From f74c6dd1052b182867edf4dc294a11efd24b9d4b Mon Sep 17 00:00:00 2001
From: MikeDvorskiy <mikhail.dvorskiy@intel.com>
Date: Mon, 16 Dec 2024 13:56:18 +0100
Subject: [PATCH] [oneDPL][dpcpp][tested API][ranges] + test coverage enhanced

---
 test/xpu_api/ranges/xpu_std_drop_view.pass.cpp   | 3 ++-
 test/xpu_api/ranges/xpu_std_iota_view.pass.cpp   | 3 ++-
 test/xpu_api/ranges/xpu_std_single_view.pass.cpp | 2 +-
 test/xpu_api/ranges/xpu_std_subrange.pass.cpp    | 5 +++--
 4 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/test/xpu_api/ranges/xpu_std_drop_view.pass.cpp b/test/xpu_api/ranges/xpu_std_drop_view.pass.cpp
index 7057f4b3e57..060ca7999d4 100644
--- a/test/xpu_api/ranges/xpu_std_drop_view.pass.cpp
+++ b/test/xpu_api/ranges/xpu_std_drop_view.pass.cpp
@@ -28,7 +28,8 @@ main()
 #if _ENABLE_STD_RANGES_TESTING
     auto test = [](){
         auto res = std::ranges::views::iota(0, 4) | std::ranges::views::drop(2);
-        return res.size() == 2 && res[0] == 2 && res[1] == 3 && *res.begin() == 2 && res.end() - res.begin() == 2;
+        return res.size() == 2 && res[0] == 2 && res[1] == 3 && *res.begin() == 2
+               && res.end() - res.begin() == 2;
     };
     const bool res = kernel_test<class std_drop_test>(test);
     EXPECT_TRUE(res, "Wrong result of drop_view check within a kernel");
diff --git a/test/xpu_api/ranges/xpu_std_iota_view.pass.cpp b/test/xpu_api/ranges/xpu_std_iota_view.pass.cpp
index d47b671bc24..50ab60f8608 100644
--- a/test/xpu_api/ranges/xpu_std_iota_view.pass.cpp
+++ b/test/xpu_api/ranges/xpu_std_iota_view.pass.cpp
@@ -29,7 +29,8 @@ main()
     auto test = [](){
         auto res = std::ranges::views::iota(0, 4);
         return res.size() == 4 && res[0] == 0 && res[1] == 1 && res[2] == 2 && res[3] == 3 &&
-               *(res.begin() + 2) == 2 && (res.end() - res.begin()) == 4;
+            *(res.begin() + 2) == 2 && (res.end() - res.begin()) == 4 && !res.empty() &&
+            res.front() == 0 && res.back() == 3;
     };
     const bool res = kernel_test<class std_iota_test>(test);
     EXPECT_TRUE(res, "Wrong result of iota_view check within a kernel");
diff --git a/test/xpu_api/ranges/xpu_std_single_view.pass.cpp b/test/xpu_api/ranges/xpu_std_single_view.pass.cpp
index 4ed59374078..5824635b7bc 100644
--- a/test/xpu_api/ranges/xpu_std_single_view.pass.cpp
+++ b/test/xpu_api/ranges/xpu_std_single_view.pass.cpp
@@ -28,7 +28,7 @@ main()
 #if _ENABLE_STD_RANGES_TESTING
     auto test = [](){
         auto res = std::ranges::views::single(1);
-        return res.size() == 1 && res[0] == 1 && *res.begin() == 1 && res.end() - res.begin() == 1;
+        return res.size() == 1 && res[0] == 1 && *res.begin() == 1 && res.end() - res.begin() == 1 && *res.data() == 1;
     };
     const bool res = kernel_test<class std_single_test>(test);
     EXPECT_TRUE(res, "Wrong result of single_view check within a kernel");
diff --git a/test/xpu_api/ranges/xpu_std_subrange.pass.cpp b/test/xpu_api/ranges/xpu_std_subrange.pass.cpp
index 4f081dfb765..bc6df95f8d9 100644
--- a/test/xpu_api/ranges/xpu_std_subrange.pass.cpp
+++ b/test/xpu_api/ranges/xpu_std_subrange.pass.cpp
@@ -29,8 +29,9 @@ main()
     auto test = [](){
         auto v = std::ranges::views::iota(0, 4);
         auto res = std::ranges::subrange(v.begin() + 1, v.end());
-        return res.size() == 3 && res[0] == 0 && res[1] == 1 && res[2] == 2 &&
-               (*res.begin() + 2) == 2 && res.end() - res.begin() == 3;
+
+        return res.size() == 3 && res[0] == 1 && res[1] == 2 && res[2] == 3 && (*res.begin() + 2) == 3 && 
+            res.end() - res.begin() == 3 && *std::ranges::next(res.begin()) == 2 && *std::ranges::prev(res.end()) == 3;
     };
     const bool res = kernel_test<class std_reverse_test>(test);
     EXPECT_TRUE(res, "Wrong result of subrange check within a kernel");