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cast_test.go
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cast_test.go
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package cast_test
import (
"github.com/golobby/cast"
"reflect"
"testing"
"github.com/stretchr/testify/assert"
)
func TestFromString(t *testing.T) {
message := "cast: cannot cast `%v` to type `%v`"
// string
val, err := cast.FromString("string", cast.String)
assert.NoError(t, err)
assert.Equal(t, "string", val)
// int
val, err = cast.FromString("1", cast.Int)
assert.NoError(t, err)
assert.Equal(t, 1, val)
_, err = cast.FromString("str", cast.Int)
assert.Errorf(t, err, message, "str", cast.Int)
val, err = cast.FromString("1", cast.Int8)
assert.NoError(t, err)
assert.Equal(t, int8(1), val)
_, err = cast.FromString("str", cast.Int8)
assert.Errorf(t, err, message, "str", cast.Int8)
val, err = cast.FromString("1", cast.Int16)
assert.NoError(t, err)
assert.Equal(t, int16(1), val)
_, err = cast.FromString("str", cast.Int16)
assert.Errorf(t, err, message, "str", cast.Int16)
val, err = cast.FromString("1", cast.Int32)
assert.NoError(t, err)
assert.Equal(t, int32(1), val)
_, err = cast.FromString("str", cast.Int32)
assert.Errorf(t, err, message, "str", cast.Int32)
val, err = cast.FromString("1", cast.Int64)
assert.NoError(t, err)
assert.Equal(t, int64(1), val)
_, err = cast.FromString("str", cast.Int64)
assert.Errorf(t, err, message, "str", cast.Int64)
// uint
val, err = cast.FromString("1", cast.Uint)
assert.NoError(t, err)
assert.Equal(t, uint(1), val)
_, err = cast.FromString("-1", cast.Uint)
assert.Errorf(t, err, message, "-1", cast.Uint)
val, err = cast.FromString("1", cast.Uint8)
assert.NoError(t, err)
assert.Equal(t, uint8(1), val)
_, err = cast.FromString("-1", cast.Uint8)
assert.Errorf(t, err, message, "-1", cast.Uint8)
val, err = cast.FromString("1", cast.Uint16)
assert.NoError(t, err)
assert.Equal(t, uint16(1), val)
_, err = cast.FromString("-1", cast.Uint16)
assert.Errorf(t, err, message, "-1", cast.Uint16)
val, err = cast.FromString("1", cast.Uint32)
assert.NoError(t, err)
assert.Equal(t, uint32(1), val)
_, err = cast.FromString("-1", cast.Uint32)
assert.Errorf(t, err, message, "-1", cast.Uint32)
val, err = cast.FromString("1", cast.Uint64)
assert.NoError(t, err)
assert.Equal(t, uint64(1), val)
_, err = cast.FromString("-1", cast.Uint64)
assert.Errorf(t, err, message, "-1", cast.Uint64)
// float
val, err = cast.FromString("3.14", cast.Float32)
assert.NoError(t, err)
assert.Equal(t, float32(3.14), val)
_, err = cast.FromString("str", cast.Float32)
assert.Errorf(t, err, message, "str", cast.Float32)
val, err = cast.FromString("3.14", cast.Float64)
assert.NoError(t, err)
assert.Equal(t, 3.14, val)
_, err = cast.FromString("str", cast.Float64)
assert.Errorf(t, err, message, "str", cast.Float64)
// bool
val, err = cast.FromString("true", cast.Bool)
assert.NoError(t, err)
assert.Equal(t, true, val)
_, err = cast.FromString("1", cast.Bool)
assert.NoError(t, err)
assert.Equal(t, true, val)
val, err = cast.FromString("false", cast.Bool)
assert.NoError(t, err)
assert.Equal(t, false, val)
_, err = cast.FromString("0", cast.Bool)
assert.NoError(t, err)
assert.Equal(t, false, val)
_, err = cast.FromString("invalid", cast.Bool)
assert.Errorf(t, err, message, "invalid", cast.Bool)
// else
_, err = cast.FromString("0", "invalid")
assert.Error(t, err, "cast: type %v is not supported", "invalid")
_, err = cast.FromString("0,1", "[]invalid")
assert.Error(t, err, "cast: type %v is not supported", "[]invalid")
}
func TestFromType(t *testing.T) {
val, err := cast.FromType("4,-5,6", reflect.TypeOf([]int{}))
assert.NoError(t, err)
assert.Equal(t, []int{4, -5, 6}, val)
val, err = cast.FromType("4,-5,6", reflect.TypeOf([]int8{}))
assert.NoError(t, err)
assert.Equal(t, []int8{4, -5, 6}, val)
val, err = cast.FromType("4,-5, 6", reflect.TypeOf([]int16{}))
assert.NoError(t, err)
assert.Equal(t, []int16{4, -5, 6}, val)
val, err = cast.FromType("4,-5,6", reflect.TypeOf([]int32{}))
assert.NoError(t, err)
assert.Equal(t, []int32{4, -5, 6}, val)
val, err = cast.FromType("4,-5,6", reflect.TypeOf([]int64{}))
assert.NoError(t, err)
assert.Equal(t, []int64{4, -5, 6}, val)
val, err = cast.FromType("4,5,6", reflect.TypeOf([]uint{}))
assert.NoError(t, err)
assert.Equal(t, []uint{4, 5, 6}, val)
val, err = cast.FromType("4,5,6", reflect.TypeOf([]uint8{}))
assert.NoError(t, err)
assert.Equal(t, []uint8{4, 5, 6}, val)
val, err = cast.FromType("4,5,6", reflect.TypeOf([]uint16{}))
assert.NoError(t, err)
assert.Equal(t, []uint16{4, 5, 6}, val)
val, err = cast.FromType("4,5,6", reflect.TypeOf([]uint32{}))
assert.NoError(t, err)
assert.Equal(t, []uint32{4, 5, 6}, val)
val, err = cast.FromType("4,5,6", reflect.TypeOf([]uint64{}))
assert.NoError(t, err)
assert.Equal(t, []uint64{4, 5, 6}, val)
val, err = cast.FromType("3.14,9.8", reflect.TypeOf([]float32{}))
assert.NoError(t, err)
assert.Equal(t, []float32{3.14, 9.8}, val)
val, err = cast.FromType("3.14,9.8", reflect.TypeOf([]float64{}))
assert.NoError(t, err)
assert.Equal(t, []float64{3.14, 9.8}, val)
val, err = cast.FromType("true,false,0,1", reflect.TypeOf([]bool{}))
assert.NoError(t, err)
assert.Equal(t, []bool{true, false, false, true}, val)
val, err = cast.FromType("a, b, c", reflect.TypeOf([]string{}))
assert.NoError(t, err)
assert.Equal(t, []string{"a", "b", "c"}, val)
val, err = cast.FromType("simple", reflect.TypeOf("string"))
assert.NoError(t, err)
assert.Equal(t, "simple", val)
val, err = cast.FromType("a,b,c", reflect.TypeOf([]int{}))
assert.Error(t, err)
}