Display graph on project activity page if there is 2 or more analyses

server/sonar-web/src/main/js/apps/projectActivity/__tests__/utils-test.js

@@ -225,3 +225,46 @@ describe('serializeUrlQuery', () => {
     });
   });
 });
+
+describe('hasHistoryData', () => {
+  it('should correctly detect if there is history data', () => {
+    expect(
+      utils.hasHistoryData([
+        {
+          name: 'foo',
+          type: 'INT',
+          data: [
+            { x: new Date('2017-04-27T08:21:32+0200'), y: 2 },
+            { x: new Date('2017-04-30T23:06:24+0200'), y: 2 }
+          ]
+        }
+      ])
+    ).toBeTruthy();
+    expect(
+      utils.hasHistoryData([
+        {
+          name: 'foo',
+          type: 'INT',
+          data: []
+        },
+        {
+          name: 'bar',
+          type: 'INT',
+          data: [
+            { x: new Date('2017-04-27T08:21:32+0200'), y: 2 },
+            { x: new Date('2017-04-30T23:06:24+0200'), y: 2 }
+          ]
+        }
+      ])
+    ).toBeTruthy();
+    expect(
+      utils.hasHistoryData([
+        {
+          name: 'bar',
+          type: 'INT',
+          data: [{ x: new Date('2017-04-27T08:21:32+0200'), y: 2 }]
+        }
+      ])
+    ).toBeFalsy();
+  });
+});

server/sonar-web/src/main/js/apps/projectActivity/utils.js

@@ -64,7 +64,7 @@ export const datesQueryChanged = (prevQuery: Query, nextQuery: Query): boolean =
 export const hasDataValues = (serie: Serie) => serie.data.some(point => point.y || point.y === 0);
 
 export const hasHistoryData = (series: Array<Serie>) =>
-  series.some(serie => serie.data && serie.data.length > 2);
+  series.some(serie => serie.data && serie.data.length > 1);
 
 export const historyQueryChanged = (prevQuery: Query, nextQuery: Query): boolean =>
   prevQuery.graph !== nextQuery.graph;