wip

Signed-off-by: Attila Mészáros <a_meszaros@apple.com>

Author: csviri

operator-framework/src/test/java/io/javaoperatorsdk/operator/config/loader/provider/YamlConfigProviderTest.java

@@ -0,0 +1,144 @@
+/*
+ * Copyright Java Operator SDK Authors
+ *
+ * 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.
+ */
+package io.javaoperatorsdk.operator.config.loader.provider;
+
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.Duration;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+
+class YamlConfigProviderTest {
+
+  // -- Map constructor --------------------------------------------------------
+
+  @Test
+  void returnsEmptyWhenKeyAbsent() {
+    var provider = new YamlConfigProvider(Map.of());
+    assertThat(provider.getValue("josdk.no.such.key", String.class)).isEmpty();
+  }
+
+  @Test
+  void returnsEmptyForNullKey() {
+    var provider = new YamlConfigProvider(Map.of("josdk", Map.of("test", "value")));
+    assertThat(provider.getValue(null, String.class)).isEmpty();
+  }
+
+  @Test
+  void readsTopLevelString() {
+    var provider = new YamlConfigProvider(Map.of("key", "hello"));
+    assertThat(provider.getValue("key", String.class)).hasValue("hello");
+  }
+
+  @Test
+  void readsNestedString() {
+    var provider =
+        new YamlConfigProvider(Map.of("josdk", Map.of("test", Map.of("string", "hello"))));
+    assertThat(provider.getValue("josdk.test.string", String.class)).hasValue("hello");
+  }
+
+  @Test
+  void readsBoolean() {
+    var provider = new YamlConfigProvider(Map.of("josdk", Map.of("test", Map.of("bool", "true"))));
+    assertThat(provider.getValue("josdk.test.bool", Boolean.class)).hasValue(true);
+  }
+
+  @Test
+  void readsInteger() {
+    var provider = new YamlConfigProvider(Map.of("josdk", Map.of("test", Map.of("integer", 42))));
+    assertThat(provider.getValue("josdk.test.integer", Integer.class)).hasValue(42);
+  }
+
+  @Test
+  void readsLong() {
+    var provider =
+        new YamlConfigProvider(Map.of("josdk", Map.of("test", Map.of("long", 123456789L))));
+    assertThat(provider.getValue("josdk.test.long", Long.class)).hasValue(123456789L);
+  }
+
+  @Test
+  void readsDouble() {
+    var provider =
+        new YamlConfigProvider(Map.of("josdk", Map.of("test", Map.of("double", "3.14"))));
+    assertThat(provider.getValue("josdk.test.double", Double.class)).hasValue(3.14);
+  }
+
+  @Test
+  void readsDuration() {
+    var provider =
+        new YamlConfigProvider(Map.of("josdk", Map.of("test", Map.of("duration", "PT30S"))));
+    assertThat(provider.getValue("josdk.test.duration", Duration.class))
+        .hasValue(Duration.ofSeconds(30));
+  }
+
+  @Test
+  void returnsEmptyWhenIntermediateSegmentMissing() {
+    var provider = new YamlConfigProvider(Map.of("josdk", Map.of("other", "value")));
+    assertThat(provider.getValue("josdk.test.key", String.class)).isEmpty();
+  }
+
+  @Test
+  void returnsEmptyWhenIntermediateSegmentIsLeaf() {
+    // "josdk.test" is a leaf – trying to drill further should return empty
+    var provider = new YamlConfigProvider(Map.of("josdk", Map.of("test", "leaf")));
+    assertThat(provider.getValue("josdk.test.key", String.class)).isEmpty();
+  }
+
+  @Test
+  void throwsForUnsupportedType() {
+    var provider =
+        new YamlConfigProvider(Map.of("josdk", Map.of("test", Map.of("unsupported", "value"))));
+    assertThatIllegalArgumentException()
+        .isThrownBy(() -> provider.getValue("josdk.test.unsupported", AtomicInteger.class))
+        .withMessageContaining("Unsupported config type");
+  }
+
+  // -- Path constructor -------------------------------------------------------
+
+  @Test
+  void loadsFromFile(@TempDir Path dir) throws IOException {
+    Path file = dir.resolve("test.yaml");
+    Files.writeString(
+        file,
+        """
+        josdk:
+          test:
+            string: from-file
+            integer: 7
+        """);
+
+    var provider = new YamlConfigProvider(file);
+    assertThat(provider.getValue("josdk.test.string", String.class)).hasValue("from-file");
+    assertThat(provider.getValue("josdk.test.integer", Integer.class)).hasValue(7);
+  }
+
+  @Test
+  void throwsUncheckedIOExceptionForMissingFile(@TempDir Path dir) {
+    Path missing = dir.resolve("does-not-exist.yaml");
+    assertThatExceptionOfType(UncheckedIOException.class)
+        .isThrownBy(() -> new YamlConfigProvider(missing))
+        .withMessageContaining("does-not-exist.yaml");
+  }
+}