Add buildMetricsSettingsOverrides for testing

Author: roseayeon

tensorboard/webapp/metrics/testing.ts

@@ -64,6 +64,27 @@ export function buildMetricsSettingsState(
   };
 }
 
+// Since Settings proto has missing fields, we need to build a partial of
+// Settings to be used in tests.
+export function buildMetricsSettingsOverrides(
+  overrides?: Partial<MetricsSettings>
+): Partial<MetricsSettings> {
+  return {
+    cardMinWidth: null,
+    tooltipSort: TooltipSort.NEAREST,
+    ignoreOutliers: false,
+    xAxisType: XAxisType.WALL_TIME,
+    scalarSmoothing: 0.3,
+    hideEmptyCards: true,
+    scalarPartitionNonMonotonicX: false,
+    imageBrightnessInMilli: 123,
+    imageContrastInMilli: 123,
+    imageShowActualSize: true,
+    histogramMode: HistogramMode.OFFSET,
+    ...overrides,
+  };
+}
+
 function buildBlankState(): MetricsState {
   return {
     tagMetadataLoadState: {