going full courtside

backend-go/internal/config/config_test.go

@@ -0,0 +1,115 @@
+package config
+
+import (
+	"os"
+	"strings"
+	"testing"
+)
+
+func TestLoad_Defaults(t *testing.T) {
+	for _, key := range []string{"PORT", "API_BASE_PATH", "POLL_INTERVAL_MS", "NODE_ENV", "SMTP_PORT"} {
+		os.Unsetenv(key)
+	}
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	if cfg.Port != 3001 {
+		t.Errorf("Port = %d, want 3001", cfg.Port)
+	}
+	if cfg.APIBasePath != "/v1" {
+		t.Errorf("APIBasePath = %q, want /v1", cfg.APIBasePath)
+	}
+	if cfg.PollIntervalMS != 60000 {
+		t.Errorf("PollIntervalMS = %d, want 60000", cfg.PollIntervalMS)
+	}
+	if cfg.NodeEnv != "development" {
+		t.Errorf("NodeEnv = %q, want development", cfg.NodeEnv)
+	}
+	if cfg.SMTPPort != 587 {
+		t.Errorf("SMTPPort = %d, want 587", cfg.SMTPPort)
+	}
+}
+
+func TestLoad_InvalidPollInterval(t *testing.T) {
+	os.Setenv("POLL_INTERVAL_MS", "500")
+	defer os.Unsetenv("POLL_INTERVAL_MS")
+
+	_, err := Load()
+	if err == nil {
+		t.Fatal("expected error for poll interval < 1000")
+	}
+}
+
+func TestDSN_DatabaseURL(t *testing.T) {
+	cfg := &Config{DatabaseURL: "postgres://user:pass@localhost/db"}
+	dsn := cfg.DSN()
+	if !strings.Contains(dsn, "sslmode=disable") {
+		t.Error("DSN should append sslmode=disable")
+	}
+	if !strings.HasPrefix(dsn, "postgres://user:pass@localhost/db") {
+		t.Error("DSN should preserve original URL")
+	}
+}
+
+func TestDSN_DatabaseURL_WithSSLMode(t *testing.T) {
+	cfg := &Config{DatabaseURL: "postgres://user:pass@localhost/db?sslmode=require"}
+	dsn := cfg.DSN()
+	if strings.Count(dsn, "sslmode=") != 1 {
+		t.Error("DSN should not duplicate sslmode")
+	}
+}
+
+func TestDSN_Components(t *testing.T) {
+	cfg := &Config{
+		DBHost:     "myhost",
+		DBPort:     5433,
+		DBUser:     "myuser",
+		DBPassword: "mypass",
+		DBName:     "mydb",
+	}
+	dsn := cfg.DSN()
+	if !strings.Contains(dsn, "host=myhost") {
+		t.Error("DSN should contain host")
+	}
+	if !strings.Contains(dsn, "port=5433") {
+		t.Error("DSN should contain port")
+	}
+	if !strings.Contains(dsn, "user=myuser") {
+		t.Error("DSN should contain user")
+	}
+	if !strings.Contains(dsn, "dbname=mydb") {
+		t.Error("DSN should contain dbname")
+	}
+}
+
+func TestGetEnv(t *testing.T) {
+	os.Setenv("TEST_KEY_KOINPING", "value")
+	defer os.Unsetenv("TEST_KEY_KOINPING")
+
+	if got := getEnv("TEST_KEY_KOINPING", "fallback"); got != "value" {
+		t.Errorf("got %q, want %q", got, "value")
+	}
+	if got := getEnv("NONEXISTENT_KEY_KOINPING", "fallback"); got != "fallback" {
+		t.Errorf("got %q, want %q", got, "fallback")
+	}
+}
+
+func TestGetEnvInt(t *testing.T) {
+	os.Setenv("TEST_INT_KOINPING", "42")
+	defer os.Unsetenv("TEST_INT_KOINPING")
+
+	if got := getEnvInt("TEST_INT_KOINPING", 0); got != 42 {
+		t.Errorf("got %d, want 42", got)
+	}
+	if got := getEnvInt("NONEXISTENT_INT_KOINPING", 99); got != 99 {
+		t.Errorf("got %d, want 99", got)
+	}
+
+	os.Setenv("TEST_INT_KOINPING", "notanumber")
+	if got := getEnvInt("TEST_INT_KOINPING", 99); got != 99 {
+		t.Errorf("got %d, want 99 for invalid int", got)
+	}
+}