1 files changed, 183 insertions, 0 deletions
diff --git a/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulatorTest.kt b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulatorTest.kt
new file mode 100644
index 00000000..e1641cbb
--- /dev/null
+++ b/sources/hv-collector-dcae-app-simulator/src/test/kotlin/org/onap/dcae/collectors/veshv/simulators/dcaeapp/impl/DcaeAppSimulatorTest.kt
@@ -0,0 +1,183 @@
+/*
+ * ============LICENSE_START=======================================================
+ * dcaegen2-collectors-veshv
+ * ================================================================================
+ * Copyright (C) 2018 NOKIA
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae.collectors.veshv.simulators.dcaeapp.impl
+
+import arrow.core.Left
+import arrow.core.None
+import arrow.core.Some
+import arrow.effects.IO
+import com.google.protobuf.ByteString
+import com.nhaarman.mockitokotlin2.any
+import com.nhaarman.mockitokotlin2.eq
+import com.nhaarman.mockitokotlin2.mock
+import com.nhaarman.mockitokotlin2.never
+import com.nhaarman.mockitokotlin2.verify
+import com.nhaarman.mockitokotlin2.whenever
+import org.assertj.core.api.Assertions.assertThat
+import org.jetbrains.spek.api.Spek
+import org.jetbrains.spek.api.dsl.describe
+import org.jetbrains.spek.api.dsl.it
+import org.mockito.ArgumentMatchers.anySet
+import org.onap.ves.VesEventOuterClass.CommonEventHeader
+import org.onap.ves.VesEventOuterClass.VesEvent
+import java.util.concurrent.ConcurrentLinkedQueue
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk@nokia.com>
+ * @since August 2018
+ */
+internal class DcaeAppSimulatorTest : Spek({
+    lateinit var consumerFactory: ConsumerFactory
+    lateinit var messageStreamValidation: MessageStreamValidation
+    lateinit var consumer: Consumer
+    lateinit var cut: DcaeAppSimulator
+
+    beforeEachTest {
+        consumerFactory = mock()
+        messageStreamValidation = mock()
+        consumer = mock()
+        cut = DcaeAppSimulator(consumerFactory, messageStreamValidation)
+
+        whenever(consumerFactory.createConsumerForTopics(anySet())).thenReturn(IO.just(consumer))
+    }
+
+    fun consumerState(vararg messages: ByteArray) = ConsumerState(ConcurrentLinkedQueue(messages.toList()))
+
+    describe("listenToTopics") {
+        val topics = setOf("perf3gpp", "faults")
+
+        it("should fail when topic list is empty") {
+            val result = cut.listenToTopics(setOf()).attempt().unsafeRunSync()
+            assertThat(result.isLeft()).isTrue()
+        }
+
+        it("should fail when topic list contains empty strings") {
+            val result = cut.listenToTopics(setOf("perf3gpp", " ", "faults")).attempt().unsafeRunSync()
+            assertThat(result.isLeft()).isTrue()
+        }
+
+        it("should subscribe to given topics") {
+            cut.listenToTopics(topics).unsafeRunSync()
+            verify(consumerFactory).createConsumerForTopics(topics)
+        }
+
+        it("should subscribe to given topics when called with comma separated list") {
+            cut.listenToTopics("perf3gpp,faults").unsafeRunSync()
+            verify(consumerFactory).createConsumerForTopics(topics)
+        }
+
+        it("should handle errors") {
+            // given
+            val error = RuntimeException("WTF")
+            whenever(consumerFactory.createConsumerForTopics(anySet()))
+                    .thenReturn(IO.raiseError(error))
+
+            // when
+            val result = cut.listenToTopics("perf3gpp").attempt().unsafeRunSync()
+
+            // then
+            assertThat(result).isEqualTo(Left(error))
+        }
+    }
+
+    describe("state") {
+
+        it("should return None when topics hasn't been initialized") {
+            assertThat(cut.state()).isEqualTo(None)
+        }
+
+        describe("when topics are initialized") {
+            beforeEachTest {
+                cut.listenToTopics("perf3gpp").unsafeRunSync()
+            }
+
+            it("should return some state when it has been set") {
+                val state = consumerState()
+                whenever(consumer.currentState()).thenReturn(state)
+
+                assertThat(cut.state()).isEqualTo(Some(state))
+            }
+        }
+    }
+
+    describe("resetState") {
+        it("should do nothing when topics hasn't been initialized") {
+            cut.resetState().unsafeRunSync()
+            verify(consumer, never()).reset()
+        }
+
+        describe("when topics are initialized") {
+            beforeEachTest {
+                cut.listenToTopics("perf3gpp").unsafeRunSync()
+            }
+
+            it("should reset the state") {
+                // given
+                whenever(consumer.reset()).thenReturn(IO.unit)
+
+                // when
+                cut.resetState().unsafeRunSync()
+
+                // then
+                verify(consumer).reset()
+            }
+        }
+    }
+
+    describe("validate") {
+        beforeEachTest {
+            whenever(messageStreamValidation.validate(any(), any())).thenReturn(IO.just(true))
+        }
+
+        it("should use empty list when consumer is unavailable") {
+            // when
+            val result = cut.validate("['The JSON']".byteInputStream()).unsafeRunSync()
+
+            // then
+            verify(messageStreamValidation).validate(any(), eq(emptyList()))
+            assertThat(result).isTrue()
+        }
+
+        it("should delegate to MessageStreamValidation") {
+            // given
+            cut.listenToTopics("perf3gpp").unsafeRunSync()
+            whenever(consumer.currentState()).thenReturn(consumerState(vesEvent().toByteArray()))
+
+            // when
+            val result = cut.validate("['The JSON']".byteInputStream()).unsafeRunSync()
+
+            // then
+            verify(messageStreamValidation).validate(any(), any())
+            assertThat(result).isTrue()
+        }
+    }
+})
+
+
+private const val DUMMY_EVENT_ID = "aaa"
+private const val DUMMY_PAYLOAD = "payload"
+
+private fun vesEvent(eventId: String = DUMMY_EVENT_ID, payload: String = DUMMY_PAYLOAD): VesEvent {
+    return VesEvent.newBuilder()
+            .setCommonEventHeader(CommonEventHeader.newBuilder()
+                    .setEventId(eventId))
+            .setEventFields(ByteString.copyFrom(payload.toByteArray()))
+            .build()
+}