feat: typechecks: tests for 'uint' + add string repr for 'int'
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@ -92,6 +92,15 @@ func TestInt_Values(t *testing.T) {
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// we cannot just add 1 because of how precision works
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{float64(math.MaxInt64 + 1024 + 2), false},
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// json number
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{fmt.Sprintf("%f", float64(math.MinInt64-1024-1)), false},
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{fmt.Sprintf("%d", math.MinInt64), true},
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{"-1", true},
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{"0", true},
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{"1", true},
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{fmt.Sprintf("%d", math.MaxInt64), true},
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{fmt.Sprintf("%f", float64(math.MaxInt64+1024+2)), false},
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{"string", false},
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{[]byte("bytes"), false},
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{-0.1, false},
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@ -1,6 +1,9 @@
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package builtin
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import (
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"encoding/json"
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"math"
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"git.xdrm.io/go/aicra/typecheck"
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)
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@ -19,12 +22,40 @@ func (Uint) Checker(typeName string) typecheck.CheckerFunc {
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return nil
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}
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return func(value interface{}) bool {
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cast, isFloat := readFloat(value)
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_, isInt := readUint(value)
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return isInt
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}
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}
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// readUint tries to read a serialized uint and returns whether it succeeded.
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func readUint(value interface{}) (uint, bool) {
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switch cast := value.(type) {
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case int:
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return uint(cast), cast >= 0
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case uint:
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return cast, true
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case float64:
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uintVal := uint(cast)
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overflows := cast < 0 || cast > math.MaxUint64
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return uintVal, cast == float64(uintVal) && !overflows
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// serialized string -> try to convert to float
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case string:
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num := json.Number(cast)
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floatVal, err := num.Float64()
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if err != nil {
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return 0, false
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}
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overflows := floatVal < 0 || floatVal > math.MaxUint64
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return uint(floatVal), !overflows
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// unknown type
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default:
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return 0, false
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if !isFloat {
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return false
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}
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return cast >= 0 && cast == float64(int(cast))
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}
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}
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@ -0,0 +1,122 @@
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package builtin_test
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import (
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"fmt"
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"math"
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"testing"
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"git.xdrm.io/go/aicra/typecheck/builtin"
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)
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func TestUint_New(t *testing.T) {
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t.Parallel()
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inst := interface{}(builtin.NewUint())
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switch cast := inst.(type) {
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case *builtin.Uint:
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return
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default:
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t.Errorf("expect %T ; got %T", &builtin.Uint{}, cast)
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}
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}
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func TestUint_AvailableTypes(t *testing.T) {
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t.Parallel()
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inst := builtin.NewUint()
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tests := []struct {
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Type string
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Handled bool
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}{
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{"uint", true},
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{"Uint", false},
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{"UINT", false},
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{" uint", false},
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{"uint ", false},
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{" uint ", false},
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}
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for _, test := range tests {
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t.Run(test.Type, func(t *testing.T) {
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checker := inst.Checker(test.Type)
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if checker == nil {
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if test.Handled {
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t.Errorf("expect %q to be handled", test.Type)
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t.Fail()
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}
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return
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}
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if !test.Handled {
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t.Errorf("expect %q NOT to be handled", test.Type)
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t.Fail()
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}
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})
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}
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}
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func TestUint_Values(t *testing.T) {
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t.Parallel()
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const typeName = "uint"
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checker := builtin.NewUint().Checker(typeName)
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if checker == nil {
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t.Errorf("expect %q to be handled", typeName)
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t.Fail()
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}
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tests := []struct {
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Value interface{}
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Valid bool
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}{
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{uint(0), true},
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{uint(math.MaxInt64), true},
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{uint(math.MaxUint64), true},
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{-1, false},
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{-math.MaxInt64, false},
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{float64(math.MinInt64), false},
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{float64(0), true},
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{float64(math.MaxInt64), true},
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// we cannot just compare because of how precision works
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{float64(math.MaxUint64 - 1024), true},
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{float64(math.MaxUint64 + 1), false},
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// json number
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{fmt.Sprintf("%d", math.MinInt64), false},
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{"-1", false},
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{"0", true},
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{"1", true},
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{fmt.Sprintf("%d", math.MaxInt64), true},
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{fmt.Sprintf("%d", uint(math.MaxUint64)), true},
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// strane offset because of how precision works
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{fmt.Sprintf("%f", float64(math.MaxUint64+1024*3)), false},
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{"string", false},
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{[]byte("bytes"), false},
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{-0.1, false},
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{0.1, false},
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{nil, false},
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}
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for i, test := range tests {
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t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
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if checker(test.Value) {
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if !test.Valid {
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t.Errorf("expect value to be invalid")
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t.Fail()
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}
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return
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}
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if test.Valid {
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t.Errorf("expect value to be valid")
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t.Fail()
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}
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})
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}
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}
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