fix(lint): fixed linting on test suites

Author: fenying

test/integration/test-pool-acquire-timeout.js

@@ -9,40 +9,40 @@ const poolConfig = common.getConfig();
 
 const ACQUITE_TIMEOUT = 500;
 const poolWithAcquireTimeout = new mysql.createPool({
-    ...poolConfig,
-    acquireTimeout: ACQUITE_TIMEOUT,
-    connectionLimit: 2
+  ...poolConfig,
+  acquireTimeout: ACQUITE_TIMEOUT,
+  connectionLimit: 2
 });
 
-poolWithAcquireTimeout.getConnection(function (err, c1) {
-    assert.equal(!!c1, true);
+poolWithAcquireTimeout.getConnection((err, c1) => {
+  assert.equal(!!c1, true);
+  assert.ifError(err);
+  poolWithAcquireTimeout.getConnection((err, c2) => {
     assert.ifError(err);
-    poolWithAcquireTimeout.getConnection(function (err, c2) {
-        assert.ifError(err);
-        assert.equal(!!c2, true);
-        const C3_STARTED_AT = Date.now();
-        poolWithAcquireTimeout.getConnection(function (e3, c3) {
-            const C3_DONE_AT = Date.now();
+    assert.equal(!!c2, true);
+    const C3_STARTED_AT = Date.now();
+    poolWithAcquireTimeout.getConnection((e3, c3) => {
+      const C3_DONE_AT = Date.now();
 
-            poolWithAcquireTimeout.releaseConnection(c1);
+      poolWithAcquireTimeout.releaseConnection(c1);
 
-            poolWithAcquireTimeout.getConnection(function (e4, c4) {
+      poolWithAcquireTimeout.getConnection((e4, c4) => {
 
-                test('Pool With Acquire Timeout', {
-                    'timeout of pool is full': () => {
-                        assert.equal(e3 !== null, true);
-                        assert.equal(!c3, true);
-                        assert.equal(C3_DONE_AT - C3_STARTED_AT >= ACQUITE_TIMEOUT, true);
-                        assert.equal(C3_DONE_AT - C3_STARTED_AT < ACQUITE_TIMEOUT * 2, true);
-                    },
-                    'ok if pool is not full': () => {
-                        assert.equal(e4 === null, true);
-                        assert.equal(!!c4, true);
-                    }
-                });
-    
-                poolWithAcquireTimeout.releaseConnection(c4);
-            });
+        test('Pool With Acquire Timeout', {
+          'timeout of pool is full': () => {
+            assert.equal(e3 !== null, true);
+            assert.equal(!c3, true);
+            assert.equal(C3_DONE_AT - C3_STARTED_AT >= ACQUITE_TIMEOUT, true);
+            assert.equal(C3_DONE_AT - C3_STARTED_AT < ACQUITE_TIMEOUT * 2, true);
+          },
+          'ok if pool is not full': () => {
+            assert.equal(e4 === null, true);
+            assert.equal(!!c4, true);
+          }
         });
+    
+        poolWithAcquireTimeout.releaseConnection(c4);
+      });
     });
+  });
 });