Roll metabase.driver.generic-sql.connection into

metabase.driver.generic-sql since it only contained a single fn

src/metabase/driver/generic_sql.clj

@@ -5,8 +5,7 @@
             [metabase.driver :as driver]
             (metabase.driver [interface :refer :all]
                              [sync :as driver-sync])
-            (metabase.driver.generic-sql [connection :as connection]
-                                         [query-processor :as qp]
+            (metabase.driver.generic-sql [query-processor :as qp]
                                          [util :refer :all])))
 
 (defrecord SqlDriver [column->base-type
@@ -15,13 +14,15 @@
                       sql-string-length-fn]
   IDriver
   ;; Connection
-  (can-connect? [_ database]
-    (connection/test-connection (-> database
-                                    database->connection-details
-                                    connection-details->connection-spec)))
+  (can-connect? [this database]
+    (can-connect-with-details? this (database->connection-details database)))
 
   (can-connect-with-details? [_ details]
-    (connection/test-connection (connection-details->connection-spec details)))
+    (let [connection (connection-details->connection-spec details)]
+      (= 1 (-> (exec-raw connection "SELECT 1" :results)
+               first
+               vals
+               first))))
 
   ;; Query Processing
   (process-query [_ query]

src/metabase/driver/generic_sql/connection.clj

-(ns metabase.driver.generic-sql.connection
-  (:require [clojure.tools.logging :as log]
-            [korma.core :as k]
-            [metabase.driver :as driver]))
-
-(defn test-connection
-  "Test whether we can performa a very simple SQL query against CONNECTION.
-   (This will probably throw an Exception if we cannot).
-
-    (test-connection (korma.db/postgres {:db \"metabase\", :port 5432, ...})) -> true"
-  [connection]
-  (= 1 (-> (k/exec-raw connection "SELECT 1" :results)
-           first
-           vals
-           first)))

test/metabase/driver/generic_sql/connection_test.clj

@@ -2,7 +2,6 @@
   (:require [expectations :refer :all]
             [metabase.db :refer [sel]]
             [metabase.driver :as driver]
-            [metabase.driver.generic-sql.connection :refer :all]
             [metabase.models.database :refer [Database]]
             [metabase.test-data :refer :all]))