100 lines
2.3 KiB
Go
100 lines
2.3 KiB
Go
// Copyright 2022 Google Inc. All Rights Reserved.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package metrics
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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)
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func Map[A any, B any](in []A, f func(A) B) []B {
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r := make([]B, len(in))
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for i, a := range in {
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r[i] = f(a)
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}
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return r
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}
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func TestEventNameWithDot(t *testing.T) {
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defer func() {
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r := fmt.Sprintf("%v", recover())
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if !strings.HasPrefix(r, "illegal event name") {
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t.Errorf("The code did not panic in the expected manner: %s", r)
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}
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}()
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eh := EventHandler{}
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eh.Begin("a.")
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}
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func TestEventNesting(t *testing.T) {
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eh := EventHandler{}
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eh.Begin("a")
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eh.Begin("b")
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eh.End("b")
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eh.Begin("c")
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eh.End("c")
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eh.End("a")
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expected := []string{"a.b", "a.c", "a"}
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actual := Map(eh.CompletedEvents(), func(e Event) string {
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return e.Id
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})
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if !reflect.DeepEqual(expected, actual) {
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t.Errorf("expected: %s actual %s", expected, actual)
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}
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}
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func TestEventOverlap(t *testing.T) {
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defer func() {
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r := fmt.Sprintf("%v", recover())
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if !strings.Contains(r, "unexpected scope end 'a'") {
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t.Errorf("expected panic but: %s", r)
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}
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}()
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eh := EventHandler{}
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eh.Begin("a")
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eh.Begin("b")
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eh.End("a")
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}
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func TestEventDuplication(t *testing.T) {
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eh := EventHandler{}
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eh.Begin("a")
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eh.Begin("b")
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eh.End("b")
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eh.Begin("b")
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eh.End("b")
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eh.End("a")
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defer func() {
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r := fmt.Sprintf("%v", recover())
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if !strings.HasPrefix(r, "duplicate event") {
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t.Errorf("expected panic but: %s", r)
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}
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}()
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eh.CompletedEvents()
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}
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func TestIncompleteEvent(t *testing.T) {
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eh := EventHandler{}
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eh.Begin("a")
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defer func() {
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r := fmt.Sprintf("%v", recover())
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if !strings.HasPrefix(r, "retrieving events before all events have been closed.") {
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t.Errorf("expected panic but: %s", r)
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}
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}()
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eh.CompletedEvents()
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}
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