add implement of md5 and sha1 for MockAbsoluteFile

mirai-core-mock/src/internal/remotefile/absolutefile/MockAbsoluteFolder.kt

@@ -47,16 +47,29 @@ private fun MockServerRemoteFile.toMockAbsFile(
     sha1: ByteArray = byteArrayOf()
 ): AbsoluteFile {
     val parent = this.parent.toMockAbsFolder(files)
-    // todo md5 and sha
-    return MockAbsoluteFile(
-        sha1,
-        md5,
-        files,
-        parent,
-        this.id,
-        this.name,
-        parent.absolutePath.removeSuffix("/") + "/" + this.name
-    )
+    return if (md5.isEmpty() || sha1.isEmpty()) {
+        asExternalResource().use { res ->
+            MockAbsoluteFile(
+                if (sha1.isEmpty()) res.sha1 else sha1,
+                if (md5.isEmpty()) res.md5 else md5,
+                files,
+                parent,
+                this.id,
+                this.name,
+                parent.absolutePath.removeSuffix("/") + "/" + this.name
+            )
+        }
+    } else {
+        MockAbsoluteFile(
+            sha1,
+            md5,
+            files,
+            parent,
+            this.id,
+            this.name,
+            parent.absolutePath.removeSuffix("/") + "/" + this.name
+        )
+    }
 }
 
 internal open class MockAbsoluteFolder(

mirai-core-mock/test/AbsoluteFileTest.kt

@@ -22,9 +22,11 @@ import net.mamoe.mirai.mock.internal.serverfs.MockServerFileSystemImpl
 import net.mamoe.mirai.mock.utils.simpleMemberInfo
 import net.mamoe.mirai.utils.ExternalResource.Companion.toExternalResource
 import net.mamoe.mirai.utils.cast
+import net.mamoe.mirai.utils.md5
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.Test
 import java.nio.file.FileSystem
+import kotlin.test.assertContentEquals
 import kotlin.test.assertEquals
 import kotlin.test.assertNotEquals
 
@@ -97,4 +99,34 @@ internal class AbsoluteFileTest : MockBotTestBase() {
         assertEquals(true, file.exists())
         assertNotEquals(null, folder.resolveFiles("test.txt").firstOrNull())
     }
+
+    @Test
+    fun testMD5() = runTest {
+        val bytes = "test".toByteArray()
+        val file = bytes.toExternalResource().use { res ->
+            files.root.uploadNewFile("/test.txt", res)
+        }
+        assertContentEquals(bytes.md5(), file.md5)
+    }
+
+    @Test
+    fun testMD5WithResolve() = runTest {
+        val bytes = "test".toByteArray()
+        bytes.toExternalResource().use { res ->
+            files.root.uploadNewFile("/test.txt", res)
+        }
+        val file = files.root.resolveFiles("/test.txt").toList()
+        assertEquals(1, file.size)
+        assertContentEquals(bytes.md5(), file[0].md5)
+    }
+
+    @Test
+    fun testMD5WithIDResolve() = runTest {
+        val bytes = "test".toByteArray()
+        val absFile = bytes.toExternalResource().use { res ->
+            files.root.uploadNewFile("/test.txt", res)
+        }
+        val file = files.root.resolveFileById(absFile.id, true)!!
+        assertContentEquals(bytes.md5(), file.md5)
+    }
 }