Added test to read metadata. Still trying to make it work

etor/src/test/groovy/gov/hhs/cdc/trustedintermediary/external/azure/AzureStorageAccountPartnerMetadataStorageTest.groovy

@@ -0,0 +1,58 @@
+package gov.hhs.cdc.trustedintermediary.external.azure
+
+import com.azure.storage.blob.BlobClient
+import com.azure.storage.blob.BlobContainerClient
+import gov.hhs.cdc.trustedintermediary.context.TestApplicationContext
+import gov.hhs.cdc.trustedintermediary.etor.metadata.PartnerMetadata
+import gov.hhs.cdc.trustedintermediary.external.jackson.Jackson
+import gov.hhs.cdc.trustedintermediary.wrappers.formatter.Formatter
+import spock.lang.Specification
+
+import java.time.Instant
+import java.nio.charset.StandardCharsets
+
+class AzureStorageAccountPartnerMetadataStorageTest extends Specification {
+
+    def setup() {
+        TestApplicationContext.reset()
+        TestApplicationContext.init()
+    }
+
+    def "successfully read metadata"() {
+        given: "A mock BlobClient and a successful download"
+        def expectedUniqueId = "uniqueId"
+        def expectedSender = "sender"
+        def expectedReceiver = "receiver"
+        def expectedTimestamp = Instant.parse("2023-12-04T18:51:48.941875Z")
+        def expectedHash = "abcd"
+        PartnerMetadata expectedMetadata = new PartnerMetadata(expectedUniqueId, expectedSender, expectedReceiver, expectedTimestamp, expectedHash)
+        String content = '''{
+            "uniqueId": "${expectedUniqueId}",
+            "sender": "${expectedSender}",
+            "receiver": "${expectedReceiver}",
+            "timestamp": "${expectedTimestamp}",
+            "hash": "${expectedHash}"
+        }'''
+
+        def storageService = AzureStorageAccountPartnerMetadataStorage.getInstance()
+        def metadataFileName = storageService.getMetadataFileName(expectedUniqueId)
+
+        def mockBlobClient = Mock(BlobClient)
+        mockBlobClient.downloadContent() >> content.getBytes(StandardCharsets.UTF_8)
+        TestApplicationContext.register(BlobClient, mockBlobClient)
+
+        def mockContainerClient = GroovyMock(BlobContainerClient)
+        storageService.metaClass.getContainerClient >> { -> mockContainerClient }
+        mockContainerClient.getBlobClient(metadataFileName) >> mockBlobClient
+        TestApplicationContext.register(BlobContainerClient, mockContainerClient)
+
+        TestApplicationContext.register(Formatter, Jackson.getInstance())
+        TestApplicationContext.injectRegisteredImplementations()
+
+        when: "readMetadata is called"
+        PartnerMetadata metadata = storageService.readMetadata(expectedUniqueId)
+
+        then: "The metadata is returned correctly"
+        metadata == expectedMetadata
+    }
+}