run library tests in integration test applications. Update README to

reflect how the tests can be run.

Author: schveiguy

README.md

@@ -139,8 +139,7 @@ Developers - How to run the test suite
 --------------------------------------
 
 Unittests that do not require an actual server are located in the library
-codebase. At the moment, there is no mechanism for running just these tests
-(this will likely change in the future).
+codebase. You can run just these tests using `dub test`.
 
 Unittests that require a working server are all located in the
 [integration-tests](integration-tests) subpackage. Due to a [dub
@@ -155,6 +154,7 @@ issuing the commands:
 dub run :integration-tests-phobos
 dub run :integration-tests-vibe
 ```
+This will also run the library tests as well as the integration tests.
 
 The first time you run an integration test, the file `testConnectionStr.txt`
 will be created in your current directory

dub.sdl

@@ -12,3 +12,10 @@ subPackage "./integration-tests"
 subPackage "./integration-tests-vibe"
 subPackage "./integration-tests-phobos"
 subPackage "./testconn"
+
+configuration "library" {
+}
+configuration "unittest" {
+        buildOptions "unittests" "debugInfo" "debugMode"
+		debugVersions "MYSQLN_TESTS"
+}

integration-tests/dub.sdl

@@ -5,6 +5,7 @@ copyright   "Copyright (c) 2011-2021 Steve Teale, James W. Oliphant, Simen Endsj
 authors     "Steve Teale" "James W. Oliphant" "Simen Endsjø" "Sönke Ludwig" "Sergey Shamov" "Nick Sabalausky" "Steven Schveighoffer"
 
 dependency "mysql-native" path="../"
+subConfiguration "mysql-native" "unittest"
 dependency "unit-threaded" version="~>1.0.15"
 debugVersions "MYSQLN_TESTS"
 versions "unitUnthreaded"

integration-tests/source/app.d

@@ -2,6 +2,9 @@ import mysql.test.common;
 import mysql.test.integration;
 import mysql.test.regression;
 import mysql.maintests;
+import mysql.protocol.packet_helpers;
+import mysql.connection;
+import mysql.escape;
 
 import unit_threaded;
 
@@ -12,6 +15,9 @@ int main(string[] args)
                           "mysql.maintests",
                           "mysql.test.common",
                           "mysql.test.integration",
-                          "mysql.test.regression"
+                          "mysql.test.regression",
+                          "mysql.protocol.packet_helpers",
+                          "mysql.connection",
+                          "mysql.escape"
                           );
 }