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/*
Copyright 2020 The Kubernetes Authors.
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 filters
import (
"net/http/httptest"
"reflect"
"testing"
)
func Test_recorder_AddWarning(t *testing.T) {
type args struct {
agent string
text string
}
tests := []struct {
name string
args []args
expect []string
}{
{
name: "empty",
args: []args{},
expect: nil,
},
{
name: "empty values",
args: []args{{agent: "", text: ""}},
expect: nil,
},
{
name: "empty agent",
args: []args{{agent: "", text: "mytext"}},
expect: []string{`299 - "mytext"`},
},
{
name: "simple",
args: []args{{agent: "myagent", text: "mytext"}},
expect: []string{`299 myagent "mytext"`},
},
{
name: "duplicate text",
args: []args{
{agent: "myagent", text: "mytext"},
{agent: "myagent2", text: "mytext"},
},
expect: []string{`299 myagent "mytext"`},
},
{
name: "multiple",
args: []args{
{agent: "", text: "mytext1"},
{agent: "", text: "mytext2"},
{agent: "", text: "mytext3"},
},
expect: []string{
`299 - "mytext1"`,
`299 - "mytext2"`,
`299 - "mytext3"`,
},
},
{
name: "invalid agent",
args: []args{{agent: "my agent", text: "mytext"}},
expect: nil,
},
{
name: "invalid text",
args: []args{{agent: "myagent", text: "my\ntext"}},
expect: nil,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
responseRecorder := httptest.NewRecorder()
warningRecorder := &recorder{writer: responseRecorder}
for _, arg := range tt.args {
warningRecorder.AddWarning(arg.agent, arg.text)
}
if !reflect.DeepEqual(tt.expect, responseRecorder.Header()["Warning"]) {
t.Errorf("expected\n%#v\ngot\n%#v", tt.expect, responseRecorder.Header()["Warning"])
}
})
}
}
func TestTruncation(t *testing.T) {
originalTotalRunes, originalItemRunes := truncateAtTotalRunes, truncateItemRunes
truncateAtTotalRunes, truncateItemRunes = 25, 5
defer func() {
truncateAtTotalRunes, truncateItemRunes = originalTotalRunes, originalItemRunes
}()
responseRecorder := httptest.NewRecorder()
warningRecorder := &recorder{writer: responseRecorder}
// add items longer than the individual length
warningRecorder.AddWarning("", "aaaaaaaaaa") // long item
warningRecorder.AddWarning("-", "aaaaaaaaaa") // duplicate item
warningRecorder.AddWarning("", "bb") // short item
warningRecorder.AddWarning("", "ccc") // short item
warningRecorder.AddWarning("", "Iñtërnâtiô") // long item
// check they are preserved
if e, a := []string{`299 - "aaaaaaaaaa"`, `299 - "bb"`, `299 - "ccc"`, `299 - "Iñtërnâtiô"`}, responseRecorder.Header()["Warning"]; !reflect.DeepEqual(e, a) {
t.Errorf("expected\n%#v\ngot\n%#v", e, a)
}
// add an item that exceeds the length and triggers truncation, reducing existing items to 15 runes
warningRecorder.AddWarning("", "e") // triggering item, 16 total
warningRecorder.AddWarning("", "ffffffffff") // long item to get truncated, 21 total
warningRecorder.AddWarning("", "ffffffffff") // duplicate item
warningRecorder.AddWarning("", "gggggggggg") // item to get truncated, 26 total
warningRecorder.AddWarning("", "h") // item to get ignored since we're over our limit
// check that existing items are truncated, and order preserved
if e, a := []string{`299 - "aaaaa"`, `299 - "bb"`, `299 - "ccc"`, `299 - "Iñtër"`, `299 - "e"`, `299 - "fffff"`, `299 - "ggggg"`}, responseRecorder.Header()["Warning"]; !reflect.DeepEqual(e, a) {
t.Errorf("expected\n%#v\ngot\n%#v", e, a)
}
}
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