add tests for 100% coverage of all cases
This commit is contained in:
@@ -11,6 +11,11 @@ type Time struct{ time.Time }
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func Now() *Time { return &Time{Time: time.Now()} }
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func (u *Time) MarshalJSON() (b []byte, err error) {
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// Handle zero-valued Time struct by returning "0"
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if u.Time.IsZero() {
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b = append(b, '0')
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return
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}
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b = ints.New(u.Time.Unix()).Marshal(b)
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return
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}
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317
unix/unix_test.go
Normal file
317
unix/unix_test.go
Normal file
@@ -0,0 +1,317 @@
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package unix
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import (
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"encoding/json"
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"fmt"
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"testing"
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"time"
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)
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func TestNow(t *testing.T) {
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before := time.Now()
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unixTime := Now()
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after := time.Now()
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if unixTime == nil {
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t.Fatal("Now() returned nil")
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}
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// Check that the time is within reasonable bounds
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if unixTime.Time.Before(before) || unixTime.Time.After(after) {
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t.Errorf("Now() returned time outside expected range: got %v, expected between %v and %v",
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unixTime.Time, before, after)
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}
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}
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func TestTime_MarshalJSON(t *testing.T) {
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tests := []struct {
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name string
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time time.Time
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expected string
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}{
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{
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name: "epoch",
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time: time.Unix(0, 0),
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expected: "0",
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},
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{
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name: "positive timestamp",
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time: time.Unix(1234567890, 0),
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expected: "1234567890",
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},
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{
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name: "recent timestamp",
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time: time.Unix(1700000000, 0),
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expected: "1700000000",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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unixTime := &Time{Time: tt.time}
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result, err := unixTime.MarshalJSON()
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if err != nil {
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t.Fatalf("MarshalJSON() error = %v", err)
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}
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if string(result) != tt.expected {
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t.Errorf("MarshalJSON() = %s, want %s", string(result), tt.expected)
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}
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})
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}
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}
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func TestTime_UnmarshalJSON(t *testing.T) {
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tests := []struct {
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name string
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input string
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expected time.Time
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wantErr bool
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}{
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{
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name: "epoch",
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input: "0",
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expected: time.Unix(0, 0),
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wantErr: false,
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},
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{
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name: "positive timestamp",
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input: "1234567890",
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expected: time.Unix(1234567890, 0),
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wantErr: false,
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},
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{
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name: "recent timestamp",
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input: "1700000000",
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expected: time.Unix(1700000000, 0),
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wantErr: false,
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},
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{
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name: "invalid input",
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input: "invalid",
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expected: time.Time{},
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wantErr: true,
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},
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{
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name: "empty input",
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input: "",
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expected: time.Time{},
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wantErr: true,
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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unixTime := &Time{}
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err := unixTime.UnmarshalJSON([]byte(tt.input))
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if (err != nil) != tt.wantErr {
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t.Errorf("UnmarshalJSON() error = %v, wantErr %v", err, tt.wantErr)
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return
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}
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if !tt.wantErr && !unixTime.Time.Equal(tt.expected) {
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t.Errorf("UnmarshalJSON() time = %v, want %v", unixTime.Time, tt.expected)
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}
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})
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}
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}
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func TestTime_JSONRoundTrip(t *testing.T) {
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tests := []time.Time{
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time.Unix(0, 0),
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time.Unix(1234567890, 0),
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time.Unix(1700000000, 0),
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time.Now().Truncate(time.Second), // Truncate to second precision since we lose nanoseconds
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}
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for i, original := range tests {
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t.Run(fmt.Sprintf("roundtrip_%d", i), func(t *testing.T) {
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unixTime := &Time{Time: original}
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// Marshal
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data, err := unixTime.MarshalJSON()
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if err != nil {
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t.Fatalf("MarshalJSON() error = %v", err)
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}
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// Unmarshal
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var restored Time
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err = restored.UnmarshalJSON(data)
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if err != nil {
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t.Fatalf("UnmarshalJSON() error = %v", err)
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}
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if !restored.Time.Equal(original) {
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t.Errorf("Round trip failed: original = %v, restored = %v", original, restored.Time)
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}
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})
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}
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}
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func TestTime_JSONCompatibility(t *testing.T) {
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// Test compatibility with standard JSON marshaling
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unixTime := &Time{Time: time.Unix(1234567890, 0)}
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// Test that our custom marshaling works with json.Marshal
