feat: downloader

internal/pkg/grib/grib_test.go

@@ -0,0 +1,62 @@
+package grib
+
+import (
+	"context"
+	"testing"
+	"time"
+)
+
+func TestServiceCreation(t *testing.T) {
+	cfg := ServiceConfig{
+		Dir:      "/tmp/grib_test",
+		TTL:      24 * time.Hour,
+		CacheTTL: 1 * time.Hour,
+		Redis:    &MockRedis{},
+		Parallel: 2,
+	}
+
+	service, err := New(cfg)
+	if err != nil {
+		t.Fatalf("Failed to create service: %v", err)
+	}
+	defer service.Close()
+
+	if service == nil {
+		t.Fatal("Service is nil")
+	}
+}
+
+func TestNearestRun(t *testing.T) {
+	now := time.Date(2024, 1, 15, 14, 30, 0, 0, time.UTC)
+	expected := time.Date(2024, 1, 15, 12, 0, 0, 0, time.UTC)
+
+	result := nearestRun(now)
+	if !result.Equal(expected) {
+		t.Errorf("Expected %v, got %v", expected, result)
+	}
+}
+
+func TestPressureFromAlt(t *testing.T) {
+	alt := 10000.0 // 10km
+	pressure := pressureFromAlt(alt)
+
+	// At 10km, pressure should be around 264 hPa
+	if pressure < 200 || pressure > 300 {
+		t.Errorf("Unexpected pressure at 10km: %f hPa", pressure)
+	}
+}
+
+// MockRedis for testing
+type MockRedis struct{}
+
+func (m *MockRedis) Lock(ctx context.Context, key string, ttl time.Duration) (func(context.Context), error) {
+	return func(ctx context.Context) {}, nil
+}
+
+func (m *MockRedis) Set(key string, value []byte, ttl time.Duration) error {
+	return nil
+}
+
+func (m *MockRedis) Get(key string) ([]byte, error) {
+	return nil, nil
+}