Adding upstream version 2.5.1.

Signed-off-by: Daniel Baumann <daniel@debian.org>

analysis/lang/pl/stempel/strenum_test.go

@@ -0,0 +1,61 @@
+//  Copyright (c) 2018 Couchbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 		http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package stempel
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+	"testing"
+)
+
+func TestStrenumNext(t *testing.T) {
+
+	tests := []struct {
+		in     []rune
+		up     bool
+		expect []rune
+	}{
+		{
+			in:     []rune{'h', 'e', 'l', 'l', 'o'},
+			up:     true,
+			expect: []rune{'h', 'e', 'l', 'l', 'o'},
+		},
+		{
+			in:     []rune{'h', 'e', 'l', 'l', 'o'},
+			up:     false,
+			expect: []rune{'o', 'l', 'l', 'e', 'h'},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(fmt.Sprintf("%s-up-%t", string(test.in), test.up), func(t *testing.T) {
+			strenum := newStrEnum(test.in, test.up)
+			var got []rune
+			next, err := strenum.next()
+			for err == nil {
+				got = append(got, next)
+				next, err = strenum.next()
+			}
+			if err != io.EOF {
+				t.Errorf("next got err: %v", err)
+			}
+			if !reflect.DeepEqual(got, test.expect) {
+				t.Errorf("expected %v, got %v", test.expect, got)
+			}
+		})
+	}
+
+}