add job queue and code submission tests; remove unused main executable

backend/model/submission_test.go

@@ -0,0 +1,71 @@
+package model
+
+import (
+	"encoding/json"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCodeSubmissionSerialization(t *testing.T) {
+	// Create a submission
+	now := time.Now()
+	submission := CodeSubmission{
+		ID:          "test-id",
+		Code:        "print('Hello, World!')",
+		Language:    "python",
+		Input:       "test input",
+		Status:      "completed",
+		QueuedAt:    now.Add(-2 * time.Second),
+		StartedAt:   now.Add(-1 * time.Second),
+		CompletedAt: now,
+		Output:      "Hello, World!",
+	}
+
+	// Serialize to JSON
+	jsonBytes, err := json.Marshal(submission)
+	assert.NoError(t, err)
+	assert.NotNil(t, jsonBytes)
+
+	// Deserialize back
+	var decoded CodeSubmission
+	err = json.Unmarshal(jsonBytes, &decoded)
+	assert.NoError(t, err)
+
+	// Verify fields match
+	assert.Equal(t, submission.ID, decoded.ID)
+	assert.Equal(t, submission.Code, decoded.Code)
+	assert.Equal(t, submission.Language, decoded.Language)
+	assert.Equal(t, submission.Input, decoded.Input)
+	assert.Equal(t, submission.Status, decoded.Status)
+	assert.Equal(t, submission.Output, decoded.Output)
+
+	// Time fields need special handling due to JSON serialization
+	assert.Equal(t, submission.QueuedAt.Format(time.RFC3339), decoded.QueuedAt.Format(time.RFC3339))
+	assert.Equal(t, submission.StartedAt.Format(time.RFC3339), decoded.StartedAt.Format(time.RFC3339))
+	assert.Equal(t, submission.CompletedAt.Format(time.RFC3339), decoded.CompletedAt.Format(time.RFC3339))
+}
+
+func TestCodeSubmissionDefaults(t *testing.T) {
+	// Test that zero time values work correctly
+	submission := CodeSubmission{
+		ID:       "test-id",
+		Code:     "print('Hello')",
+		Language: "python",
+		Status:   "pending",
+	}
+
+	assert.True(t, submission.QueuedAt.IsZero())
+	assert.True(t, submission.StartedAt.IsZero())
+	assert.True(t, submission.CompletedAt.IsZero())
+
+	// Test JSON marshaling with zero time values
+	jsonBytes, err := json.Marshal(submission)
+	assert.NoError(t, err)
+
+	// The zero time values should still be included in the JSON
+	jsonStr := string(jsonBytes)
+	assert.Contains(t, jsonStr, `"id":"test-id"`)
+	assert.Contains(t, jsonStr, `"status":"pending"`)
+}