Adding Unit Tests

Signed-off-by: Alfredo Gutierrez <[email protected]>

server/src/test/java/com/hedera/block/server/config/BlockNodeContextFactoryTest.java

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+package com.hedera.block.server.config;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class BlockNodeContextFactoryTest {
+
+        @Test
+        void create_returnsBlockNodeContext() {
+            BlockNodeContext context = BlockNodeContextFactory.create();
+
+            assertNotNull(context.metrics());
+            assertNotNull(context.configuration());
+        }
+
+}

server/src/test/java/com/hedera/block/server/config/BlockNodeContextTest.java

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+package com.hedera.block.server.config;
+
+import com.swirlds.config.api.Configuration;
+import com.swirlds.metrics.api.Metrics;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+class BlockNodeContextTest {
+
+    @Test
+    void BlockNodeContext_initializesWithMetricsAndConfiguration() {
+        Metrics metrics = mock(Metrics.class);
+        Configuration configuration = mock(Configuration.class);
+
+        BlockNodeContext context = new BlockNodeContext(metrics, configuration);
+
+        assertEquals(metrics, context.metrics());
+        assertEquals(configuration, context.configuration());
+    }
+}

server/src/test/java/com/hedera/block/server/metrics/MetricsServiceTest.java

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+package com.hedera.block.server.metrics;
+
+import com.swirlds.metrics.api.Counter;
+import com.swirlds.metrics.api.LongGauge;
+import com.swirlds.metrics.api.Metrics;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+class MetricsServiceTest {
+
+    @Test
+    void MetricsService_initializesExampleGauge() {
+        Metrics metrics = mock(Metrics.class);
+        LongGauge exampleGauge = mock(LongGauge.class);
+        when(metrics.getOrCreate(any(LongGauge.Config.class))).thenReturn(exampleGauge);
+
+        MetricsService service = new MetricsService(metrics);
+
+        assertEquals(exampleGauge, service.exampleGauge);
+    }
+
+    @Test
+    void MetricsService_initializesExampleCounter() {
+        Metrics metrics = mock(Metrics.class);
+        Counter exampleCounter = mock(Counter.class);
+        when(metrics.getOrCreate(any(Counter.Config.class))).thenReturn(exampleCounter);
+
+        MetricsService service = new MetricsService(metrics);
+
+        assertEquals(exampleCounter, service.exampleCounter);
+    }
+
+    @Test
+    void MetricsService_handlesNullMetrics() {
+        assertThrows(NullPointerException.class, () -> new MetricsService(null));
+    }
+}