Add test for nvcc options that changes c++ dialect from c++17 to c++14

tests/fixtures/compiler/cpp_17.cu

@@ -0,0 +1,47 @@
+#include <cstdlib>
+#include <iostream>
+#include <set>
+#include <string>
+#include <iterator>
+
+#include <tuple>
+
+struct S {
+    int n;
+    std::string s;
+    float d;
+    bool operator<(const S& rhs) const
+    {
+        // compares n to rhs.n,
+        // then s to rhs.s,
+        // then d to rhs.d
+        return std::tie(n, s, d) < std::tie(rhs.n, rhs.s, rhs.d);
+    }
+};
+
+int main()
+{
+    std::set<S> mySet;
+
+    // pre C++17:
+    {
+	    S value{42, "Test", 3.14};
+	    std::set<S>::iterator iter;
+	    bool inserted;
+
+	    // unpacks the return val of insert into iter and inserted
+	    std::tie(iter, inserted) = mySet.insert(value);
+
+	    if (inserted)
+		    std::cout << "Value was inserted\n";
+    }
+
+	// with C++17:
+    {
+        S value{100, "abc", 100.0};
+        const auto [iter, inserted] = mySet.insert(value);
+
+        if (inserted)
+		    std::cout << "Value(" << iter->n << ", " << iter->s << ", ...) was inserted" << "\n";
+    }
+}

tests/fixtures/fixtures.py

@@ -27,10 +27,15 @@ def fixtures_path(tests_path):
     return os.path.join(tests_path, "fixtures")
 
 
+@pytest.fixture(scope="session")
+def compiler_cpp_17_fpath(fixtures_path: str):
+    return os.path.join(fixtures_path, "compiler", "cpp_17.cu")
+
+
 @pytest.fixture(scope="session")
 def sample_magic_cu_line():
     # fmt: off
-    return '--profile --profiler-args "--metrics l1tex__t_sectors_pipe_lsu_mem_global_op_ld.sum"'  # noqa: E501
+    return '--profile --profiler-args "--metrics l1tex__t_sectors_pipe_lsu_mem_global_op_ld.sum" --compiler-args "--optimize 3"'  # noqa: E501
     # fmt: on
 
 

tests/test_plugin.py

@@ -3,6 +3,7 @@ import math
 import os
 import re
 import shutil
+import subprocess
 from typing import List
 
 import pytest
@@ -88,6 +89,21 @@ def test_compile(
         plugin._compile(gname)
 
 
+def test_compile_args(
+    plugin: NVCCPlugin,
+    compiler_cpp_17_fpath: str,
+):
+    gname = "test_compile_args"
+    copy_source_to_group(compiler_cpp_17_fpath, gname, plugin.workdir)
+
+    exec_fpath = plugin._compile(gname, compiler_args="--std c++17")
+    assert os.path.exists(exec_fpath)
+
+    # should fail due to the source file having c++ 17 features
+    with pytest.raises(subprocess.CalledProcessError):
+        exec_fpath = plugin._compile(gname, compiler_args="--std c++14")
+
+
 def test_run(
     plugin: NVCCPlugin,
     sample_cuda_fpath: str,
@@ -143,7 +159,10 @@ def test_compile_and_run_multiple_files(
     for fpath in multiple_source_fpaths:
         copy_source_to_group(fpath, gname, plugin.workdir)
     output = plugin._compile_and_run(
-        gname, argparse.Namespace(timeit=False, profile=True, profiler_args="")
+        group_name=gname,
+        args=argparse.Namespace(
+            timeit=False, profile=True, profiler_args="", compiler_args=""
+        ),
     )
     check_profiler_output(output)
 
@@ -165,7 +184,10 @@ def test_compile_and_run_multiple_files_shared(
         else:
             copy_source_to_group(fpath, "shared", plugin.workdir)
     output = plugin._compile_and_run(
-        gname, argparse.Namespace(timeit=False, profile=True, profiler_args="")
+        group_name=gname,
+        args=argparse.Namespace(
+            timeit=False, profile=True, profiler_args="", compiler_args=""
+        ),
     )
     check_profiler_output(output)