mirror of
https://github.com/restic/restic.git
synced 2024-09-08 20:39:25 +02:00
419 lines
12 KiB
Go
419 lines
12 KiB
Go
// Copyright 2016 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 valuecollector
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import (
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"fmt"
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"testing"
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"cloud.google.com/go/internal/testutil"
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"golang.org/x/debug"
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cd "google.golang.org/api/clouddebugger/v2"
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)
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const (
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// Some arbitrary type IDs for the test, for use in debug.Var's TypeID field.
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// A TypeID of 0 means the type is unknown, so we start at 1.
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int16Type = iota + 1
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stringType
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structType
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pointerType
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arrayType
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int32Type
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debugStringType
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mapType
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channelType
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sliceType
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)
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func TestValueCollector(t *testing.T) {
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// Construct the collector.
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c := NewCollector(&Program{}, 26)
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// Add some variables of various types, whose values we want the collector to read.
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variablesToAdd := []debug.LocalVar{
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{Name: "a", Var: debug.Var{TypeID: int16Type, Address: 0x1}},
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{Name: "b", Var: debug.Var{TypeID: stringType, Address: 0x2}},
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{Name: "c", Var: debug.Var{TypeID: structType, Address: 0x3}},
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{Name: "d", Var: debug.Var{TypeID: pointerType, Address: 0x4}},
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{Name: "e", Var: debug.Var{TypeID: arrayType, Address: 0x5}},
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{Name: "f", Var: debug.Var{TypeID: debugStringType, Address: 0x6}},
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{Name: "g", Var: debug.Var{TypeID: mapType, Address: 0x7}},
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{Name: "h", Var: debug.Var{TypeID: channelType, Address: 0x8}},
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{Name: "i", Var: debug.Var{TypeID: sliceType, Address: 0x9}},
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}
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expectedResults := []*cd.Variable{
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&cd.Variable{Name: "a", VarTableIndex: 1},
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&cd.Variable{Name: "b", VarTableIndex: 2},
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&cd.Variable{Name: "c", VarTableIndex: 3},
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&cd.Variable{Name: "d", VarTableIndex: 4},
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&cd.Variable{Name: "e", VarTableIndex: 5},
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&cd.Variable{Name: "f", VarTableIndex: 6},
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&cd.Variable{Name: "g", VarTableIndex: 7},
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&cd.Variable{Name: "h", VarTableIndex: 8},
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&cd.Variable{Name: "i", VarTableIndex: 9},
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}
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for i, v := range variablesToAdd {
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added := c.AddVariable(v)
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if !testutil.Equal(added, expectedResults[i]) {
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t.Errorf("AddVariable: got %+v want %+v", *added, *expectedResults[i])
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}
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}
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// Read the values, compare the output to what we expect.
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v := c.ReadValues()
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expectedValues := []*cd.Variable{
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&cd.Variable{},
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&cd.Variable{Value: "1"},
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&cd.Variable{Value: `"hello"`},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "x", VarTableIndex: 1},
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&cd.Variable{Name: "y", VarTableIndex: 2},
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},
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{VarTableIndex: 1},
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},
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Value: "0x1",
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "[0]", VarTableIndex: 10},
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&cd.Variable{Name: "[1]", VarTableIndex: 11},
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&cd.Variable{Name: "[2]", VarTableIndex: 12},
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&cd.Variable{Name: "[3]", VarTableIndex: 13},
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},
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Value: "len = 4",
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},
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&cd.Variable{Value: `"world"`},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "⚫", VarTableIndex: 14},
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&cd.Variable{Name: "⚫", VarTableIndex: 15},
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&cd.Variable{Name: "⚫", VarTableIndex: 16},
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},
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Value: "len = 3",
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "[0]", VarTableIndex: 17},
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&cd.Variable{Name: "[1]", VarTableIndex: 18},
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},
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Value: "len = 2",
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "[0]", VarTableIndex: 19},
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&cd.Variable{Name: "[1]", VarTableIndex: 20},
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},
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Value: "len = 2",
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},
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&cd.Variable{Value: "100"},
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&cd.Variable{Value: "104"},
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&cd.Variable{Value: "108"},
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&cd.Variable{Value: "112"},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "key", VarTableIndex: 21},
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&cd.Variable{Name: "value", VarTableIndex: 22},
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},
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "key", VarTableIndex: 23},
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&cd.Variable{Name: "value", VarTableIndex: 24},
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},
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "key", VarTableIndex: 25},
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&cd.Variable{
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Name: "value",
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Status: &cd.StatusMessage{
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Description: &cd.FormatMessage{
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Format: "$0",
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Parameters: []string{"Not captured"},
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},
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IsError: true,
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RefersTo: "VARIABLE_NAME",
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},
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},
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},
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},
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&cd.Variable{Value: "246"},
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&cd.Variable{Value: "210"},
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&cd.Variable{Value: "300"},
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&cd.Variable{Value: "304"},
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&cd.Variable{Value: "400"},
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&cd.Variable{Value: "404"},
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&cd.Variable{Value: "1400"},
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&cd.Variable{Value: "1404"},
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&cd.Variable{Value: "2400"},
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}
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if !testutil.Equal(v, expectedValues) {
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t.Errorf("ReadValues: got %v want %v", v, expectedValues)
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// Do element-by-element comparisons, for more useful error messages.
