[Commonizer] Simplify creation of SerializedMetadataLibraryProvider

native/commonizer/src/org/jetbrains/kotlin/descriptors/commonizer/metadata/utils/SerializedMetadataLibraryProvider.kt

@@ -6,6 +6,7 @@
 package org.jetbrains.kotlin.descriptors.commonizer.metadata.utils
 
 import kotlinx.metadata.klib.KlibModuleMetadata
+import org.jetbrains.kotlin.library.SerializedMetadata
 
 private typealias FragmentPartContents = ByteArray
 private typealias ListOfFragmentParts = List<FragmentPartContents>
@@ -38,6 +39,12 @@ class SerializedMetadataLibraryProvider(
         }.toMap()
     }
 
+    constructor(serializedMetadata: SerializedMetadata) : this(
+        serializedMetadata.module,
+        serializedMetadata.fragments,
+        serializedMetadata.fragmentNames
+    )
+
     override fun packageMetadataParts(fqName: String): Set<String> {
         return fragmentMap.getValue(fqName).keys
     }

native/commonizer/tests/org/jetbrains/kotlin/descriptors/commonizer/utils/assertions.kt

@@ -23,8 +23,8 @@ fun assertIsDirectory(file: File) {
 
 @ExperimentalContracts
 fun assertModulesAreEqual(reference: SerializedMetadata, generated: SerializedMetadata, target: CommonizerTarget) {
-    val referenceModule = with(reference) { KlibModuleMetadata.read(SerializedMetadataLibraryProvider(module, fragments, fragmentNames)) }
-    val generatedModule = with(generated) { KlibModuleMetadata.read(SerializedMetadataLibraryProvider(module, fragments, fragmentNames)) }
+    val referenceModule = KlibModuleMetadata.read(SerializedMetadataLibraryProvider(reference))
+    val generatedModule = KlibModuleMetadata.read(SerializedMetadataLibraryProvider(generated))
 
     when (val result = MetadataDeclarationsComparator.compare(referenceModule, generatedModule)) {
         is Result.Success -> Unit