63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
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package main
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import (
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"reflect"
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"testing"
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"unsafe"
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"github.com/stretchr/testify/assert"
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)
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// go test -v homework_test.go
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func Trace(stacks [][]uintptr) []uintptr {
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// need to implement
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return nil
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}
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func TestTrace(t *testing.T) {
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var heapObjects = []int{
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0x00, 0x00, 0x00, 0x00, 0x00,
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}
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var heapPointer1 *int = &heapObjects[1]
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var heapPointer2 *int = &heapObjects[2]
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var heapPointer3 *int = nil
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var heapPointer4 **int = &heapPointer3
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var stacks = [][]uintptr{
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{
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uintptr(unsafe.Pointer(&heapPointer1)), 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, uintptr(unsafe.Pointer(&heapObjects[0])),
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0x00, 0x00, 0x00, 0x00,
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},
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{
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uintptr(unsafe.Pointer(&heapPointer2)), 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, uintptr(unsafe.Pointer(&heapObjects[1])),
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0x00, 0x00, 0x00, uintptr(unsafe.Pointer(&heapObjects[2])),
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uintptr(unsafe.Pointer(&heapPointer4)), 0x00, 0x00, 0x00,
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},
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{
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, uintptr(unsafe.Pointer(&heapObjects[3])),
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},
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}
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pointers := Trace(stacks)
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expectedPointers := []uintptr{
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uintptr(unsafe.Pointer(&heapPointer1)),
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uintptr(unsafe.Pointer(&heapObjects[0])),
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uintptr(unsafe.Pointer(&heapPointer2)),
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uintptr(unsafe.Pointer(&heapObjects[1])),
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uintptr(unsafe.Pointer(&heapObjects[2])),
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uintptr(unsafe.Pointer(&heapPointer4)),
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uintptr(unsafe.Pointer(&heapPointer3)),
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uintptr(unsafe.Pointer(&heapObjects[3])),
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}
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assert.True(t, reflect.DeepEqual(expectedPointers, pointers))
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}
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