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Copy pathfeatures_test.go
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109 lines (90 loc) · 2.94 KB
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// Copyright 2020 Google LLC All Rights Reserved.
//
// 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 runtime
import (
"os"
"strings"
"testing"
"github.com/spf13/pflag"
"github.com/spf13/viper"
"github.com/stretchr/testify/assert"
)
func TestFeatures(t *testing.T) {
t.Parallel()
FeatureTestMutex.Lock()
defer FeatureTestMutex.Unlock()
orig := featureDefaults
// stable feature flag state
featureDefaults = map[Feature]bool{
FeatureExample: true,
Feature("Test"): false,
}
t.Run("invalid Feature gate", func(t *testing.T) {
err := ParseFeatures("Foo")
assert.EqualError(t, err, "Feature Gate \"Foo\" is not a valid Feature Gate")
})
t.Run("Empty query string", func(t *testing.T) {
err := ParseFeatures("")
assert.NoError(t, err)
assert.True(t, FeatureEnabled(FeatureExample))
assert.Equal(t, "Example=true&Test=false", EncodeFeatures())
})
t.Run("query string", func(t *testing.T) {
err := ParseFeatures("Example=0&Test=1")
assert.NoError(t, err)
assert.False(t, FeatureEnabled(FeatureExample))
assert.True(t, FeatureEnabled(Feature("Test")))
assert.Equal(t, "Example=false&Test=true", EncodeFeatures())
err = ParseFeatures(EncodeFeatures())
assert.NoError(t, err)
assert.False(t, FeatureEnabled(FeatureExample))
assert.True(t, FeatureEnabled(Feature("Test")))
})
t.Run("Error on query parsing", func(t *testing.T) {
err := ParseFeatures("Example=foobar")
assert.Error(t, err)
})
t.Run("parse env vars", func(t *testing.T) {
assert.NoError(t, os.Setenv("FEATURE_GATES", "Test=true"))
FeaturesBindFlags()
pflag.Parse()
viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
assert.NoError(t, FeaturesBindEnv())
assert.NoError(t, ParseFeaturesFromEnv())
assert.True(t, FeatureEnabled(Feature("Test")))
assert.True(t, FeatureEnabled(FeatureExample))
})
// reset things back the way they were
featureDefaults = orig
}
func TestEnableAllFeatures(t *testing.T) {
t.Parallel()
FeatureTestMutex.Lock()
defer FeatureTestMutex.Unlock()
orig := featureDefaults
// stable feature flag state
featureDefaults = map[Feature]bool{
FeatureExample: true,
Feature("Test"): false,
}
err := ParseFeatures("Example=0&Test=0")
assert.NoError(t, err)
assert.False(t, FeatureEnabled("Example"))
assert.False(t, FeatureEnabled("Test"))
EnableAllFeatures()
assert.True(t, FeatureEnabled("Example"))
assert.True(t, FeatureEnabled("Test"))
// reset things back the way they were
featureDefaults = orig
}