nvexec(continues_on): basic transition

test/nvexec/CMakeLists.txt

@@ -15,6 +15,7 @@
 #=============================================================================
 
 set(nvexec_test_sources
+    continues_on.cpp
     bulk.cpp
     ensure_started.cpp
     start_detached.cpp

test/nvexec/continues_on.cpp

@@ -0,0 +1,37 @@
+#include <catch2/catch_all.hpp>
+#include <stdexec/execution.hpp>
+
+#include "nvexec/stream_context.cuh"
+
+namespace
+{
+  TEST_CASE("continues on after just", "[cuda][stream][adaptors][continues_on]")
+  {
+    nvexec::stream_context ctx;
+
+    auto sndr = STDEXEC::just() | STDEXEC::continues_on(ctx.get_scheduler());
+
+    STDEXEC::sync_wait(std::move(sndr));
+  }
+
+  TEST_CASE("continues on after schedule", "[cuda][stream][adaptors][continues_on]")
+  {
+    nvexec::stream_context ctx;
+
+    auto sndr = STDEXEC::schedule(ctx.get_scheduler())
+              | STDEXEC::continues_on(ctx.get_scheduler());
+
+    STDEXEC::sync_wait(std::move(sndr));
+  }
+
+  TEST_CASE("continues on twice in a row should work", "[cuda][stream][adaptors][continues_on]")
+  {
+    nvexec::stream_context ctx;
+
+    auto sndr = STDEXEC::just()
+              | STDEXEC::continues_on(ctx.get_scheduler())
+              | STDEXEC::continues_on(ctx.get_scheduler());
+
+    STDEXEC::sync_wait(std::move(sndr));
+  }
+}  // namespace