src/actions/index.js
+++ b/src/actions/index.js
@@ -531,36 +531,55 @@ function updateOutput(
             return;
         }
 
-        const [outputId, outputProp] = payload.output.split('.');
-        const updatedProps = {
-            [outputProp]: returnValue,
-        };
+        function updateOutput(outputIdAndProp, outputValue) {
+            const [outputId, outputProp] = outputIdAndProp.split('.');
+            const updatedProps = {
+                [outputProp]: outputValue,
+            };
 
-        /*
-         * Update the request queue by treating a successful clientside
-         * like a succesful serverside response (200 status code)
-         */
-        updateRequestQueue(false, STATUS.OK);
+            /*
+             * Update the request queue by treating a successful clientside
+             * like a succesful serverside response (200 status code)
+             */
+            updateRequestQueue(false, STATUS.OK);
 
-        // Update the layout with the new result
-        dispatch(
-            updateProps({
-                itempath: getState().paths[outputId],
-                props: updatedProps,
-                source: 'response',
-            })
-        );
+            // Update the layout with the new result
+            dispatch(
+                updateProps({
+                    itempath: getState().paths[outputId],
+                    props: updatedProps,
+                    source: 'response',
+                })
+            );
 
-        /*
-         * This output could itself be a serverside or clientside input
-         * to another function
-         */
-        dispatch(
-            notifyObservers({
-                id: outputId,
-                props: updatedProps,
-            })
-        );
+            /*
+             * This output could itself be a serverside or clientside input
+             * to another function
+             */
+            dispatch(
+                notifyObservers({
+                    id: outputId,
+                    props: updatedProps,
+                })
+            );
+        }
+
+        if (payload.output.startsWith('..')) {
+            /*
+             * If this update is for multiple outputs, then it has
+             * starting & trailing `..` and each propId pair is separated
+             * by `...`, e.g.
+             * "..output-1.value...output-2.value...output-3.value...output-4.value.."
+             */
+            const outputPropIds = payload.output.split('...').map(
+                o => o.replace('..', '')  // trim starting & trailing ..
+            );
+            for(let i=0; i < outputPropIds.length; i++) {
+                updateOutput(outputPropIds[i], returnValue[i]);
+            }
+        } else {
+            updateOutput(payload.output, returnValue);
+        }
 
         /*
          * Note that unlike serverside updates, we're not handling