Added nargs test for multiple values to a choices() argument

test/test_choices.cpp

@@ -38,6 +38,24 @@ TEST_CASE("Parse argument that is in the fixed number of allowed choices, with "
   REQUIRE(program.get<int>("--value") == 1);
 }
 
+TEST_CASE(
+    "Parse nargs argument that is in the fixed number of allowed choices, with "
+    "other positional argument" *
+    test_suite("choices")) {
+  argparse::ArgumentParser program("test");
+  program.add_argument("--input")
+      .default_value(std::string{"baz"})
+      .choices("foo", "bar", "baz")
+      .nargs(2);
+  program.add_argument("--value").scan<'i', int>().default_value(0);
+
+  REQUIRE_NOTHROW(
+      program.parse_args({"test", "--input", "foo", "bar", "--value", "1"}));
+  REQUIRE((program.get<std::vector<std::string>>("--input") ==
+           std::vector<std::string>{"foo", "bar"}));
+  REQUIRE(program.get<int>("--value") == 1);
+}
+
 TEST_CASE("Parse argument that is in the fixed number of allowed choices, with "
           "other positional argument (reversed)" *
           test_suite("choices")) {
@@ -53,6 +71,24 @@ TEST_CASE("Parse argument that is in the fixed number of allowed choices, with "
   REQUIRE(program.get<int>("--value") == 1);
 }
 
+TEST_CASE(
+    "Parse nargs argument that is in the fixed number of allowed choices, with "
+    "other positional argument (reversed)" *
+    test_suite("choices")) {
+  argparse::ArgumentParser program("test");
+  program.add_argument("--input")
+      .default_value(std::string{"baz"})
+      .choices("foo", "bar", "baz")
+      .nargs(2);
+  program.add_argument("--value").scan<'i', int>().default_value(0);
+
+  REQUIRE_NOTHROW(
+      program.parse_args({"test", "--value", "1", "--input", "foo", "bar"}));
+  REQUIRE((program.get<std::vector<std::string>>("--input") ==
+           std::vector<std::string>{"foo", "bar"}));
+  REQUIRE(program.get<int>("--value") == 1);
+}
+
 TEST_CASE("Parse argument that is in the fixed number of allowed choices, with "
           "invalid default" *
           test_suite("choices")) {