Merge f6ea936710
into 1ffadf5510
This commit is contained in:
коміт
ac95c443f7
6
cast.go
6
cast.go
@ -68,6 +68,12 @@ func ToInt(i interface{}) int {
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return v
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}
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// ToIntBase10 casts an interface to an int type.
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func ToIntBase10(i interface{}) int {
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v, _ := ToIntEBase10(i)
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return v
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}
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// ToUint casts an interface to a uint type.
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func ToUint(i interface{}) uint {
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v, _ := ToUintE(i)
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47
cast_test.go
47
cast_test.go
@ -279,6 +279,52 @@ func TestToUint8E(t *testing.T) {
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}
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}
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func TestToIntEBase10(t *testing.T) {
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tests := []struct {
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input interface{}
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expect int
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iserr bool
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}{
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{"091", 91, false},
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{int(8), 8, false},
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{int8(8), 8, false},
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{int16(8), 8, false},
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{int32(8), 8, false},
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{int64(8), 8, false},
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{uint(8), 8, false},
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{uint8(8), 8, false},
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{uint16(8), 8, false},
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{uint32(8), 8, false},
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{uint64(8), 8, false},
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{float32(8.31), 8, false},
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{float64(8.31), 8, false},
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{true, 1, false},
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{false, 0, false},
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{"8", 8, false},
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{nil, 0, false},
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// errors
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{"test", 0, true},
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{testing.T{}, 0, true},
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}
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for i, test := range tests {
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errmsg := fmt.Sprintf("i = %d", i) // assert helper message
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v, err := ToIntEBase10(test.input)
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if test.iserr {
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assert.Error(t, err, errmsg)
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continue
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}
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assert.NoError(t, err, errmsg)
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assert.Equal(t, test.expect, v, errmsg)
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// Non-E test
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v = ToIntBase10(test.input)
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assert.Equal(t, test.expect, v, errmsg)
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}
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}
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func TestToIntE(t *testing.T) {
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tests := []struct {
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input interface{}
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@ -302,6 +348,7 @@ func TestToIntE(t *testing.T) {
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{"8", 8, false},
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{nil, 0, false},
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// errors
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{"091", 0, true},
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{"test", 0, true},
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{testing.T{}, 0, true},
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}
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47
caste.go
47
caste.go
@ -369,6 +369,53 @@ func ToInt8E(i interface{}) (int8, error) {
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}
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}
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// ToIntE casts an interface to an int type.
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func ToIntEBase10(i interface{}) (int, error) {
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i = indirect(i)
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switch s := i.(type) {
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case int:
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return s, nil
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case int64:
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return int(s), nil
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case int32:
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return int(s), nil
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case int16:
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return int(s), nil
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case int8:
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return int(s), nil
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case uint:
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return int(s), nil
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case uint64:
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return int(s), nil
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case uint32:
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return int(s), nil
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case uint16:
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return int(s), nil
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case uint8:
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return int(s), nil
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case float64:
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return int(s), nil
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case float32:
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return int(s), nil
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case string:
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v, err := strconv.ParseInt(s, 10, 0)
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if err == nil {
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return int(v), nil
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}
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return 0, fmt.Errorf("unable to cast %#v of type %T to int", i, i)
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case bool:
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if s {
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return 1, nil
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}
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return 0, nil
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case nil:
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return 0, nil
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default:
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return 0, fmt.Errorf("unable to cast %#v of type %T to int", i, i)
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}
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}
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// ToIntE casts an interface to an int type.
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func ToIntE(i interface{}) (int, error) {
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i = indirect(i)
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2
go.mod
2
go.mod
@ -5,3 +5,5 @@ require (
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github.com/pmezard/go-difflib v1.0.0 // indirect
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github.com/stretchr/testify v1.2.2
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)
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go 1.13
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