feat(ingress): 实现 JDBC 信箱轮询、入站持久化与对拍测试 (U05)

src/test/kotlin/com/gzzn/omms/msgexchange/ingress/InboxPollerTest.kt

@@ -0,0 +1,45 @@
+package com.gzzn.omms.msgexchange.ingress
+
+import com.gzzn.omms.msgexchange.domain.ProcStatus
+import com.gzzn.omms.msgexchange.infra.stub.StubInbox
+import com.gzzn.omms.msgexchange.infra.stub.StubProcState
+import com.gzzn.omms.msgexchange.processing.Pump
+import io.micronaut.test.extensions.junit5.annotation.MicronautTest
+import jakarta.inject.Inject
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertNotNull
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+
+/** 主路径：JDBC 轮询语义（stub 下 InboxPoller + 外部写信箱模拟）。 */
+@MicronautTest
+class InboxPollerTest {
+
+    @Inject lateinit var poller: InboxPoller
+    @Inject lateinit var pump: Pump
+    @Inject lateinit var stubInbox: StubInbox
+    @Inject lateinit var stubProc: StubProcState
+
+    @BeforeEach
+    fun clean() {
+        stubInbox.clear()
+        stubProc.clear()
+    }
+
+    @Test
+    fun `poller enqueues externally written mailbox rows`() {
+        val id = stubInbox.simulateExternalWrite("<MSG/>")
+        assertEquals(1, poller.pollOnce())
+        assertNotNull(stubProc.snapshotOf(id))
+        assertEquals(ProcStatus.PENDING, stubProc.snapshotOf(id)!!.state)
+    }
+
+    @Test
+    fun `poller is idempotent for already enqueued rows`() {
+        val id = stubInbox.simulateExternalWrite("<MSG/>")
+        poller.pollOnce()
+        assertEquals(0, poller.pollOnce())
+        pump.tick()
+        assertEquals(ProcStatus.FAILED, stubProc.snapshotOf(id)!!.state)
+    }
+}