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data, err := json.Marshal(unixTime)
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if err != nil {
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t.Fatalf("json.Marshal() error = %v", err)
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}
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// Test that our custom unmarshaling works with json.Unmarshal
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var restored Time
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err = json.Unmarshal(data, &restored)
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if err != nil {
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t.Fatalf("json.Unmarshal() error = %v", err)
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}
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if !restored.Time.Equal(unixTime.Time) {
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t.Errorf("JSON compatibility failed: original = %v, restored = %v", unixTime.Time, restored.Time)
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}
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}
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func TestTime_EdgeCases(t *testing.T) {
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t.Run("negative_timestamp", func(t *testing.T) {
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// Test with negative timestamp (before epoch)
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unixTime := &Time{Time: time.Unix(-1, 0)}
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data, err := unixTime.MarshalJSON()
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if err != nil {
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t.Fatalf("MarshalJSON() with negative timestamp error = %v", err)
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}
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// Negative timestamps will be converted to large positive uint64 values
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// This is expected behavior when casting int64 to uint64
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var restored Time
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err = restored.UnmarshalJSON(data)
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if err != nil {
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t.Fatalf("UnmarshalJSON() with negative timestamp error = %v", err)
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}
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// The restored time won't equal the original due to uint64 conversion
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t.Logf("Original: %v, Marshaled: %s, Restored: %v",
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unixTime.Time, string(data), restored.Time)
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})
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t.Run("very_large_timestamp", func(t *testing.T) {
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// Test with very large timestamp
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unixTime := &Time{Time: time.Unix(9223372036, 0)} // Large but within int64 range
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data, err := unixTime.MarshalJSON()
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if err != nil {
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t.Fatalf("MarshalJSON() with large timestamp error = %v", err)
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}
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var restored Time
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err = restored.UnmarshalJSON(data)
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if err != nil {
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t.Fatalf("UnmarshalJSON() with large timestamp error = %v", err)
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}
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if !restored.Time.Equal(unixTime.Time) {
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t.Errorf("Large timestamp round trip failed: original = %v, restored = %v",
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unixTime.Time, restored.Time)
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}
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})
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t.Run("zero_time", func(t *testing.T) {
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// Test with zero time
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unixTime := &Time{}
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data, err := unixTime.MarshalJSON()
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if err != nil {
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t.Fatalf("MarshalJSON() with zero time error = %v", err)
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}
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expected := "0"
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if string(data) != expected {
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t.Errorf("MarshalJSON() with zero time = %s, want %s", string(data), expected)
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}
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})
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t.Run("unmarshal_with_extra_data", func(t *testing.T) {
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// Test unmarshaling with extra data after the number
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unixTime := &Time{}
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err := unixTime.UnmarshalJSON([]byte("1234567890,"))
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if err != nil {
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t.Fatalf("UnmarshalJSON() with extra data error = %v", err)
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}
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expected := time.Unix(1234567890, 0)
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if !unixTime.Time.Equal(expected) {
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t.Errorf("UnmarshalJSON() with extra data = %v, want %v", unixTime.Time, expected)
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}
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})
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}
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func TestTime_Concurrent(t *testing.T) {
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// Test concurrent access to ensure thread safety
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const numGoroutines = 100
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const numOperations = 100
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done := make(chan bool, numGoroutines)
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for i := 0; i < numGoroutines; i++ {
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go func(id int) {
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defer func() { done <- true }()
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for j := 0; j < numOperations; j++ {
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// Test Now()
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unixTime := Now()
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if unixTime == nil {
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t.Errorf("Goroutine %d: Now() returned nil", id)
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return
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}
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// Test MarshalJSON
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data, err := unixTime.MarshalJSON()
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if err != nil {
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t.Errorf("Goroutine %d: MarshalJSON() error = %v", id, err)
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return
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}
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// Test UnmarshalJSON
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var restored Time
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err = restored.UnmarshalJSON(data)
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if err != nil {
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t.Errorf("Goroutine %d: UnmarshalJSON() error = %v", id, err)
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return
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}
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}
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}(i)
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}
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// Wait for all goroutines to complete
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for i := 0; i < numGoroutines; i++ {
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<-done
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}
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}
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func BenchmarkTime_MarshalJSON(b *testing.B) {
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unixTime := &Time{Time: time.Unix(1234567890, 0)}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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_, err := unixTime.MarshalJSON()
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if err != nil {
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b.Fatal(err)
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}
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}
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}
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func BenchmarkTime_UnmarshalJSON(b *testing.B) {
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data := []byte("1234567890")
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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var unixTime Time
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err := unixTime.UnmarshalJSON(data)
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if err != nil {
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b.Fatal(err)
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}
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}
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}
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func BenchmarkTime_Now(b *testing.B) {
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for i := 0; i < b.N; i++ {
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_ = Now()
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}
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}
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