mirror of https://github.com/knative/pkg.git
91 lines
2.7 KiB
Go
91 lines
2.7 KiB
Go
/*
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Copyright 2019 The Knative Authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package tracing_test
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import (
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"errors"
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"testing"
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. "knative.dev/pkg/tracing"
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"knative.dev/pkg/tracing/config"
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. "knative.dev/pkg/tracing/testing"
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)
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func TestOpenCensusTracerGlobalLifecycle(t *testing.T) {
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reporter, co := FakeZipkinExporter()
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defer reporter.Close()
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oct := NewOpenCensusTracer(co)
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// Apply a config to make us the global OCT
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if err := oct.ApplyConfig(&config.Config{}); err != nil {
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t.Fatalf("Failed to ApplyConfig on tracer: %v", err)
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}
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otherOCT := NewOpenCensusTracer(co)
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if err := otherOCT.ApplyConfig(&config.Config{}); err == nil {
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t.Fatalf("Expected error when applying config to second OCT.")
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}
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if err := oct.Finish(); err != nil {
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t.Fatalf("Failed to finish OCT: %v", err)
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}
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if err := otherOCT.ApplyConfig(&config.Config{}); err != nil {
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t.Fatalf("Failed to ApplyConfig on OtherOCT after finishing OCT: %v", err)
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}
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otherOCT.Finish()
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}
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func TestOpenCensusTraceApplyConfigFailingConfigOption(t *testing.T) {
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coErr := errors.New("configOption error")
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oct := NewOpenCensusTracer(func(c *config.Config) error {
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if c != nil {
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return coErr
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}
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return nil
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})
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if err := oct.ApplyConfig(&config.Config{}); err != coErr {
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t.Errorf("Expected error not seen. Got %q. Want %q", err, coErr)
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}
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if err := oct.Finish(); err != nil {
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t.Errorf("Unexpected error Finishing: %q", err)
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}
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}
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func TestOpenCensusTraceFinishFailingConfigOption(t *testing.T) {
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coErr := errors.New("configOption error")
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errToReturn := coErr
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oct := NewOpenCensusTracer(func(c *config.Config) error {
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if c == nil {
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// We need finish to work on the second try, otherwise we have mutated global state. So,
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// make sure that next run through, the returned error is nil.
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e := errToReturn
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errToReturn = nil
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return e
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}
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return nil
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})
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if err := oct.ApplyConfig(&config.Config{}); err != nil {
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t.Errorf("Unexpected error Applying Config: %q", err)
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}
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if err := oct.Finish(); err != coErr {
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t.Errorf("Expected error not seen. Got %q. Want %q", err, coErr)
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}
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if err := oct.Finish(); err != nil {
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t.Errorf("Unexpected error on second Finish (global state mutated, other tests may fail oddly): %q", err)
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}
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}
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