add migrations for datasource config

src/datasource-zabbix/specs/migrations.test.js

@@ -0,0 +1,41 @@
+import { migrateDSConfig, DS_CONFIG_SCHEMA } from '../migrations';
+
+describe('Migrations', () => {
+  let ctx = {};
+
+  describe('When migrating datasource config', () => {
+    beforeEach(() => {
+      ctx.jsonData = {
+        dbConnection: {
+          enable: true,
+          datasourceId: 1
+        }
+      };
+    });
+
+    it('should change direct DB connection setting to flat style', () => {
+      migrateDSConfig(ctx.jsonData);
+      expect(ctx.jsonData).toMatchObject({
+        dbConnectionEnable: true,
+        dbConnectionDatasourceId: 1,
+        schema: DS_CONFIG_SCHEMA
+      });
+    });
+
+    it('should not touch anything if schema is up to date', () => {
+      ctx.jsonData = {
+        futureOptionOne: 'foo',
+        futureOptionTwo: 'bar',
+        schema: DS_CONFIG_SCHEMA
+      };
+      migrateDSConfig(ctx.jsonData);
+      expect(ctx.jsonData).toMatchObject({
+        futureOptionOne: 'foo',
+        futureOptionTwo: 'bar',
+        schema: DS_CONFIG_SCHEMA
+      });
+      expect(ctx.jsonData.dbConnectionEnable).toBeUndefined();
+      expect(ctx.jsonData.dbConnectionDatasourceId).toBeUndefined();
+    });
+  });
+});