Testing the AWS ODBC Driver for MySQL

Unit Tests

Build driver binaries with ENABLE_UNIT_TESTS command set to TRUE:

Windows

Add AWS SDK dynamic libraries path to environment variable path so the dlls could be found when unit tests are running.
- For release version unit tests, run the following command from repository root
```
cmake -S . -B build -G "Visual Studio 17 2022" -DMYSQL_DIR="C:\Program Files\MySQL\MySQL Server 8.3" -DMYSQLCLIENT_STATIC_LINKING=TRUE -DENABLE_UNIT_TESTS=TRUE
cmake --build build --config Release
```
- For debug version unit tests
  - Download MySQL debug binaries from MySQL::Download MySQL Community Server.
  - Extract the mysqlclient.lib from debug binaries. Make sure to backup your release version of mysqlclient.lib in MYSQL_DIR\lib, e.g. C:\Program Files\MySQL\MySQL Server 8.3\lib. Replace release version mysqlclient.lib with debug version of mysqlclient.lib.
  - Run the following command from repository root
```
cmake -S . -B build -G "Visual Studio 17 2022" -DMYSQL_DIR="C:\Program Files\MySQL\MySQL Server 8.3" -DMYSQLCLIENT_STATIC_LINKING=TRUE -DENABLE_UNIT_TESTS=TRUE -DCMAKE_BUILD_TYPE=Debug
cmake --build build --config Debug
```

MacOS

Run the following command from repository root

cmake -S . -B build -G "Unix Makefiles" -DMYSQLCLIENT_STATIC_LINKING=true -DODBC_INCLUDES=/usr/local/Cellar/libiodbc/3.52.16/include -DENABLE_UNIT_TESTS=TRUE
cmake --build build --config Release

Linux

Run the following command from repository root

cmake -S . -B build -G "Unix Makefiles" -DMYSQLCLIENT_STATIC_LINKING=true -DWITH_UNIXODBC=1 -DENABLE_UNIT_TESTS=TRUE
cmake --build build --config Release

To run the unit test, AWS SDK dynamic link libraries path needs to be added to system environment path firstly for Windows. The AWS SDK dynamic link libraries could be found under <repository root>/build/lib or <repository root>/build/lib/<build type>.

There are two options to run the unit tests:
- Run ctest directly from the build/unit_testing directory.
- Navigate to unit_testing/bin/Release and run unit_testing.exe. To specify a particular test or test suite, include --gtest_filter in the command.

The following example demonstrates running all the tests in the TopologyServiceTest suite with the .\unit_testing.exe --gtest_filter=TopologyServiceTest.* command:

PS C:\Other\dev\aws-mysql-odbc\unit_testing\bin\Release> .\unit_testing.exe --gtest_filter=TopologyServiceTest.*
Running main() from C:\Other\dev\aws-mysql-odbc\_deps\googletest-src\googletest\src\gtest_main.cc
Note: Google Test filter = TopologyServiceTest.*
[==========] Running 7 tests from 1 test suite.
[----------] Global test environment set-up.
[----------] 7 tests from TopologyServiceTest
[ RUN      ] TopologyServiceTest.TopologyQuery
[       OK ] TopologyServiceTest.TopologyQuery (0 ms)
[ RUN      ] TopologyServiceTest.MultiWriter
[       OK ] TopologyServiceTest.MultiWriter (0 ms)
[ RUN      ] TopologyServiceTest.CachedTopology
[       OK ] TopologyServiceTest.CachedTopology (0 ms)
[ RUN      ] TopologyServiceTest.QueryFailure
[       OK ] TopologyServiceTest.QueryFailure (0 ms)
[ RUN      ] TopologyServiceTest.StaleTopology
[       OK ] TopologyServiceTest.StaleTopology (1007 ms)
[ RUN      ] TopologyServiceTest.RefreshTopology
[       OK ] TopologyServiceTest.RefreshTopology (1013 ms)
[ RUN      ] TopologyServiceTest.ClearCache
[       OK ] TopologyServiceTest.ClearCache (0 ms)
[----------] 7 tests from TopologyServiceTest (2026 ms total)

[----------] Global test environment tear-down
[==========] 7 tests from 1 test suite ran. (2030 ms total)
[  PASSED  ] 7 tests.

Integration Tests

There are two types of integration tests you can run. One type is an integration test against a MySQL Server, and the other type consists of the two sets of integration tests specific to the failover functionality provided by the AWS ODBC Driver for MySQL.

Integration Tests Against A MySQL Server

Prerequisites

Install MySQL Server. See the build instructions for the desired system for instructions.
[Optional] Install Docker.

Steps

Specify the following environment variables on your target platform before building the driver:

Environment Variable	Description	Example	Platforms
TEST_DSN	The DSN to use for the test	AWSODBCDriverDSN	All systems
TEST_USERNAME	The name of the user with access to the MySQL Server	root	All systems
TEST_PASSWORD	The password for the test database user	root	All systems
TEST_DATABASE	The test database	test	All systems
DYLD_LIBRARY_PATH	The path to the library folder of your MySQL server directory	/usr/local/opt/mysql-client/lib	MacOS systems
ODBCINI	The path to your odbc.ini file	/etc/odbc.ini	MacOS and Linux systems
ODBCINSTINI	The path to your odbcinst.ini file	/etc/odbcinst.ini	MacOS and Linux systems

NOTE: The TEST_PASSWORD environment variable is only required if you have specified a password for the root user when installing the MySQL Server.

