Add robot functionnal test

tests/functional/database/database-mysql.robot

@@ -0,0 +1,33 @@
+*** Settings ***
+Documentation       Database Mysql plugin
+
+Library             Database
+
+Test Timeout        120s
+
+
+*** Variables ***
+${CENTREON_PLUGINS}         ${CURDIR}${/}..${/}..${/}..${/}src${/}centreon_plugins.pl
+
+${CMD}                      perl ${CENTREON_PLUGINS} --plugin=database::mysql::plugin
+
+&{sql_string_test1}
+...                         result=UNKNOWN: Need to specify data_source arguments.
+@{sql_string_tests}
+...                         &{sql_string_test1}
+
+
+*** Test Cases ***
+Database Mysql sql string mode
+    [Documentation]    Mode sql string (common protocol database)
+    [Tags]    database    mysql    sql-string
+    FOR    ${sql_string_test}    IN    @{sql_string_tests}
+        ${command}    Catenate
+        ...    ${CMD}
+        ...    --mode=sql-string
+        ${output}    Run    ${command}
+        Should Be Equal As Strings
+        ...    ${output}
+        ...    ${sql_string_test.result}
+        ...    Wrong output result for compliance of ${sql_string_test.result}.{\n}Command output:{\n}${output}
+    END