Behat Step required for verifying that text exists/not exists within an element

[Steven]

BUG SUMMARY: I am trying to verify that a Group is not displayed in the search results list on the "Groups" page if I do not own a group. If I just use And I should see "text" step. The script will pass because the group I do not own is a group that I am a member of. The text will display in the profile side block on the page
NOTE: Behat script is found here https://reviews.mahara.org/#/c/10181/

ACCEPTANCE CRITERIA:

1) Script should verify that text exists or does not exist within a specific part of a page (ie. in the search result table of the page)

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Environment tested: Master
Browser tested: Chrome

PRECONDITIONS:
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1) Behat script can be found here https://reviews.mahara.org/#/c/10181/

TEST STEPS: # User selects Groups I own
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Given I log in as "UserC" with password "Kupuh1pa!"
When I choose "Groups" in "Engage" from main menu
When I select "Groups I own" from "Filter"
And I press "Search"
Then I should not see "GroupA"

EXPECTED RESULT: The search results do not display any groups and the test script should fail

ACTUAL RESULT: The search results do not display any groups and the test script passes - because the Text GroupA is displayed in the profile side block on the page