1 files changed, 141 insertions, 0 deletions
diff --git a/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/CoreKtTest.kt b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/CoreKtTest.kt
new file mode 100644
index 00000000..2eb11b27
--- /dev/null
+++ b/sources/hv-collector-utils/src/test/kotlin/org/onap/dcae/collectors/veshv/utils/arrow/CoreKtTest.kt
@@ -0,0 +1,141 @@
+/*
+ * ============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.utils.arrow
+
+import arrow.core.None
+import arrow.core.Option
+import arrow.core.Some
+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.given
+import org.jetbrains.spek.api.dsl.it
+import org.jetbrains.spek.api.dsl.on
+import java.util.concurrent.atomic.AtomicReference
+
+
+/**
+ * @author Piotr Jaszczyk <piotr.jaszczyk></piotr.jaszczyk>@nokia.com>
+ * @since August 2018
+ */
+internal class CoreKtTest : Spek({
+    describe("AtomicReference.getOption") {
+        given("empty atomic reference") {
+            val atomicReference = AtomicReference<String>()
+
+            on("getOption") {
+                val result = atomicReference.getOption()
+
+                it("should be None") {
+                    assertThat(result).isEqualTo(None)
+                }
+            }
+        }
+        given("non-empty atomic reference") {
+            val initialValue = "reksio"
+            val atomicReference = AtomicReference(initialValue)
+
+            on("getOption") {
+                val result = atomicReference.getOption()
+
+                it("should be Some($initialValue)") {
+                    assertThat(result).isEqualTo(Some(initialValue))
+                }
+            }
+        }
+    }
+
+    describe("Option.fromNullablesChain") {
+        given("one non-null element") {
+            val just = "some text"
+            on("calling factory") {
+                val result = Option.fromNullablesChain(just)
+
+                it("should return Some($just)") {
+                    assertThat(result).isEqualTo(Some(just))
+                }
+            }
+        }
+
+        given("one null element") {
+            val just: String? = null
+            on("calling factory") {
+                val result = Option.fromNullablesChain(just)
+
+                it("should return None") {
+                    assertThat(result).isEqualTo(None)
+                }
+            }
+        }
+
+        given("first non-null element") {
+            val first = "some text"
+            val second: String? = null
+            var secondAskedForValue = false
+            on("calling factory") {
+                val result = Option.fromNullablesChain(first, { secondAskedForValue = true; second })
+
+                it("should return Some($first)") {
+                    assertThat(result).isEqualTo(Some(first))
+                }
+
+                it("should have not called second provider (should be lazy)") {
+                    assertThat(secondAskedForValue).isFalse()
+                }
+            }
+        }
+
+        given("two non-null elements") {
+            val first = "some text"
+            val second = "another text"
+            on("calling factory") {
+                val result = Option.fromNullablesChain(first, { second })
+
+                it("should return Some($first)") {
+                    assertThat(result).isEqualTo(Some(first))
+                }
+            }
+        }
+
+        given("two null elements") {
+            val first: String? = null
+            val second: String? = null
+            on("calling factory") {
+                val result = Option.fromNullablesChain(first, { second })
+
+                it("should return None") {
+                    assertThat(result).isEqualTo(None)
+                }
+            }
+        }
+
+        given("second non-null element") {
+            val first: String? = null
+            val second = "another text"
+            on("calling factory") {
+                val result = Option.fromNullablesChain(first, { second })
+
+                it("should return Some($second)") {
+                    assertThat(result).isEqualTo(Some(second))
+                }
+            }
+        }
+    }
+})