Mail access: IMAP + app password (IPv4 only), not Gmail API

internal/config/config_test.go

@@ -0,0 +1,72 @@
+package config
+
+import "testing"
+
+func TestLoadDefaults(t *testing.T) {
+	// Ensure no ambient values leak into the test.
+	for _, k := range []string{
+		"EMAIL_AGENT_ENV", "EMAIL_AGENT_ADDR", "EMAIL_AGENT_PORT",
+		"EMAIL_AGENT_DB_PATH", "EMAIL_AGENT_LOG_LEVEL", "EMAIL_AGENT_PUBLIC_BASE_URL",
+	} {
+		t.Setenv(k, "")
+	}
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+	if cfg.Port != DefaultPort {
+		t.Errorf("Port = %d, want %d", cfg.Port, DefaultPort)
+	}
+	if cfg.Addr != DefaultAddr {
+		t.Errorf("Addr = %q, want %q", cfg.Addr, DefaultAddr)
+	}
+	if cfg.Env != DefaultEnv {
+		t.Errorf("Env = %q, want %q", cfg.Env, DefaultEnv)
+	}
+	if cfg.DBPath != DefaultDB {
+		t.Errorf("DBPath = %q, want %q", cfg.DBPath, DefaultDB)
+	}
+}
+
+func TestLoadOverrides(t *testing.T) {
+	t.Setenv("EMAIL_AGENT_ENV", "production")
+	t.Setenv("EMAIL_AGENT_PORT", "9000")
+	t.Setenv("EMAIL_AGENT_DB_PATH", "/tmp/custom.db")
+	t.Setenv("EMAIL_AGENT_LOG_LEVEL", "debug")
+	t.Setenv("EMAIL_AGENT_PUBLIC_BASE_URL", "https://example.test/")
+	t.Setenv("EMAIL_AGENT_ADDR", "")
+
+	cfg, err := Load()
+	if err != nil {
+		t.Fatalf("Load() error = %v", err)
+	}
+	if cfg.Port != 9000 {
+		t.Errorf("Port = %d, want 9000", cfg.Port)
+	}
+	if cfg.Addr != ":9000" {
+		t.Errorf("Addr = %q, want %q", cfg.Addr, ":9000")
+	}
+	if !cfg.IsProduction() {
+		t.Errorf("IsProduction() = false, want true")
+	}
+	if cfg.PublicBaseURL != "https://example.test" {
+		t.Errorf("PublicBaseURL = %q, want trimmed URL", cfg.PublicBaseURL)
+	}
+}
+
+func TestLoadInvalidPort(t *testing.T) {
+	t.Setenv("EMAIL_AGENT_PORT", "not-a-number")
+	t.Setenv("EMAIL_AGENT_ADDR", "")
+	if _, err := Load(); err == nil {
+		t.Fatal("Load() error = nil, want error for invalid port")
+	}
+}
+
+func TestLoadInvalidEnv(t *testing.T) {
+	t.Setenv("EMAIL_AGENT_ENV", "staging")
+	t.Setenv("EMAIL_AGENT_ADDR", "")
+	if _, err := Load(); err == nil {
+		t.Fatal("Load() error = nil, want error for invalid env")
+	}
+}