Add support for array of enum

fixes #338
2017-10-17 20:24:55 -05:00
parent 3453586e89
commit 5ba28cf2c5
3 changed files with 366 additions and 0 deletions
@@ -0,0 +1,150 @@
+package pgtype_test
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/jackc/pgx/pgtype"
+	"github.com/jackc/pgx/pgtype/testutil"
+)
+
+func TestEnumArrayTranscode(t *testing.T) {
+	setupConn := testutil.MustConnectPgx(t)
+	defer testutil.MustClose(t, setupConn)
+
+	if _, err := setupConn.Exec("drop type if exists color"); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := setupConn.Exec("create type color as enum ('red', 'green', 'blue')"); err != nil {
+		t.Fatal(err)
+	}
+
+	testutil.TestSuccessfulTranscode(t, "color[]", []interface{}{
+		&pgtype.EnumArray{
+			Elements:   nil,
+			Dimensions: nil,
+			Status:     pgtype.Present,
+		},
+		&pgtype.EnumArray{
+			Elements: []pgtype.GenericText{
+				pgtype.GenericText{String: "red", Status: pgtype.Present},
+				pgtype.GenericText{Status: pgtype.Null},
+			},
+			Dimensions: []pgtype.ArrayDimension{{Length: 2, LowerBound: 1}},
+			Status:     pgtype.Present,
+		},
+		&pgtype.EnumArray{Status: pgtype.Null},
+		&pgtype.EnumArray{
+			Elements: []pgtype.GenericText{
+				pgtype.GenericText{String: "red", Status: pgtype.Present},
+				pgtype.GenericText{String: "green", Status: pgtype.Present},
+				pgtype.GenericText{String: "blue", Status: pgtype.Present},
+				pgtype.GenericText{String: "red", Status: pgtype.Present},
+			},
+			Dimensions: []pgtype.ArrayDimension{
+				{Length: 2, LowerBound: 4},
+				{Length: 2, LowerBound: 2},
+			},
+			Status: pgtype.Present,
+		},
+	})
+}
+
+func TestEnumArrayArraySet(t *testing.T) {
+	successfulTests := []struct {
+		source interface{}
+		result pgtype.EnumArray
+	}{
+		{
+			source: []string{"foo"},
+			result: pgtype.EnumArray{
+				Elements:   []pgtype.GenericText{{String: "foo", Status: pgtype.Present}},
+				Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
+				Status:     pgtype.Present},
+		},
+		{
+			source: (([]string)(nil)),
+			result: pgtype.EnumArray{Status: pgtype.Null},
+		},
+	}
+
+	for i, tt := range successfulTests {
+		var r pgtype.EnumArray
+		err := r.Set(tt.source)
+		if err != nil {
+			t.Errorf("%d: %v", i, err)
+		}
+
+		if !reflect.DeepEqual(r, tt.result) {
+			t.Errorf("%d: expected %v to convert to %v, but it was %v", i, tt.source, tt.result, r)
+		}
+	}
+}
+
+func TestEnumArrayArrayAssignTo(t *testing.T) {
+	var stringSlice []string
+	type _stringSlice []string
+	var namedStringSlice _stringSlice
+
+	simpleTests := []struct {
+		src      pgtype.EnumArray
+		dst      interface{}
+		expected interface{}
+	}{
+		{
+			src: pgtype.EnumArray{
+				Elements:   []pgtype.GenericText{{String: "foo", Status: pgtype.Present}},
+				Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
+				Status:     pgtype.Present,
+			},
+			dst:      &stringSlice,
+			expected: []string{"foo"},
+		},
+		{
+			src: pgtype.EnumArray{
+				Elements:   []pgtype.GenericText{{String: "bar", Status: pgtype.Present}},
+				Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
+				Status:     pgtype.Present,
+			},
+			dst:      &namedStringSlice,
+			expected: _stringSlice{"bar"},
+		},
+		{
+			src:      pgtype.EnumArray{Status: pgtype.Null},
+			dst:      &stringSlice,
+			expected: (([]string)(nil)),
+		},
+	}
+
+	for i, tt := range simpleTests {
+		err := tt.src.AssignTo(tt.dst)
+		if err != nil {
+			t.Errorf("%d: %v", i, err)
+		}
+
+		if dst := reflect.ValueOf(tt.dst).Elem().Interface(); !reflect.DeepEqual(dst, tt.expected) {
+			t.Errorf("%d: expected %v to assign %v, but result was %v", i, tt.src, tt.expected, dst)
+		}
+	}
+
+	errorTests := []struct {
+		src pgtype.EnumArray
+		dst interface{}
+	}{
+		{
+			src: pgtype.EnumArray{
+				Elements:   []pgtype.GenericText{{Status: pgtype.Null}},
+				Dimensions: []pgtype.ArrayDimension{{LowerBound: 1, Length: 1}},
+				Status:     pgtype.Present,
+			},
+			dst: &stringSlice,
+		},
+	}
+
+	for i, tt := range errorTests {
+		err := tt.src.AssignTo(tt.dst)
+		if err == nil {
+			t.Errorf("%d: expected error but none was returned (%v -> %v)", i, tt.src, tt.dst)
+		}
+	}
+}