go/contract_test.go
Snider 001e90ed13 feat: WithName for explicit service naming
Co-Authored-By: Virgil <virgil@lethean.io>
2026-03-24 22:09:02 +00:00

82 lines
2.7 KiB
Go

// SPDX-License-Identifier: EUPL-1.2
package core_test
import (
"testing"
. "dappco.re/go/core"
"github.com/stretchr/testify/assert"
)
// --- WithService ---
// stub service used only for name-discovery tests.
type stubNamedService struct{}
// stubFactory is a package-level factory so the runtime function name carries
// the package path "core_test.stubFactory" — last segment after '/' is
// "core_test", and after stripping a "_test" suffix we get "core".
// For a real service package such as "dappco.re/go/agentic" the discovered
// name would be "agentic".
func stubFactory(c *Core) Result {
return Result{Value: &stubNamedService{}, OK: true}
}
// TestWithService_NameDiscovery_Good verifies that WithService discovers the
// service name from the factory's package path and registers the instance via
// RegisterService, making it retrievable through c.Services().
//
// stubFactory lives in package "dappco.re/go/core_test", so the last path
// segment is "core_test" — WithService strips the "_test" suffix and registers
// the service under the name "core".
func TestWithService_NameDiscovery_Good(t *testing.T) {
r := New(WithService(stubFactory))
assert.True(t, r.OK)
c := r.Value.(*Core)
names := c.Services()
// Service should be auto-registered under a discovered name (not just "cli" which is built-in)
assert.Greater(t, len(names), 1, "expected auto-discovered service to be registered alongside built-in 'cli'")
}
// TestWithService_FactorySelfRegisters_Good verifies that when a factory
// returns Result{OK:true} with no Value (it registered itself), WithService
// does not attempt a second registration and returns success.
func TestWithService_FactorySelfRegisters_Good(t *testing.T) {
selfReg := func(c *Core) Result {
// Factory registers directly, returns no instance.
c.Service("self", Service{})
return Result{OK: true}
}
r := New(WithService(selfReg))
assert.True(t, r.OK)
c := r.Value.(*Core)
// "self" must be present and registered exactly once.
svc := c.Service("self")
assert.True(t, svc.OK, "expected self-registered service to be present")
}
// --- WithName ---
func TestWithName_Good(t *testing.T) {
r := New(
WithName("custom", func(c *Core) Result {
return Result{Value: &stubNamedService{}, OK: true}
}),
)
assert.True(t, r.OK)
c := r.Value.(*Core)
assert.Contains(t, c.Services(), "custom")
}
// TestWithService_FactoryError_Bad verifies that a factory returning an error
// causes New() to stop and propagate the failure.
func TestWithService_FactoryError_Bad(t *testing.T) {
r := New(WithService(func(c *Core) Result {
return Result{Value: E("test", "factory failed", nil), OK: false}
}))
assert.False(t, r.OK, "expected New() to fail when factory returns error")
}