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stack_test.go
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stack_test.go
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package stack_test
import (
"testing"
"github.com/shivamMg/ppds/stack"
)
type myStack struct {
elems []int
}
func (s *myStack) pop() (int, bool) {
l := len(s.elems)
if l == 0 {
return 0, false
}
ele := s.elems[l-1]
s.elems = s.elems[:l-1]
return ele, true
}
func (s *myStack) push(ele int) {
s.elems = append(s.elems, ele)
}
func (s *myStack) Pop() (interface{}, bool) {
return s.pop()
}
func (s *myStack) Push(ele interface{}) {
s.push(ele.(int))
}
func TestSprint(t *testing.T) {
s := myStack{}
s.push(10)
s.push(199)
s.push(1111)
s.push(1111)
s.push(12111)
s.push(-113333111)
s.push(1111)
s.push(19)
s.push(199)
s.push(199)
s.push(121499)
s.push(-19019)
want := `│ -19019 │12│
│ 121499 │11│
│ 199 │10│
│ 199 │ 9│
│ 19 │ 8│
│ 1111 │ 7│
│ -113333111 │ 6│
│ 12111 │ 5│
│ 1111 │ 4│
│ 1111 │ 3│
│ 199 │ 2│
│ 10 │ 1│
└────────────┴──┘
`
got := stack.Sprint(&s)
if got != want {
t.Errorf("Expected:\n%s\n\nGot:\n%s\n", want, got)
}
}
type myStack2 struct {
elems []string
}
func (s *myStack2) pop() (string, bool) {
l := len(s.elems)
if l == 0 {
return "", false
}
ele := s.elems[l-1]
s.elems = s.elems[:l-1]
return ele, true
}
func (s *myStack2) push(ele string) {
s.elems = append(s.elems, ele)
}
func (s *myStack2) Pop() (interface{}, bool) {
return s.pop()
}
func (s *myStack2) Push(ele interface{}) {
s.push(ele.(string))
}
func TestRunes(t *testing.T) {
s := myStack2{}
s.push("你好,世界")
s.push("Hello world")
s.push("Ciao mondo")
s.push("नमस्ते दुनिया")
want := `│ नमस्ते दुनिया │4│
│ Ciao mondo │3│
│ Hello world │2│
│ 你好,世界 │1│
└───────────────┴─┘
`
got := stack.Sprint(&s)
if got != want {
t.Errorf("Expected:\n%s\n\nGot:\n%s\n", want, got)
}
}