ntdll/tests: Add tests for RtlGetCompressionWorkSpaceSize.

dlls/ntdll/tests/rtl.c

@@ -1685,6 +1685,52 @@ static void test_RtlCompressBuffer(void)
     HeapFree(GetProcessHeap(), 0, workspace);
 }
 
+static void test_RtlGetCompressionWorkSpaceSize(void)
+{
+    ULONG compress_workspace, decompress_workspace;
+    NTSTATUS status;
+
+    if (!pRtlGetCompressionWorkSpaceSize)
+    {
+        win_skip("RtlGetCompressionWorkSpaceSize is not available\n");
+        return;
+    }
+
+    /* test invalid format / engine */
+    status = pRtlGetCompressionWorkSpaceSize(COMPRESSION_FORMAT_NONE, &compress_workspace,
+                                             &decompress_workspace);
+    todo_wine
+    ok(status == STATUS_INVALID_PARAMETER, "got wrong status 0x%08x\n", status);
+
+    status = pRtlGetCompressionWorkSpaceSize(COMPRESSION_FORMAT_DEFAULT, &compress_workspace,
+                                             &decompress_workspace);
+    todo_wine
+    ok(status == STATUS_INVALID_PARAMETER, "got wrong status 0x%08x\n", status);
+
+    status = pRtlGetCompressionWorkSpaceSize(0xFF, &compress_workspace, &decompress_workspace);
+    todo_wine
+    ok(status == STATUS_UNSUPPORTED_COMPRESSION, "got wrong status 0x%08x\n", status);
+
+    /* test LZNT1 with normal and maximum compression */
+    compress_workspace = decompress_workspace = 0xdeadbeef;
+    status = pRtlGetCompressionWorkSpaceSize(COMPRESSION_FORMAT_LZNT1, &compress_workspace,
+                                             &decompress_workspace);
+    todo_wine
+    ok(status == STATUS_SUCCESS, "got wrong status 0x%08x\n", status);
+    ok(compress_workspace != 0, "got wrong compress_workspace %u\n", compress_workspace);
+    todo_wine
+    ok(decompress_workspace == 0x1000, "got wrong decompress_workspace %u\n", decompress_workspace);
+
+    compress_workspace = decompress_workspace = 0xdeadbeef;
+    status = pRtlGetCompressionWorkSpaceSize(COMPRESSION_FORMAT_LZNT1 | COMPRESSION_ENGINE_MAXIMUM,
+                                             &compress_workspace, &decompress_workspace);
+    todo_wine
+    ok(status == STATUS_SUCCESS, "got wrong status 0x%08x\n", status);
+    ok(compress_workspace != 0, "got wrong compress_workspace %u\n", compress_workspace);
+    todo_wine
+    ok(decompress_workspace == 0x1000, "got wrong decompress_workspace %u\n", decompress_workspace);
+}
+
 START_TEST(rtl)
 {
     InitFunctionPtrs();
@@ -1712,4 +1758,5 @@ START_TEST(rtl)
     test_LdrAddRefDll();
     test_LdrLockLoaderLock();
     test_RtlCompressBuffer();
+    test_RtlGetCompressionWorkSpaceSize();
 }