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270 lines (219 loc) 路 6.08 KB
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package parco
import (
"bytes"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestOptionalType_Int_None(t *testing.T) {
optType := Option[int](IntLE())
var buf bytes.Buffer
// Test Compile None (nil)
err := optType.Compile(nil, &buf)
require.NoError(t, err)
// Should only write the header (1 byte for bool = false)
assert.Equal(t, 1, buf.Len())
// Test Parse None
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
assert.Nil(t, parsed)
}
func TestOptionalType_Int_Some(t *testing.T) {
optType := Option[int](IntLE())
var buf bytes.Buffer
value := 42
// Test Compile Some
err := optType.Compile(&value, &buf)
require.NoError(t, err)
// Should write header (1 byte) + int value (4 or 8 bytes)
assert.Greater(t, buf.Len(), 1)
// Test Parse Some
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
require.NotNil(t, parsed)
assert.Equal(t, value, *parsed)
}
func TestOptionalType_String_None(t *testing.T) {
optType := Option[string](Varchar())
var buf bytes.Buffer
// Test Compile None
err := optType.Compile(nil, &buf)
require.NoError(t, err)
// Test Parse None
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
assert.Nil(t, parsed)
}
func TestOptionalType_String_Some(t *testing.T) {
optType := Option[string](Varchar())
var buf bytes.Buffer
value := "hello world"
// Test Compile Some
err := optType.Compile(&value, &buf)
require.NoError(t, err)
// Test Parse Some
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
require.NotNil(t, parsed)
assert.Equal(t, value, *parsed)
}
func TestOptionalType_String_EmptyString(t *testing.T) {
optType := Option[string](Varchar())
var buf bytes.Buffer
value := ""
// Test Compile Some (empty string is still "Some", not "None")
err := optType.Compile(&value, &buf)
require.NoError(t, err)
// Test Parse Some
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
require.NotNil(t, parsed)
assert.Equal(t, value, *parsed)
}
func TestOptionalType_UInt32_Values(t *testing.T) {
tests := []struct {
name string
value *uint32
}{
{"None", nil},
{"Zero", func() *uint32 { v := uint32(0); return &v }()},
{"Max", func() *uint32 { v := uint32(4294967295); return &v }()},
{"Random", func() *uint32 { v := uint32(12345); return &v }()},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
optType := Option[uint32](UInt32LE())
var buf bytes.Buffer
// Test Compile
err := optType.Compile(tt.value, &buf)
require.NoError(t, err)
// Test Parse
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
if tt.value == nil {
assert.Nil(t, parsed)
} else {
require.NotNil(t, parsed)
assert.Equal(t, *tt.value, *parsed)
}
})
}
}
func TestOptionalType_Bool_Values(t *testing.T) {
tests := []struct {
name string
value *bool
}{
{"None", nil},
{"True", func() *bool { v := true; return &v }()},
{"False", func() *bool { v := false; return &v }()},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
optType := Option[bool](Bool())
var buf bytes.Buffer
// Test Compile
err := optType.Compile(tt.value, &buf)
require.NoError(t, err)
// Test Parse
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
if tt.value == nil {
assert.Nil(t, parsed)
} else {
require.NotNil(t, parsed)
assert.Equal(t, *tt.value, *parsed)
}
})
}
}
func TestOptionalType_Float32_Values(t *testing.T) {
tests := []struct {
name string
value *float32
}{
{"None", nil},
{"Zero", func() *float32 { v := float32(0.0); return &v }()},
{"Positive", func() *float32 { v := float32(123.45); return &v }()},
{"Negative", func() *float32 { v := float32(-123.45); return &v }()},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
optType := Option[float32](Float32LE())
var buf bytes.Buffer
// Test Compile
err := optType.Compile(tt.value, &buf)
require.NoError(t, err)
// Test Parse
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
if tt.value == nil {
assert.Nil(t, parsed)
} else {
require.NotNil(t, parsed)
assert.Equal(t, *tt.value, *parsed)
}
})
}
}
func TestOptionalType_ParseError_InsufficientBytes(t *testing.T) {
optType := Option[int](IntLE())
// Provide header saying "Some" but no bytes for the int value
buf := bytes.NewBuffer([]byte{0x01}) // header = true, but no int data
_, err := optType.Parse(buf)
assert.Error(t, err)
}
func TestOptionalType_ParseError_EmptyBuffer(t *testing.T) {
optType := Option[int](IntLE())
buf := bytes.NewBuffer([]byte{})
_, err := optType.Parse(buf)
assert.Error(t, err)
}
func TestOptionalType_RoundTrip(t *testing.T) {
t.Run("int16 some", func(t *testing.T) {
value := int16(12345)
optType := Option[int16](Int16LE())
var buf bytes.Buffer
err := optType.Compile(&value, &buf)
require.NoError(t, err)
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
require.NotNil(t, parsed)
assert.Equal(t, value, *parsed)
})
t.Run("int16 none", func(t *testing.T) {
optType := Option[int16](Int16LE())
var buf bytes.Buffer
err := optType.Compile(nil, &buf)
require.NoError(t, err)
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
assert.Nil(t, parsed)
})
t.Run("uint64 some", func(t *testing.T) {
value := uint64(18446744073709551615)
optType := Option[uint64](UInt64LE())
var buf bytes.Buffer
err := optType.Compile(&value, &buf)
require.NoError(t, err)
parsed, err := optType.Parse(&buf)
require.NoError(t, err)
require.NotNil(t, parsed)
assert.Equal(t, value, *parsed)
})
}
func TestOptionalType_NestedStructure(t *testing.T) {
// Test optional of optional (edge case)
t.Run("optional string nested", func(t *testing.T) {
// While OptionalType[*T] is unusual, let's test basic nesting
innerOpt := Option[string](Varchar())
var buf bytes.Buffer
value := "nested"
err := innerOpt.Compile(&value, &buf)
require.NoError(t, err)
parsed, err := innerOpt.Parse(&buf)
require.NoError(t, err)
require.NotNil(t, parsed)
assert.Equal(t, value, *parsed)
})
}