Adding upstream version 2.5.1.

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

analysis/token/length/length_test.go

@@ -0,0 +1,99 @@
+//  Copyright (c) 2014 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 length
+
+import (
+	"testing"
+
+	"github.com/blevesearch/bleve/v2/analysis"
+)
+
+func TestLengthFilter(t *testing.T) {
+
+	inputTokenStream := analysis.TokenStream{
+		&analysis.Token{
+			Term: []byte("1"),
+		},
+		&analysis.Token{
+			Term: []byte("two"),
+		},
+		&analysis.Token{
+			Term: []byte("three"),
+		},
+	}
+
+	lengthFilter := NewLengthFilter(3, 4)
+	ouputTokenStream := lengthFilter.Filter(inputTokenStream)
+	if len(ouputTokenStream) != 1 {
+		t.Fatalf("expected 1 output token")
+	}
+	if string(ouputTokenStream[0].Term) != "two" {
+		t.Errorf("expected term `two`, got `%s`", ouputTokenStream[0].Term)
+	}
+}
+
+func TestLengthFilterNoMax(t *testing.T) {
+
+	inputTokenStream := analysis.TokenStream{
+		&analysis.Token{
+			Term: []byte("1"),
+		},
+		&analysis.Token{
+			Term: []byte("two"),
+		},
+		&analysis.Token{
+			Term: []byte("three"),
+		},
+	}
+
+	lengthFilter := NewLengthFilter(3, -1)
+	ouputTokenStream := lengthFilter.Filter(inputTokenStream)
+	if len(ouputTokenStream) != 2 {
+		t.Fatalf("expected 2 output token")
+	}
+	if string(ouputTokenStream[0].Term) != "two" {
+		t.Errorf("expected term `two`, got `%s`", ouputTokenStream[0].Term)
+	}
+	if string(ouputTokenStream[1].Term) != "three" {
+		t.Errorf("expected term `three`, got `%s`", ouputTokenStream[0].Term)
+	}
+}
+
+func TestLengthFilterNoMin(t *testing.T) {
+
+	inputTokenStream := analysis.TokenStream{
+		&analysis.Token{
+			Term: []byte("1"),
+		},
+		&analysis.Token{
+			Term: []byte("two"),
+		},
+		&analysis.Token{
+			Term: []byte("three"),
+		},
+	}
+
+	lengthFilter := NewLengthFilter(-1, 4)
+	ouputTokenStream := lengthFilter.Filter(inputTokenStream)
+	if len(ouputTokenStream) != 2 {
+		t.Fatalf("expected 2 output token")
+	}
+	if string(ouputTokenStream[0].Term) != "1" {
+		t.Errorf("expected term `1`, got `%s`", ouputTokenStream[0].Term)
+	}
+	if string(ouputTokenStream[1].Term) != "two" {
+		t.Errorf("expected term `two`, got `%s`", ouputTokenStream[0].Term)
+	}
+}