Browser opens many times while Geb testing - selenium-webdriver

Question

I wrote the following test for my simple Spring Boot Web application:
#SpringApplicationConfiguration(classes=[PDK])
#WebIntegrationTest
#DirtiesContext
class GebMainpageSpec extends GebSpec {
#Autowired
WebApplicationContext context;
def setup() {
System.setProperty("webdriver.chrome.driver", "chromedriver/win32/chromedriver.exe");
browser.driver = new ChromeDriver();
browser.baseUrl = "http://localhost:8080/";
}
def 'Static page present and works, check without pages'() {
when:
go ""
then:
assert title == "MyApp"
}
def 'Static page present and works, check WITH pages'() {
when:
to Mainpage
then:
LoginWithFormUsername.value() == "root"
}
}
These tests are apparently work, i.e. they pass or fail depending on page data.
The problem is that it opens TWO instances of Chrome browser to operate (by number of tests).
How to prevent that? May be reuse browser? Or may be close it after each test?
UPDATE
If I add something like below
def cleanupSpec() {
browser.driver.quit()
}
then all my tests startin to run twice, moreover, each second run they try with HtmlUnit (i.e. with "in memory" web browser, not Chrome).

Answer 1

You shouldn't instantiate the driver yourself when using GebSpec because it already handles the lifecycle of a driver instance through a browser instance it lazy initializes in it's getBrowser() method.
See the sections of The Book of Geb about how Geb interacts with WebDriver instances and about configuring the driver to be used via the config script to learn more.