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for i := range v {
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if i < len(expectedValues) && !testutil.Equal(v[i], expectedValues[i]) {
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t.Errorf("element %d: got %+v want %+v", i, *v[i], *expectedValues[i])
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}
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}
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}
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}
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// Program implements the similarly-named interface in x/debug.
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// ValueCollector should only call its Value and MapElement methods.
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type Program struct {
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debug.Program
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}
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func (p *Program) Value(v debug.Var) (debug.Value, error) {
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// We determine what to return using v.TypeID.
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switch v.TypeID {
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case int16Type:
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// We use the address as the value, so that we're testing whether the right
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// address was calculated.
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return int16(v.Address), nil
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case stringType:
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// A string.
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return "hello", nil
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case structType:
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// A struct with two elements.
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return debug.Struct{
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Fields: []debug.StructField{
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{
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Name: "x",
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Var: debug.Var{TypeID: int16Type, Address: 0x1},
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},
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{
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Name: "y",
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Var: debug.Var{TypeID: stringType, Address: 0x2},
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},
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},
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}, nil
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case pointerType:
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// A pointer to the first variable above.
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return debug.Pointer{TypeID: int16Type, Address: 0x1}, nil
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case arrayType:
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// An array of 4 32-bit-wide elements.
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return debug.Array{
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ElementTypeID: int32Type,
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Address: 0x64,
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Length: 4,
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StrideBits: 32,
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}, nil
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case debugStringType:
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return debug.String{
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Length: 5,
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String: "world",
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}, nil
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case mapType:
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return debug.Map{
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TypeID: 99,
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Address: 0x100,
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Length: 3,
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}, nil
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case channelType:
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return debug.Channel{
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ElementTypeID: int32Type,
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Address: 200,
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Buffer: 210,
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Length: 2,
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Capacity: 10,
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Stride: 4,
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BufferStart: 9,
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}, nil
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case sliceType:
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// A slice of 2 32-bit-wide elements.
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return debug.Slice{
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Array: debug.Array{
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ElementTypeID: int32Type,
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Address: 300,
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Length: 2,
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StrideBits: 32,
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},
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Capacity: 50,
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}, nil
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case int32Type:
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// We use the address as the value, so that we're testing whether the right
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// address was calculated.
