feat(): adding unit test for json flag

cmd/helm/search_test.go

@@ -84,6 +84,12 @@ func TestSearchCmd(t *testing.T) {
 			flags: []string{"--regexp"},
 			err:   true,
 		},
+		{
+			name:     "search for 'alpine', expect two matches in json",
+			args:     []string{"alpine"},
+			flags:    []string{"--output", "json"},
+			expected: "[\n    {\n        \"name\": \"testing/alpine\",\n        \"chartVersion\": \"0.2.0\",\n        \"appVersion\": \"2.3.4\",\n        \"description\": \"Deploy a basic Alpine Linux pod\"\n    }\n]\n",
+		},
 	}
 
 	cleanup := resetEnv()