Build and install the driver for a specific platform as described in Installing the AWS ODBC Driver for MySQL.
Start the MySQL Server. You may either start a local server or use a docker images.
[Optional] To start the MySQL Server via a Docker image. Navigate to test/docker and execute docker-compose up -d to start the server in the background.
Navigate to the test directory and execute ctest.

Failover Specific Integration Tests

NOTE: This set of tests can only be run on Linux at the moment.

Prerequisites

Install JDK 8:
```
sudo apt-get install openjdk-8-jdk
```
Install Docker

Steps

NOTE: Running these tests will automatically create an Amazon Aurora MySQL DB cluster with at least 5 instances and may induce a cost. Ensure the test cluster is cleaned up after testing on the Amazon RDS Management Console.

This set of tests runs against an Amazon Aurora MySQL DB cluster with at least 5 instances. The test will automatically generate the required AWS MySQL DB cluster and instances if proper AWS credentials are set up. Refer to the documentation for information about setting up a development environment for Amazon Aurora.

Define the following environment variables:

Environment Variable	Description	Example
TEST_DSN	The DSN to use for the test.	AWSODBCDriverDSN
TEST_USERNAME	The name of the user with access to the Amazon Aurora MySQL DB cluster.	username
TEST_PASSWORD	The password for the test database user.	password
TEST_DB_CLUSTER_IDENTIFIER	The unique identifier for the Amazon Aurora MySQL DB cluster.	db-identifier
AWS_ACCESS_KEY_ID	The access key ID to your AWS account.	`ASIAIOSFODNN7EXAMPLE`
AWS_SECRET_ACCESS_KEY	The secret access key for your AWS account.	`wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY`
AWS_SESSION_TOKEN	The AWS session token for your AWS count. This is only required if you have set up temporary security credentials.	`AQoDYXdzEJr...`
DRIVER_PATH	The directory where the driver was built to.	`~/dev/aws-mysql-odbc/build`

Ensure the following packages are installed on Linux:

sudo apt-get update && sudo apt-get install \
            build-essential \
            libgtk-3-dev \
            libmysqlclient-dev \
            unixodbc \
            unixodbc-dev \
            curl  \
            libcurl4-openssl-dev

Build the driver with the following commands (the following commands assume the driver source code is stored within ~/dev/aws-mysql-odbc):

 cmake -E make_directory ~/dev/aws-mysql-odbc/build
 cmake -S . -B build \
     -G "Unix Makefiles" \
     -DCMAKE_BUILD_TYPE=Release \
     -DMYSQLCLIENT_STATIC_LINKING=TRUE \
     -DENABLE_INTEGRATION_TESTS=TRUE \
     -DWITH_UNIXODBC=1
 cmake --build build --config Release

Navigate to the testframework directory and run the command: ./gradlew --no-parallel --no-daemon test-failover --info.
Log files are written to the build directory as myodbc.log.

Performance Test Metrics

Failover Performance with EFM disabled

NetworkOutageDelayMillis	FailoverTimeoutMillis	ConnectTimeoutSecs	NetworkTimeoutSecs	MinFailoverTimeMillis	MaxFailoverTimeMillis	AvgFailoverTimeMillis
10000	30000	30	30	20187	20243	20209
15000	30000	30	30	15197	15229	15211
20000	30000	30	30	10185	10238	10211
25000	30000	30	30	5167	5230	5206
30000	30000	30	30	179	257	211

Enhanced Failure Monitoring Performance with failover disabled

NetworkOutageDelayMillis	DetectionTimeMillis	DetectionIntervalMillis	DetectionCount	MinFailureDectionTimeMillis	MaxFailureDetectionTimeMillis	AvgFailureDetectionTimeMillis
10000	30000	5000	3	35078	35084	35080
15000	30000	5000	3	30067	30074	30071
20000	30000	5000	3	25066	25074	25070
25000	30000	5000	3	20057	20068	20063
30000	30000	5000	3	20061	20072	20067
35000	30000	5000	3	20060	20071	20066
40000	30000	5000	3	20062	20072	20066
45000	30000	5000	3	20066	20072	20069
50000	30000	5000	3	20063	20075	20070

Failover Performance with Enhanced Failure Monitoring enabled

NetworkOutageDelayMillis	DetectionTimeMillis	DetectionIntervalMillis	DetectionCount	MinFailoverTimeMillis	MaxFailoverTimeMillis	AvgFailoverTimeMillis
10000	30000	5000	3	30310	35089	31121
15000	30000	5000	3	25309	30095	26133
20000	30000	5000	3	20331	25090	21135
25000	30000	5000	3	15316	20073	16916
30000	30000	5000	3	15325	20051	16897
35000	30000	5000	3	15311	20174	16927
40000	30000	5000	3	15314	20087	16127
45000	30000	5000	3	15309	20070	16123
50000	30000	5000	3	15309	20007	16100

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Testing the AWS ODBC Driver for MySQL

Unit Tests

Integration Tests

Integration Tests Against A MySQL Server

Prerequisites

Steps

Failover Specific Integration Tests

Prerequisites

Steps

Performance Test Metrics

Failover Performance with EFM disabled

Enhanced Failure Monitoring Performance with failover disabled

Failover Performance with Enhanced Failure Monitoring enabled

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Testing the AWS ODBC Driver for MySQL

Unit Tests

Integration Tests

Integration Tests Against A MySQL Server

Prerequisites

Steps

Failover Specific Integration Tests

Prerequisites

Steps

Performance Test Metrics

Failover Performance with EFM disabled

Enhanced Failure Monitoring Performance with failover disabled

Failover Performance with Enhanced Failure Monitoring enabled