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Copy pathflag_reflect_number_int_test.go
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flag_reflect_number_int_test.go
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package clif
import (
"context"
"errors"
"math"
"math/big"
"reflect"
"strconv"
"testing"
)
func TestNewValueFromInt_success(t *testing.T) {
t.Parallel()
type testCase struct {
input FlagValue
expected int64
target any
}
testCases := map[string]testCase{
// int
"int/0": {input: FlagValue{Set: true, Raw: "0"}, expected: int64(0), target: int(0)},
"int/-1": {input: FlagValue{Set: true, Raw: "-1"}, expected: int64(-1), target: int(0)},
"int/1": {input: FlagValue{Set: true, Raw: "1"}, expected: int64(1), target: int(0)},
"int/max-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MaxInt), 10)}, expected: math.MaxInt, target: int(0)},
"int/min-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MinInt), 10)}, expected: math.MinInt, target: int(0)},
// int8
"int8/0": {input: FlagValue{Set: true, Raw: "0"}, expected: int64(0), target: int8(0)},
"int8/-1": {input: FlagValue{Set: true, Raw: "-1"}, expected: int64(-1), target: int8(0)},
"int8/1": {input: FlagValue{Set: true, Raw: "1"}, expected: int64(1), target: int8(0)},
"int8/max-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MaxInt8), 10)}, expected: math.MaxInt8, target: int8(0)},
"int8/min-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MinInt8), 10)}, expected: math.MinInt8, target: int8(0)},
// int16
"int16/0": {input: FlagValue{Set: true, Raw: "0"}, expected: int64(0), target: int16(0)},
"int16/-1": {input: FlagValue{Set: true, Raw: "-1"}, expected: int64(-1), target: int16(0)},
"int16/1": {input: FlagValue{Set: true, Raw: "1"}, expected: int64(1), target: int16(0)},
"int16/max-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MaxInt16), 10)}, expected: math.MaxInt16, target: int16(0)},
"int16/min-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MinInt16), 10)}, expected: math.MinInt16, target: int16(0)},
// int32
"int32/0": {input: FlagValue{Set: true, Raw: "0"}, expected: int64(0), target: int32(0)},
"int32/-1": {input: FlagValue{Set: true, Raw: "-1"}, expected: int64(-1), target: int32(0)},
"int32/1": {input: FlagValue{Set: true, Raw: "1"}, expected: int64(1), target: int32(0)},
"int32/max-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MaxInt32), 10)}, expected: math.MaxInt32, target: int32(0)},
"int32/min-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MinInt32), 10)}, expected: math.MinInt32, target: int32(0)},
// int64
"int64/0": {input: FlagValue{Set: true, Raw: "0"}, expected: int64(0), target: int64(0)},
"int64/-1": {input: FlagValue{Set: true, Raw: "-1"}, expected: int64(-1), target: int64(0)},
"int64/1": {input: FlagValue{Set: true, Raw: "1"}, expected: int64(1), target: int64(0)},
"int64/max-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MaxInt64), 10)}, expected: math.MaxInt64, target: int64(0)},
"int64/min-int": {input: FlagValue{Set: true, Raw: strconv.FormatInt(int64(math.MinInt64), 10)}, expected: math.MinInt64, target: int64(0)},
}
for name, test := range testCases {
t.Run(name, func(t *testing.T) {
t.Parallel()
ctx := context.Background()
res, err := newValueFromInt(ctx, test.input, reflect.ValueOf(test.target))
if err != nil {
t.Fatalf("Unexpected error %s", err)
}
got := res.Int()
if got != test.expected {
t.Fatalf("Expected %v, got %v", test.expected, got)
}
})
}
}
func TestNewValueFromInt_error_syntax(t *testing.T) {
t.Parallel()
testCases := map[string]string{
"empty": "",
"invalidValue": "NaN",
"float": "12.34",
}
for name, input := range testCases {
t.Run(name, func(t *testing.T) {
t.Parallel()
ctx := context.Background()
var target int
_, err := newValueFromInt(ctx, FlagValue{Set: true, Raw: input}, reflect.ValueOf(target))
if err == nil {
t.Fatal("Expected error, got none")
}
numError := &strconv.NumError{}
if !errors.As(err, &numError) {
t.Fatalf("Expected strconv.NumError, got %T: %v", err, err)
}
if !errors.Is(numError.Err, strconv.ErrSyntax) {
t.Fatalf("Expected strconv.NumError to be reporting a strconv.ErrSyntax, got %v instead", numError.Err)
}
})
}
}
func TestNewValueFromInt_error_overflow(t *testing.T) {
t.Parallel()
type testCase struct {
target any
value *big.Int
}
testCases := map[string]testCase{
"int": {
value: big.NewInt(0).Add(big.NewInt(int64(math.MaxInt)), big.NewInt(1)),
target: int(0),
},
"int8": {
value: big.NewInt(0).Add(big.NewInt(int64(math.MaxInt8)), big.NewInt(1)),
target: int8(0),
},
"int16": {
value: big.NewInt(0).Add(big.NewInt(int64(math.MaxInt16)), big.NewInt(1)),
target: int16(0),
},
"int32": {
value: big.NewInt(0).Add(big.NewInt(int64(math.MaxInt32)), big.NewInt(1)),
target: int32(0),
},
"int64": {
value: big.NewInt(0).Add(big.NewInt(int64(math.MaxInt64)), big.NewInt(1)),
target: int64(0),
},
"int-underflow": {
value: big.NewInt(0).Sub(big.NewInt(int64(math.MinInt)), big.NewInt(1)),
target: int(0),
},
"int8-underflow": {
value: big.NewInt(0).Sub(big.NewInt(int64(math.MinInt8)), big.NewInt(1)),
target: int8(0),
},
"int16-underflow": {
value: big.NewInt(0).Sub(big.NewInt(int64(math.MinInt16)), big.NewInt(1)),
target: int16(0),
},
"int32-underflow": {
value: big.NewInt(0).Sub(big.NewInt(int64(math.MinInt32)), big.NewInt(1)),
target: int32(0),
},
"int64-underflow": {
value: big.NewInt(0).Sub(big.NewInt(int64(math.MinInt64)), big.NewInt(1)),
target: int64(0),
},
}
for name, test := range testCases {
t.Run(name, func(t *testing.T) {
t.Parallel()
ctx := context.Background()
_, err := newValueFromInt(ctx, FlagValue{Set: true, Raw: test.value.String()}, reflect.ValueOf(test.target))
if err == nil {
t.Fatal("Expected error, got none")
}
numError := &strconv.NumError{}
if !errors.As(err, &numError) {
t.Fatalf("Expected strconv.NumError, got %T: %v", err, err)
}
if !errors.Is(numError.Err, strconv.ErrRange) {
t.Fatalf("Expected strconv.NumError to be reporting a strconv.ErrRange, got %v instead", numError.Err)
}
})
}
}