[SHELL32_APITEST] Basic ILIsEqual tests (reactos#7438)

Author: whindsaks

modules/rostests/apitests/shell32/ItemIDList.cpp

@@ -9,7 +9,10 @@
 #include "shelltest.h"
 #include <shellutils.h>
 
-enum { DIRBIT = 1, FILEBIT = 2 };
+enum { 
+    DIRBIT = 1, FILEBIT = 2,
+    PT_COMPUTER_REGITEM = 0x2E,
+};
 
 static BYTE GetPIDLType(LPCITEMIDLIST pidl)
 {
@@ -202,3 +205,58 @@ START_TEST(PIDL)
         skip("?\n");
     ILFree(pidl);
 }
+
+START_TEST(ILIsEqual)
+{
+    LPITEMIDLIST p1, p2, pidl;
+
+    p1 = p2 = NULL;
+    ok_int(ILIsEqual(p1, p2), TRUE);
+
+    ITEMIDLIST emptyitem = {}, emptyitem2 = {};
+    ok_int(ILIsEqual(&emptyitem, &emptyitem2), TRUE);
+
+    ok_int(ILIsEqual(NULL, &emptyitem), FALSE); // These two are not equal for some reason
+
+    p1 = SHCloneSpecialIDList(NULL, CSIDL_DRIVES, FALSE);
+    p2 = SHCloneSpecialIDList(NULL, CSIDL_DRIVES, FALSE);
+    if (p1 && p2)
+    {
+        ok_int(ILIsEqual(p1, p2), TRUE);
+        p1->mkid.abID[0] = PT_COMPUTER_REGITEM; // RegItem in wrong parent
+        ok_int(ILIsEqual(p1, p2), FALSE);
+    }
+    else
+    {
+        skip("Unable to initialize test\n");
+    }
+    ILFree(p1);
+    ILFree(p2);
+
+    // ILIsParent must compare like ILIsEqual
+    p1 = SHSimpleIDListFromPath(L"c:\\");
+    p2 = SHSimpleIDListFromPath(L"c:\\dir\\file");
+    if (p1 && p2)
+    {
+        ok_int(ILIsParent(NULL, p1, FALSE), FALSE); // NULL is always false
+        ok_int(ILIsParent(p1, NULL, FALSE), FALSE); // NULL is always false
+        ok_int(ILIsParent(NULL, NULL, FALSE), FALSE); // NULL is always false
+        ok_int(ILIsParent(p1, p1, FALSE), TRUE); // I'm my own parent
+        ok_int(ILIsParent(p1, p1, TRUE), FALSE); // Self is not immediate
+        ok_int(ILIsParent(p1, p2, FALSE), TRUE); // Grandchild
+        ok_int(ILIsParent(p1, p2, TRUE), FALSE); // Grandchild is not immediate
+        ok_ptr(ILFindChild(p1, p2), ILGetNext(ILGetNext(p2))); // Child is "dir\\file", skip MyComputer and C:
+        ok_int(ILIsEmpty(pidl = ILFindChild(p1, p1)) && pidl, TRUE); // Self
+        ILRemoveLastID(p2);
+        ok_int(ILIsParent(p1, p2, TRUE), TRUE); // Immediate child
+
+        p1->mkid.abID[0] = PT_COMPUTER_REGITEM; // RegItem in wrong parent
+        ok_int(ILIsParent(p1, p2, FALSE), FALSE);
+    }
+    else
+    {
+        skip("Unable to initialize test\n");
+    }
+    ILFree(p1);
+    ILFree(p2);
+}

modules/rostests/apitests/shell32/testlist.c

@@ -19,6 +19,7 @@ extern void func_FindExecutable(void);
 extern void func_GetDisplayNameOf(void);
 extern void func_GUIDFromString(void);
 extern void func_ILCreateFromPath(void);
+extern void func_ILIsEqual(void);
 extern void func_Int64ToString(void);
 extern void func_IShellFolderViewCB(void);
 extern void func_menu(void);
@@ -63,6 +64,7 @@ const struct test winetest_testlist[] =
     { "GetDisplayNameOf", func_GetDisplayNameOf },
     { "GUIDFromString", func_GUIDFromString },
     { "ILCreateFromPath", func_ILCreateFromPath },
+    { "ILIsEqual", func_ILIsEqual },
     { "Int64ToString", func_Int64ToString },
     { "IShellFolderViewCB", func_IShellFolderViewCB },
     { "menu", func_menu },