unit_test.go

package main

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestHaversine(t *testing.T) {
	// Testing with known geographical coordinates
	result := haversine(51.5007, 0.1246, 40.6892, 74.0445) // London to New York
	expected := 5575.0                                     // expected distance in kilometers

	// The distance should be accurate within a small error
	assert.InEpsilon(t, expected, result, 0.01, "Haversine function should calculate correct distance")
}

// func TestReadDataChunks(t *testing.T) {
// 	// Mock a small CSV file for testing
// 	fileContent := `id_delivery,lat,lng,timestamp
// 1,35.0,51.0,1609459200
// 1,35.1,51.1,1609459260
// 2,36.0,52.0,1609459320`

// 	// Create temporary CSV file
// 	f, err := os.CreateTemp("", "test_data.csv")
// 	assert.NoError(t, err)
// 	defer os.Remove(f.Name())

// 	_, err = f.Write([]byte(fileContent))
// 	assert.NoError(t, err)
// 	f.Close()

// 	// Test the readDataChunks function
// 	ch, err := readDataChunks(f.Name())
// 	assert.NoError(t, err)

// 	var i int = 1
// 	for points := range ch {
// 		assert.Greater(t, len(points), 0, "Expected to read at least one point")
// 		assert.Equal(t, strconv.Itoa(i), points[0].ID, "Expected the Chunk ID Number to be %d", i)
// 		i += 1
// 	}
// }

// func TestFilterInvalidPoints(t *testing.T) {
// 	points := []DeliveryPoint{
// 		{ID: "1", Latitude: 35.0, Longitude: 40.0, Timestamp: 1000},
// 		{ID: "1", Latitude: 35.1, Longitude: 40.1, Timestamp: 1300}, // Valid speed
// 		{ID: "1", Latitude: 35.0, Longitude: 40.0, Timestamp: 1400}, // Invalid speed
// 	}

// 	filteredPoints := filterInvalidPoints(points)
// 	assert.Len(t, filteredPoints, 1, "Expected only valid points to be returned")
// }

// func TestCalculateFare(t *testing.T) {
// 	points := []DeliveryPoint{
// 		{ID: "1", Latitude: 35.0, Longitude: 40.0, Timestamp: 1609459200},
// 		{ID: "1", Latitude: 35.1, Longitude: 40.1, Timestamp: 1609459260}, // Valid point
// 		{ID: "1", Latitude: 35.2, Longitude: 40.2, Timestamp: 1609459320}, // Valid point
// 	}

// 	// Expect fare > 3.47 (the minimum) since we have valid points
// 	fare := calculateFare(points)
// 	assert.GreaterOrEqual(t, fare, 3.47, "Fare should not be less than the minimum required fare")
// 	assert.Greater(t, fare, 1.30, "Fare should be greater than the base flag amount")
// }