add very basic tests and action

includes action for build. plus tests, fmt and vet

.github/workflows/ci.yml

@@ -0,0 +1,35 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Build
+        run: go build ./...
+
+      - name: Format check
+        run: |
+          if [ -n "$(gofmt -l .)" ]; then
+            echo "The following files are not formatted:"
+            gofmt -l .
+            exit 1
+          fi
+
+      - name: Vet
+        run: go vet ./...
+
+      - name: Test
+        run: go test ./...

internal/iatadb/iatadb_test.go

@@ -0,0 +1,110 @@
+package iatadb_test
+
+import (
+	"testing"
+
+	"github.com/MeshCore-Beacon/beacon-server/internal/iatadb"
+)
+
+func TestLookup_KnownIATA(t *testing.T) {
+	entry, ok := iatadb.Lookup("YVR")
+	if !ok {
+		t.Fatal("expected YVR to be found")
+	}
+	if entry.Country != "CA" {
+		t.Errorf("expected country CA, got %s", entry.Country)
+	}
+	if entry.Continent != "NA" {
+		t.Errorf("expected continent NA, got %s", entry.Continent)
+	}
+}
+
+func TestLookup_UnknownIATA(t *testing.T) {
+	entry, ok := iatadb.Lookup("ZZZZZ")
+	if ok {
+		t.Fatal("expected ZZZZZ not to be found")
+	}
+	if entry.Country != "" {
+		t.Errorf("expected country to be empty, got %s", entry.Country)
+	}
+	if entry.Continent != "" {
+		t.Errorf("expected continent to be empty, got %s", entry.Continent)
+	}
+}
+
+func TestCountryFor_Known(t *testing.T) {
+	country := iatadb.CountryFor("YVR")
+	if country != "CA" {
+		t.Fatalf("expected country for YVR to be CA, got %s", country)
+	}
+}
+
+func TestCountryFor_Unknown(t *testing.T) {
+	country := iatadb.CountryFor("ZZZZZ")
+	if country != "" {
+		t.Fatalf("expected no country for IATA ZZZZZ, got %s", country)
+	}
+}
+
+func TestContinentFor_Known(t *testing.T) {
+	continent := iatadb.ContinentFor("YVR")
+	if continent != "NA" {
+		t.Fatalf("expected continent for YVR to be NA, got %s", continent)
+	}
+}
+
+func TestContinentFor_Unknown(t *testing.T) {
+	continent := iatadb.ContinentFor("ZZZZZ")
+	if continent != "" {
+		t.Fatalf("expected no continient for IATA ZZZZZ, got %s", continent)
+	}
+}
+
+func TestBuildAllowedSet_Empty(t *testing.T) {
+	result := iatadb.BuildAllowedSet(nil, nil)
+	if result != nil {
+		t.Error("expected nil for empty filter")
+	}
+}
+
+func TestBuildAllowedSet_ByCountry(t *testing.T) {
+	allowed := iatadb.BuildAllowedSet([]string{"CA"}, nil)
+	if allowed == nil {
+		t.Fatal("expected non-nil result")
+	}
+	if _, ok := allowed["YVR"]; !ok {
+		t.Error("expected YVR to be allowed")
+	}
+	if _, ok := allowed["JFK"]; ok {
+		t.Error("expected JFK to be excluded")
+	}
+}
+
+func TestBuildAllowedSet_ByContinent(t *testing.T) {
+	allowed := iatadb.BuildAllowedSet(nil, []string{"NA"})
+	if allowed == nil {
+		t.Fatal("expected non-nil result")
+	}
+	if _, ok := allowed["YVR"]; !ok {
+		t.Error("expected YVR to be allowed")
+	}
+	if _, ok := allowed["LHR"]; ok {
+		t.Error("expected LHR (EU) to be excluded")
+	}
+}
+
+func TestBuildAllowedSet_ORSemantics(t *testing.T) {
+	allowed := iatadb.BuildAllowedSet([]string{"CA"}, []string{"EU"})
+	if allowed == nil {
+		t.Fatal("expected non-nil result")
+	}
+	if _, ok := allowed["YVR"]; !ok {
+		t.Error("expected YVR (CA) to be allowed")
+	}
+	if _, ok := allowed["LHR"]; !ok {
+		t.Error("expected LHR (EU) to be allowed")
+	}
+	if _, ok := allowed["GRU"]; ok {
+		t.Error("expected GRU (SA/BR) to be excluded")
+	}
+}