test: add handler and config tests (auth, tasks, habits, savings, profile, interest, freeze)

internal/config/config_test.go

@@ -0,0 +1,79 @@
+package config
+
+import (
+	"os"
+	"testing"
+)
+
+func TestLoad_Defaults(t *testing.T) {
+	// Clear env to test defaults
+	envKeys := []string{"DATABASE_URL", "JWT_SECRET", "PORT", "RESEND_API_KEY", "FROM_EMAIL", "FROM_NAME", "APP_URL", "TELEGRAM_BOT_TOKEN"}
+	originals := make(map[string]string)
+	for _, k := range envKeys {
+		originals[k] = os.Getenv(k)
+		os.Unsetenv(k)
+	}
+	defer func() {
+		for k, v := range originals {
+			if v != "" {
+				os.Setenv(k, v)
+			}
+		}
+	}()
+
+	cfg := Load()
+
+	if cfg.Port != "8080" {
+		t.Errorf("expected default port 8080, got %s", cfg.Port)
+	}
+	if cfg.JWTSecret != "change-me-in-production" {
+		t.Errorf("expected default JWT secret, got %s", cfg.JWTSecret)
+	}
+	if cfg.FromEmail != "noreply@digital-home.site" {
+		t.Errorf("expected default from email, got %s", cfg.FromEmail)
+	}
+}
+
+func TestLoad_FromEnv(t *testing.T) {
+	os.Setenv("PORT", "9090")
+	os.Setenv("JWT_SECRET", "my-secret")
+	defer func() {
+		os.Unsetenv("PORT")
+		os.Unsetenv("JWT_SECRET")
+	}()
+
+	cfg := Load()
+
+	if cfg.Port != "9090" {
+		t.Errorf("expected port 9090, got %s", cfg.Port)
+	}
+	if cfg.JWTSecret != "my-secret" {
+		t.Errorf("expected JWT secret my-secret, got %s", cfg.JWTSecret)
+	}
+}
+
+func TestGetEnv(t *testing.T) {
+	tests := []struct {
+		name     string
+		key      string
+		envValue string
+		def      string
+		want     string
+	}{
+		{"returns env value", "TEST_KEY_1", "env_val", "default", "env_val"},
+		{"returns default when empty", "TEST_KEY_2", "", "default", "default"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if tt.envValue != "" {
+				os.Setenv(tt.key, tt.envValue)
+				defer os.Unsetenv(tt.key)
+			}
+			got := getEnv(tt.key, tt.def)
+			if got != tt.want {
+				t.Errorf("getEnv(%s) = %s, want %s", tt.key, got, tt.want)
+			}
+		})
+	}
+}