Jest test cases (#985)

* gauge chart test case added, event-anlytics utils test case added

Signed-off-by: Ramneet Chopra <ramneet_chopra@persistent.com>

* build error resolve: updated snapshots

Signed-off-by: Ramneet Chopra <ramneet_chopra@persistent.com>

Signed-off-by: Ramneet Chopra <ramneet_chopra@persistent.com>

public/components/event_analytics/utils/__tests__/utils.test.tsx

@@ -0,0 +1,83 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { configure } from 'enzyme';
+import Adapter from 'enzyme-adapter-react-16';
+
+import {
+  hexToRgb,
+  lightenColor,
+  formatError,
+  isValidTraceId,
+  rangeNumDocs,
+  getHeaders,
+} from '../utils';
+
+describe('Utils event analytics helper functions', () => {
+  configure({ adapter: new Adapter() });
+
+  it('validates hexToRgb function', () => {
+    expect(hexToRgb()).toBe('rgba(60,161,199,1)');
+    expect(hexToRgb('test', 1, true)).toBe('rgba(96,353,409,1)');
+    expect(hexToRgb('#000000', 1, true)).toBe('rgba(0,0,0,1)');
+  });
+
+  it('validates lightenColor function', () => {
+    expect(lightenColor('#00000', 10)).toBe('#1a1a1a');
+  });
+
+  it('validates formatError function', () => {
+    expect(formatError('Warning', 'This is a warning', 'Test warning description')).toStrictEqual({
+      body: {
+        attributes: { error: { caused_by: { reason: 'Test warning description', type: '' } } },
+      },
+      message: 'This is a warning',
+      name: 'Warning',
+    });
+  });
+
+  it('validates isValidTraceId function', () => {
+    expect(isValidTraceId('#00000')).toBe(false);
+    expect(isValidTraceId('abcdefghijklmnopqrstuvwxyzabcdef')).toBe(true);
+  });
+
+  it('validates rangeNumDocs function', () => {
+    expect(rangeNumDocs(11000)).toBe(10000);
+    expect(rangeNumDocs(-200)).toBe(0);
+    expect(rangeNumDocs(2000)).toBe(2000);
+  });
+
+  it('validates getHeaders function', () => {
+    expect(
+      getHeaders(
+        [
+          {
+            name: 'host',
+            type: 'text',
+          },
+          {
+            name: 'ip_count',
+            type: 'integer',
+          },
+          {
+            name: 'per_ip_bytes',
+            type: 'long',
+          },
+          {
+            name: 'resp_code',
+            type: 'text',
+          },
+          {
+            name: 'sum_bytes',
+            type: 'long',
+          },
+        ],
+        ['', 'Time', '_source'],
+        undefined
+      )
+    ).toBeTruthy();
+    expect(getHeaders([], ['', 'Time', '_source'], undefined)).toBeTruthy();
+  });
+});

public/components/visualizations/charts/__tests__/__snapshots__/bar.test.tsx.snap

@@ -199,7 +199,27 @@ exports[`Bar component Renders bar component 1`] = `
             "status": 200,
           },
         },
-        "userConfigs": Object {},
+        "userConfigs": Object {
+          "dataConfig": Object {
+            "valueOptions": Object {
+              "dimensions": Array [
+                Object {
+                  "label": "tags",
+                  "name": "tags",
+                  "type": "text",
+                },
+              ],
+              "metrics": Array [
+                Object {
+                  "label": "count()",
+                  "name": "count()",
+                  "side": "left",
+                  "type": "integer",
+                },
+              ],
+            },
+          },
+        },
       },
       "vis": Object {
         "barwidth": 0.97,