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return int32(v.Address), nil
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}
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return nil, fmt.Errorf("unexpected Value request")
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}
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func (p *Program) MapElement(m debug.Map, index uint64) (debug.Var, debug.Var, error) {
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return debug.Var{TypeID: int16Type, Address: 1000*index + 400},
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debug.Var{TypeID: int32Type, Address: 1000*index + 404},
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nil
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}
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func TestLogString(t *testing.T) {
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bp := cd.Breakpoint{
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Action: "LOG",
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LogMessageFormat: "$0 hello, $$7world! $1 $2 $3 $4 $5$6 $7 $8",
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EvaluatedExpressions: []*cd.Variable{
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&cd.Variable{Name: "a", VarTableIndex: 1},
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&cd.Variable{Name: "b", VarTableIndex: 2},
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&cd.Variable{Name: "c", VarTableIndex: 3},
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&cd.Variable{Name: "d", VarTableIndex: 4},
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&cd.Variable{Name: "e", VarTableIndex: 5},
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&cd.Variable{Name: "f", VarTableIndex: 6},
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&cd.Variable{Name: "g", VarTableIndex: 7},
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&cd.Variable{Name: "h", VarTableIndex: 8},
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&cd.Variable{Name: "i", VarTableIndex: 9},
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},
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}
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varTable := []*cd.Variable{
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&cd.Variable{},
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&cd.Variable{Value: "1"},
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&cd.Variable{Value: `"hello"`},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "x", Value: "1"},
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&cd.Variable{Name: "y", Value: `"hello"`},
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&cd.Variable{Name: "z", VarTableIndex: 3},
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},
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{VarTableIndex: 1},
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},
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Value: "0x1",
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "[0]", VarTableIndex: 10},
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&cd.Variable{Name: "[1]", VarTableIndex: 11},
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&cd.Variable{Name: "[2]", VarTableIndex: 12},
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&cd.Variable{Name: "[3]", VarTableIndex: 13},
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},
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Value: "len = 4",
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},
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&cd.Variable{Value: `"world"`},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "⚫", VarTableIndex: 14},
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&cd.Variable{Name: "⚫", VarTableIndex: 15},
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&cd.Variable{Name: "⚫", VarTableIndex: 16},
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},
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Value: "len = 3",
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "[0]", VarTableIndex: 17},
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&cd.Variable{Name: "[1]", VarTableIndex: 18},
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},
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Value: "len = 2",
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "[0]", VarTableIndex: 19},
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&cd.Variable{Name: "[1]", VarTableIndex: 20},
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},
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Value: "len = 2",
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},
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&cd.Variable{Value: "100"},
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&cd.Variable{Value: "104"},
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&cd.Variable{Value: "108"},
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&cd.Variable{Value: "112"},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "key", VarTableIndex: 21},
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&cd.Variable{Name: "value", VarTableIndex: 22},
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},
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "key", VarTableIndex: 23},
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&cd.Variable{Name: "value", VarTableIndex: 24},
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},
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},
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&cd.Variable{
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Members: []*cd.Variable{
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&cd.Variable{Name: "key", VarTableIndex: 25},
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&cd.Variable{
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Name: "value",
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Status: &cd.StatusMessage{
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Description: &cd.FormatMessage{
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Format: "$0",
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Parameters: []string{"Not captured"},
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},
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IsError: true,
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RefersTo: "VARIABLE_NAME",
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},
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},
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},
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},
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&cd.Variable{Value: "246"},
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&cd.Variable{Value: "210"},
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&cd.Variable{Value: "300"},
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&cd.Variable{Value: "304"},
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&cd.Variable{Value: "400"},
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&cd.Variable{Value: "404"},
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&cd.Variable{Value: "1400"},
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&cd.Variable{Value: "1404"},
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&cd.Variable{Value: "2400"},
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}
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s := LogString(bp.LogMessageFormat, bp.EvaluatedExpressions, varTable)
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expected := `LOGPOINT: 1 hello, $7world! "hello" {x:1, y:"hello", z:...} ` +
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`0x1 {100, 104, 108, 112} "world"{400:404, 1400:1404, 2400:(Not captured)} ` +
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`{246, 210} {300, 304}`
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if s != expected {
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t.Errorf("LogString: got %q want %q", s, expected)
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}
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}
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func TestParseToken(t *testing.T) {
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for _, c := range []struct {
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s string
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max int
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num int
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n int
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ok bool
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}{
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{"", 0, 0, 0, false},
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{".", 0, 0, 0, false},
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{"0", 0, 0, 1, true},
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{"0", 1, 0, 1, true},
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{"00", 0, 0, 2, true},
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{"1.", 1, 1, 1, true},
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{"1.", 0, 0, 0, false},
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{"10", 10, 10, 2, true},
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{"10..", 10, 10, 2, true},
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{"10", 11, 10, 2, true},
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{"10..", 11, 10, 2, true},
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{"10", 9, 0, 0, false},
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{"10..", 9, 0, 0, false},
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{" 10", 10, 0, 0, false},
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{"010", 10, 10, 3, true},
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{"123456789", 123456789, 123456789, 9, true},
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{"123456789", 123456788, 0, 0, false},
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{"123456789123456789123456789", 999999999, 0, 0, false},
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} {
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num, n, ok := parseToken(c.s, c.max)
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if ok != c.ok {
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t.Errorf("parseToken(%q, %d): got ok=%t want ok=%t", c.s, c.max, ok, c.ok)
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continue
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}
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if !ok {
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continue
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}
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if num != c.num || n != c.n {
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t.Errorf("parseToken(%q, %d): got %d,%d,%t want %d,%d,%t", c.s, c.max, num, n, ok, c.num, c.n, c.ok)
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}
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}
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}
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