From a09db30b32e00aff5fcd570a6ce95506f952d832 Mon Sep 17 00:00:00 2001
From: Shefali Joshi <simplyrender@gmail.com>
Date: Thu, 7 Jul 2022 16:44:09 -0700
Subject: [PATCH] Allow endpoints with a single enum metadata value in Bar/Line
 graphs (#5443)

* If there is only 1 metadata value, set yKey to none. Also, fix bug for determining the name of a metadata value
* Update tests for enum metadata values

Co-authored-by: John Hill <john.c.hill@nasa.gov>
Co-authored-by: Andrew Henry <akhenry@gmail.com>
---
 .../charts/bar/inspector/BarGraphOptions.vue  |  6 ++--
 src/plugins/charts/bar/pluginSpec.js          | 33 +++++++++++--------
 2 files changed, 24 insertions(+), 15 deletions(-)

diff --git a/src/plugins/charts/bar/inspector/BarGraphOptions.vue b/src/plugins/charts/bar/inspector/BarGraphOptions.vue
index 2a6ffcab83..13dee4e28d 100644
--- a/src/plugins/charts/bar/inspector/BarGraphOptions.vue
+++ b/src/plugins/charts/bar/inspector/BarGraphOptions.vue
@@ -281,11 +281,11 @@ export default {
                 this.xKeyOptions.push(
                     metadataValues.reduce((previousValue, currentValue) => {
                         return {
-                            name: `${previousValue.name}, ${currentValue.name}`,
+                            name: previousValue?.name ? `${previousValue.name}, ${currentValue.name}` : `${currentValue.name}`,
                             value: currentValue.key,
                             isArrayValue: currentValue.isArrayValue
                         };
-                    })
+                    }, {name: ''})
                 );
             }
 
@@ -336,6 +336,8 @@ export default {
 
                     return option;
                 });
+            } else if (this.xKey !== undefined && this.domainObject.configuration.axes.yKey === undefined) {
+                this.domainObject.configuration.axes.yKey = 'none';
             }
 
             this.xKeyOptions = this.xKeyOptions.map((option, index) => {
diff --git a/src/plugins/charts/bar/pluginSpec.js b/src/plugins/charts/bar/pluginSpec.js
index feea71b81b..b63906bd50 100644
--- a/src/plugins/charts/bar/pluginSpec.js
+++ b/src/plugins/charts/bar/pluginSpec.js
@@ -367,19 +367,26 @@ describe("the plugin", function () {
                 type: "test-object",
                 name: "Test Object",
                 telemetry: {
-                    values: [{
-                        key: "some-key",
-                        name: "Some attribute",
-                        hints: {
-                            domain: 1
-                        }
-                    }, {
-                        key: "some-other-key",
-                        name: "Another attribute",
-                        hints: {
-                            range: 1
-                        }
-                    }]
+                    values: [
+                        {
+                            key: "some-key",
+                            source: "some-key",
+                            name: "Some attribute",
+                            format: "enum",
+                            enumerations: [
+                                {
+                                    value: 0,
+                                    string: "OFF"
+                                },
+                                {
+                                    value: 1,
+                                    string: "ON"
+                                }
+                            ],
+                            hints: {
+                                range: 1
+                            }
+                        }]
                 }
             };
             const composition = openmct.composition.get(parent);