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// Copyright 2022 The Prometheus 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 textparse
import (
"testing"
"github.com/stretchr/testify/require"
"github.com/prometheus/prometheus/model/labels"
)
func TestNewParser(t *testing.T) {
t.Parallel()
requirePromParser := func(t *testing.T, p Parser) {
require.NotNil(t, p)
_, ok := p.(*PromParser)
require.True(t, ok)
}
requireOpenMetricsParser := func(t *testing.T, p Parser) {
require.NotNil(t, p)
_, ok := p.(*OpenMetricsParser)
require.True(t, ok)
}
for name, tt := range map[string]*struct {
contentType string
validateParser func(*testing.T, Parser)
err string
}{
"empty-string": {
validateParser: requirePromParser,
},
"invalid-content-type-1": {
contentType: "invalid/",
validateParser: requirePromParser,
err: "expected token after slash",
},
"invalid-content-type-2": {
contentType: "invalid/invalid/invalid",
validateParser: requirePromParser,
err: "unexpected content after media subtype",
},
"invalid-content-type-3": {
contentType: "/",
validateParser: requirePromParser,
err: "no media type",
},
"invalid-content-type-4": {
contentType: "application/openmetrics-text; charset=UTF-8; charset=utf-8",
validateParser: requirePromParser,
err: "duplicate parameter name",
},
"openmetrics": {
contentType: "application/openmetrics-text",
validateParser: requireOpenMetricsParser,
},
"openmetrics-with-charset": {
contentType: "application/openmetrics-text; charset=utf-8",
validateParser: requireOpenMetricsParser,
},
"openmetrics-with-charset-and-version": {
contentType: "application/openmetrics-text; version=1.0.0; charset=utf-8",
validateParser: requireOpenMetricsParser,
},
"plain-text": {
contentType: "text/plain",
validateParser: requirePromParser,
},
"plain-text-with-version": {
contentType: "text/plain; version=0.0.4",
validateParser: requirePromParser,
},
"some-other-valid-content-type": {
contentType: "text/html",
validateParser: requirePromParser,
},
} {
t.Run(name, func(t *testing.T) {
tt := tt // Copy to local variable before going parallel.
t.Parallel()
p, err := New([]byte{}, tt.contentType, false, labels.NewSymbolTable())
tt.validateParser(t, p)
if tt.err == "" {
require.NoError(t, err)
} else {
require.Error(t, err)
require.Contains(t, err.Error(), tt.err)
}
})
}
}
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