postgres_test_utils.rb
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postgres_test_utils.rb
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	module PostgresTestUtils
	def sudo_and_log(vm, cmd)
	@logger.debug("Running command: '#{cmd}'")
	result = ""
	@env.vms[vm].channel.sudo("cd /tmp && #{cmd}") do \|ch, data\|
	result << data
	@logger.debug(data)
	end
	result
	end

	def sudo_psql_and_log(vm, psql_cmd, user = 'postgres', extras = '')
	sudo_and_log(vm, "su #{user} -c 'psql #{psql_cmd}' #{extras}")
	end

	def sudo_psql_and_expect_result(vm, psql_cmd, expected, user = 'postgres')
	result = sudo_and_log(vm, "su #{user} -c 'psql -t #{psql_cmd}'")

	result.sub!(/stdin: is not a tty/, '')
	result.strip!

	ok = result == expected
	@logger.debug("Expected: #{expected} => #{ok ? 'OK' : 'BAD'}")

	if !ok
	raise "An unexpected result returned - result: '#{result}' / expected: '#{expected}'"
	end
	end
	end