database/sql: add Drivers, returning list of registered drivers
Fixes #7969.
LGTM=bradfitz
R=bradfitz
CC=golang-codereviews
https://golang.org/cl/158950043
diff --git a/src/database/sql/fakedb_test.go b/src/database/sql/fakedb_test.go
index c7db0dd..171c322 100644
--- a/src/database/sql/fakedb_test.go
+++ b/src/database/sql/fakedb_test.go
@@ -10,6 +10,7 @@
"fmt"
"io"
"log"
+ "sort"
"strconv"
"strings"
"sync"
@@ -126,6 +127,27 @@
Register("test", fdriver)
}
+func contains(list []string, y string) bool {
+ for _, x := range list {
+ if x == y {
+ return true
+ }
+ }
+ return false
+}
+
+type Dummy struct {
+ driver.Driver
+}
+
+func TestDrivers(t *testing.T) {
+ Register("invalid", Dummy{})
+ all := Drivers()
+ if len(all) < 2 || !sort.StringsAreSorted(all) || !contains(all, "test") || !contains(all, "invalid") {
+ t.Fatalf("Drivers = %v, want sorted list with at least [invalid, test]", all)
+ }
+}
+
// Supports dsn forms:
// <dbname>
// <dbname>;<opts> (only currently supported option is `badConn`,
