From e08a188515546234166a30756f05cedd04019ac4 Mon Sep 17 00:00:00 2001
From: Robert Lin <robertlin1@gmail.com>
Date: Sun, 10 Mar 2019 23:38:11 -0700
Subject: [PATCH 1/3] Fix enum handling

---
 values.go | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/values.go b/values.go
index 0c571d74..e7e6c1f7 100644
--- a/values.go
+++ b/values.go
@@ -189,7 +189,15 @@ func encodePreparedStatementArgument(ci *pgtype.ConnInfo, buf []byte, oid pgtype
 
 		sp := len(buf)
 		buf = pgio.AppendInt32(buf, -1)
-		argBuf, err := value.(pgtype.BinaryEncoder).EncodeBinary(ci, buf)
+		var argBuf []byte
+		switch valueEncoder := value.(type) {
+		case pgtype.BinaryEncoder:
+			argBuf, err = valueEncoder.EncodeBinary(ci, buf)
+		case pgtype.TextEncoder:
+			argBuf, err = valueEncoder.EncodeText(ci, buf)
+		default:
+			return nil, fmt.Errorf("invalid encode type %v", valueEncoder)
+		}
 		if err != nil {
 			return nil, err
 		}

From 9a3e403bdf10b1c850c0fc6bccad52415741d0b5 Mon Sep 17 00:00:00 2001
From: Robert Lin <robertlin1@gmail.com>
Date: Sun, 10 Mar 2019 23:38:34 -0700
Subject: [PATCH 2/3] Add rudementary enum transcode test

---
 values_test.go | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/values_test.go b/values_test.go
index ddaf5468..e05dab37 100644
--- a/values_test.go
+++ b/values_test.go
@@ -50,6 +50,29 @@ func TestDateTranscode(t *testing.T) {
 	}
 }
 
+func TestEnumTranscode(t *testing.T) {
+	t.Parallel()
+
+	conn := mustConnect(t, *defaultConnConfig)
+	defer closeConn(t, conn)
+
+	_, err := conn.Exec("create type some_type as enum ('hello-world', 'goodbye-world')")
+	if err != nil {
+		t.Fatalf("Unexpected failure in test setup: %v", err)
+	}
+	defer conn.Exec("drop type some_type")
+
+	var out string
+	var actual = "hello-world"
+	err = conn.QueryRow("select $1::some_type", actual).Scan(&out)
+	if err != nil {
+		t.Fatalf("Unexpected failure on QueryRow Scan: %v", err)
+	}
+	if actual != out {
+		t.Errorf("Did not transcode enum successfully: %s is not %s", out, actual)
+	}
+}
+
 func TestTimestampTzTranscode(t *testing.T) {
 	t.Parallel()
 

From 0a8645df197181e4d424e090c9c7f42175b035cd Mon Sep 17 00:00:00 2001
From: Robert Lin <robertlin1@gmail.com>
Date: Mon, 11 Mar 2019 00:14:06 -0700
Subject: [PATCH 3/3] Remove test

---
 values_test.go | 23 -----------------------
 1 file changed, 23 deletions(-)

diff --git a/values_test.go b/values_test.go
index e05dab37..ddaf5468 100644
--- a/values_test.go
+++ b/values_test.go
@@ -50,29 +50,6 @@ func TestDateTranscode(t *testing.T) {
 	}
 }
 
-func TestEnumTranscode(t *testing.T) {
-	t.Parallel()
-
-	conn := mustConnect(t, *defaultConnConfig)
-	defer closeConn(t, conn)
-
-	_, err := conn.Exec("create type some_type as enum ('hello-world', 'goodbye-world')")
-	if err != nil {
-		t.Fatalf("Unexpected failure in test setup: %v", err)
-	}
-	defer conn.Exec("drop type some_type")
-
-	var out string
-	var actual = "hello-world"
-	err = conn.QueryRow("select $1::some_type", actual).Scan(&out)
-	if err != nil {
-		t.Fatalf("Unexpected failure on QueryRow Scan: %v", err)
-	}
-	if actual != out {
-		t.Errorf("Did not transcode enum successfully: %s is not %s", out, actual)
-	}
-}
-
 func TestTimestampTzTranscode(t *testing.T) {
 	t.Parallel()