Feat: Match allowed cookies with optional character (#71047)

* Match allowed cookies with optional character

* Use strings package

pkg/services/datasources/models_test.go

@@ -0,0 +1,60 @@
+package datasources
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/grafana/grafana/pkg/components/simplejson"
+)
+
+func TestAllowedCookies(t *testing.T) {
+	testCases := []struct {
+		desc  string
+		given map[string]interface{}
+		want  []string
+	}{
+		{
+			desc: "Usual json data with keepCookies",
+			given: map[string]interface{}{
+				"keepCookies": []string{"cookie2"},
+			},
+			want: []string{"cookie2"},
+		},
+		{
+			desc: "Usual json data without kepCookies",
+			given: map[string]interface{}{
+				"something": "somethingelse",
+			},
+			want: []string(nil),
+		},
+		{
+			desc: "Usual json data that has multiple values in keepCookies",
+			given: map[string]interface{}{
+				"keepCookies": []string{"cookie1", "cookie2", "special[]"},
+			},
+			want: []string{"cookie1", "cookie2", "special[]"},
+		},
+	}
+
+	for _, test := range testCases {
+		t.Run(test.desc, func(t *testing.T) {
+			jsonDataBytes, err := json.Marshal(&test.given)
+			require.NoError(t, err)
+			jsonData, err := simplejson.NewJson(jsonDataBytes)
+			require.NoError(t, err)
+
+			ds := DataSource{
+				ID:       1235,
+				JsonData: jsonData,
+				UID:      "test",
+			}
+
+			actual := ds.AllowedCookies()
+			assert.Equal(t, test.want, actual)
+			assert.EqualValues(t, test.want, actual)
+		})
+	}
+}