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// Copyright (c) 2019, Maxime Soulé
// All rights reserved.
//
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree.
package tdutil
import (
"math"
"reflect"
"testing"
"github.com/maxatome/go-testdeep/internal/visited"
)
func TestSortCmp(t *testing.T) {
checkCmp := func(a, b any, expected int) {
t.Helper()
got := cmp(visited.NewVisited(), reflect.ValueOf(a), reflect.ValueOf(b))
if got != expected {
t.Errorf("cmp() failed: got=%d expected=%d\n", got, expected)
}
}
// IsValid
checkCmp(nil, 12, -1)
checkCmp(nil, nil, 0)
checkCmp(12, nil, 1)
// type mismatch: int is before string
checkCmp(42, "str", -1)
checkCmp("str", 42, 1)
// bool
checkCmp(true, true, 0)
checkCmp(true, false, 1)
checkCmp(false, true, -1)
checkCmp(false, false, 0)
// int
checkCmp(12, 42, -1)
checkCmp(42, 12, 1)
checkCmp(12, 12, 0)
checkCmp(int8(12), int8(42), -1)
checkCmp(int8(42), int8(12), 1)
checkCmp(int8(12), int8(12), 0)
checkCmp(int16(12), int16(42), -1)
checkCmp(int16(42), int16(12), 1)
checkCmp(int16(12), int16(12), 0)
checkCmp(int32(12), int32(42), -1)
checkCmp(int32(42), int32(12), 1)
checkCmp(int32(12), int32(12), 0)
checkCmp(int64(12), int64(42), -1)
checkCmp(int64(42), int64(12), 1)
checkCmp(int64(12), int64(12), 0)
// uint
checkCmp(uint(12), uint(42), -1)
checkCmp(uint(42), uint(12), 1)
checkCmp(uint(12), uint(12), 0)
checkCmp(uint8(12), uint8(42), -1)
checkCmp(uint8(42), uint8(12), 1)
checkCmp(uint8(12), uint8(12), 0)
checkCmp(uint16(12), uint16(42), -1)
checkCmp(uint16(42), uint16(12), 1)
checkCmp(uint16(12), uint16(12), 0)
checkCmp(uint32(12), uint32(42), -1)
checkCmp(uint32(42), uint32(12), 1)
checkCmp(uint32(12), uint32(12), 0)
checkCmp(uint64(12), uint64(42), -1)
checkCmp(uint64(42), uint64(12), 1)
checkCmp(uint64(12), uint64(12), 0)
checkCmp(uintptr(12), uintptr(42), -1)
checkCmp(uintptr(42), uintptr(12), 1)
checkCmp(uintptr(12), uintptr(12), 0)
// float
checkCmp(float32(12), float32(42), -1)
checkCmp(float32(42), float32(12), 1)
checkCmp(float32(12), float32(12), 0)
checkCmp(float64(12), float64(42), -1)
checkCmp(float64(42), float64(12), 1)
checkCmp(float64(12), float64(12), 0)
checkCmp(float64(12), float64(12), 0)
checkCmp(math.NaN(), float64(12), -1)
checkCmp(math.NaN(), math.NaN(), -1)
checkCmp(float64(12), math.NaN(), 1)
// complex
checkCmp(complex(12, 0), complex(42, 0), -1)
checkCmp(complex(42, 0), complex(12, 0), 1)
checkCmp(complex(0, 12), complex(0, 42), -1)
checkCmp(complex(0, 42), complex(0, 12), 1)
checkCmp(complex(12, 0), complex(12, 0), 0)
checkCmp(complex(float32(12), 0), complex(float32(42), 0), -1)
checkCmp(complex(float32(42), 0), complex(float32(12), 0), 1)
checkCmp(complex(float32(0), 12), complex(float32(0), 42), -1)
checkCmp(complex(float32(0), 42), complex(float32(0), 12), 1)
checkCmp(complex(float32(12), 0), complex(float32(12), 0), 0)
// string
checkCmp("aaa", "bbb", -1)
checkCmp("bbb", "aaa", 1)
checkCmp("aaa", "aaa", 0)
// array
checkCmp([3]byte{1, 2, 3}, [3]byte{3, 1, 2}, -1)
checkCmp([3]byte{3, 1, 2}, [3]byte{1, 2, 3}, 1)
checkCmp([3]byte{1, 2, 3}, [3]byte{1, 2, 3}, 0)
// slice
checkCmp([]byte{1, 2, 3}, []byte{3, 1, 2}, -1)
checkCmp([]byte{3, 1, 2}, []byte{1, 2, 3}, 1)
checkCmp([]byte{1, 2, 3}, []byte{1, 2, 3}, 0)
checkCmp([]byte{1, 2, 3}, []byte{1, 2, 3, 4}, -1)
checkCmp([]byte{1, 2, 3, 4}, []byte{1, 2, 3}, 1)
// interface
checkCmp([]any{1}, []any{3}, -1)
checkCmp([]any{3}, []any{1}, 1)
checkCmp([]any{1}, []any{1}, 0)
checkCmp([]any{nil}, []any{nil}, 0)
checkCmp([]any{nil}, []any{1}, -1)
checkCmp([]any{1}, []any{nil}, 1)
// struct
type myStruct struct {
n int
s string
p *myStruct
}
checkCmp(myStruct{n: 12, s: "a"}, myStruct{n: 12, s: "b"}, -1)
checkCmp(myStruct{n: 12, s: "b"}, myStruct{n: 12, s: "a"}, 1)
checkCmp(myStruct{n: 12, s: "a"}, myStruct{n: 12, s: "a"}, 0)
// ptr
a, b := 12, 42
checkCmp(&a, &a, 0)
checkCmp((*int)(nil), (*int)(nil), 0)
checkCmp(&a, &b, -1)
checkCmp((*int)(nil), &b, -1)
checkCmp(&b, &a, 1)
checkCmp(&b, (*int)(nil), 1)
// map
ma, mb := map[int]bool{12: true}, map[int]bool{12: true, 13: false}
checkCmp(ma, mb, -1)
checkCmp(mb, ma, 1)
checkCmp(ma, ma, 0)
checkCmp((map[int]bool)(nil), (map[int]bool)(nil), 0)
checkCmp((map[int]bool)(nil), ma, -1)
checkCmp(ma, (map[int]bool)(nil), 1)
// cyclic references protection
pa := &myStruct{n: 42, p: &myStruct{n: 18}}
pa.p.p = pa.p
pb := &myStruct{n: 42, p: &myStruct{n: 18}}
pb.p.p = pb.p
checkCmp(pa, pb, 0)
}
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