#958 Cannot center-justify text in nodes

- assign text-align style to text node to allow aligning of node text

src/diagrams/flowchart/flowRenderer.js

@@ -36,9 +36,10 @@ export const addVertices = function(vert, g, svgId) {
         }
       }
     } else {
+      // create the style definition for the text, if property is a text-property
       for (let i = 0; i < arr.length; i++) {
         if (typeof arr[i] !== 'undefined') {
-          if (arr[i].match('^color:')) styleStr = styleStr + arr[i] + ';';
+          if (arr[i].match('^color:|^text-align:')) styleStr = styleStr + arr[i] + ';';
         }
       }
     }

src/diagrams/flowchart/flowRenderer.spec.js

@@ -54,4 +54,43 @@ describe('the flowchart renderer', function() {
       });
     });
   });
+
+  [
+    [['fill:#fff'], 'fill:#fff;', ''],
+    [['color:#ccc'], 'color:#ccc;', 'color:#ccc;'],
+    [['fill:#fff', 'color:#ccc'], 'fill:#fff;color:#ccc;', 'color:#ccc;'],
+    [
+      ['fill:#fff', 'color:#ccc', 'text-align:center'],
+      'fill:#fff;color:#ccc;text-align:center;',
+      'color:#ccc;text-align:center;'
+    ]
+  ].forEach(function([style, expectedStyle, expectedLabelStyle]) {
+    fit(`should add the styles to style and/or labelStyle for style ${style}`, function() {
+      const addedNodes = [];
+      const mockG = {
+        setNode: function(id, object) {
+          addedNodes.push([id, object]);
+        }
+      };
+      addVertices(
+        {
+          v1: {
+            type: 'rect',
+            id: 'my-node-id',
+            classes: [],
+            styles: style,
+            text: 'my vertex text'
+          }
+        },
+        mockG,
+        'svg-id'
+      );
+      expect(addedNodes).toHaveLength(1);
+      expect(addedNodes[0][0]).toEqual('my-node-id');
+      expect(addedNodes[0][1]).toHaveProperty('id', 'my-node-id');
+      expect(addedNodes[0][1]).toHaveProperty('labelType', 'svg');
+      expect(addedNodes[0][1]).toHaveProperty('style', expectedStyle);
+      expect(addedNodes[0][1]).toHaveProperty('labelStyle', expectedLabelStyle);
+    });
+  });
 });