Query Context Cache integration testing fix

test/integration/testHTAP.js

@@ -7,50 +7,63 @@ const async = require('async');
 const connOption = require('./connectionOptions').valid;
 const testUtil = require('./testUtil');
 
+function getRandomDBNames() {
+  const dbName = 'qcc_test_db';
+  const arr = [];
+  const randomNumber = Math.floor(Math.random() * 10000);
+  for (let i = 0; i < 3; i++){
+    arr.push(dbName + (randomNumber + i));
+  }
+  return arr;
+}
+
 // Only the AWS servers support the hybrid table in the GitHub action.
 if (process.env.CLOUD_PROVIDER === 'AWS') {
   describe('Query Context Cache test', function () {
+    this.retries(3);
     let connection;
-
-    before(async () => {
+    const dbNames = getRandomDBNames(); 
+
+    beforeEach(async () => {
       connection = testUtil.createConnection(connOption);
       await testUtil.connectAsync(connection);
     });
 
     after(async () => {
+      await testUtil.dropDBsIgnoringErrorsAsync(connection, dbNames);
       await testUtil.destroyConnectionAsync(connection);
     });
 
     const querySet = [
       {
         sqlTexts: [
-          'create or replace database db1',
+          `create or replace database ${dbNames[0]}`,
           'create or replace hybrid table t1 (a int primary key, b int)',
           'insert into t1 values (1, 2), (2, 3), (3, 4)'
         ],
         QccSize: 2,
       },
       {
         sqlTexts: [
-          'create or replace database db2',
+          `create or replace database ${dbNames[1]}`,
           'create or replace hybrid table t2 (a int primary key, b int)',
           'insert into t2 values (1, 2), (2, 3), (3, 4)'
         ],
         QccSize: 3,
       },
       {
         sqlTexts: [
-          'create or replace database db3',
+          `create or replace database ${dbNames[2]}`,
           'create or replace hybrid table t3 (a int primary key, b int)',
           'insert into t3 values (1, 2), (2, 3), (3, 4)'
         ],
         QccSize: 4,
       },
       {
         sqlTexts: [
-          'select * from db1.public.t1 x, db2.public.t2 y, db3.public.t3 z where x.a = y.a and y.a = z.a;',
-          'select * from db1.public.t1 x, db2.public.t2 y where x.a = y.a;',
-          'select * from db2.public.t2 y, db3.public.t3 z where y.a = z.a;'
+          `select * from ${dbNames[0]}.public.t1 x, ${dbNames[1]}.public.t2 y, ${dbNames[2]}.public.t3 z where x.a = y.a and y.a = z.a;`,
+          `select * from ${dbNames[0]}.public.t1 x, ${dbNames[1]}.public.t2 y where x.a = y.a;`,
+          `select * from ${dbNames[1]}.public.t2 y, ${dbNames[2]}.public.t3 z where y.a = z.a;`
         ],
         QccSize: 4,
       },

test/integration/testUtil.js

@@ -101,6 +101,22 @@ module.exports.dropTablesIgnoringErrorsAsync = async (connection, tableNames) =>
   }
 };
 
+/**
+ * Drop databases one by one if exist - any connection error is ignored
+ * @param connection Connection
+ * @param dbNames string[]
+ * @return {Promise<void>}
+ */
+module.exports.dropDBsIgnoringErrorsAsync = async (connection, dbNames) => {
+  for (const dbName of dbNames) {
+    try {
+      await executeCmdAsync(connection, `DROP DATABASE IF EXISTS ${dbName}`);
+    } catch (e) {
+      console.warn(`Cannot drop database ${dbName}: ${JSON.stringify(e)}`);
+    }
+  }
+};
+
 module.exports.checkError = function (err) {
   assert.ok(!err, JSON.stringify(err));
 };