From bf900719174913774e9559302ac90e11c68ac87a Mon Sep 17 00:00:00 2001
From: Joel Klinghed <the_jk@spawned.biz>
Date: Thu, 4 Sep 2025 22:24:31 +0200
Subject: args: Increase test coverage

---
 test/args.cc | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/test/args.cc b/test/args.cc
index 8c8c06c..b60a4a4 100644
--- a/test/args.cc
+++ b/test/args.cc
@@ -188,6 +188,19 @@ TEST(args, options_short_missing_value) {
   EXPECT_EQ("foo: option requires an argument -- 'd'\n", ss.str());
 }
 
+TEST(args, options_short_unknown_value) {
+  auto args = Args::create();
+  SETUP_OPTIONS(args);
+  Builder builder;
+  auto arg = builder.add("foo")
+             .add("-X")
+             .build();
+  EXPECT_FALSE(args->run(arg.c(), arg.v()));
+  std::stringstream ss;
+  args->print_error(ss);
+  EXPECT_EQ("foo: invalid option -- 'X'\n", ss.str());
+}
+
 TEST(args, options_long_missing_value) {
   auto args = Args::create();
   SETUP_OPTIONS(args);
@@ -201,6 +214,32 @@ TEST(args, options_long_missing_value) {
   EXPECT_EQ("foo: option '--form' requires an argument\n", ss.str());
 }
 
+TEST(args, options_long_unsupported_value) {
+  auto args = Args::create();
+  SETUP_OPTIONS(args);
+  Builder builder;
+  auto arg = builder.add("foo")
+             .add("--cold=feet")
+             .build();
+  EXPECT_FALSE(args->run(arg.c(), arg.v()));
+  std::stringstream ss;
+  args->print_error(ss);
+  EXPECT_EQ("foo: option '--cold' doesn't allow an argument\n", ss.str());
+}
+
+TEST(args, options_long_unknown_value) {
+  auto args = Args::create();
+  SETUP_OPTIONS(args);
+  Builder builder;
+  auto arg = builder.add("foo")
+             .add("--experience")
+             .build();
+  EXPECT_FALSE(args->run(arg.c(), arg.v()));
+  std::stringstream ss;
+  args->print_error(ss);
+  EXPECT_EQ("foo: unrecognized option '--experience'\n", ss.str());
+}
+
 TEST(args, options_short_dash_value) {
   auto args = Args::create();
   SETUP_OPTIONS(args);
@@ -356,3 +395,18 @@ circle, shape or
       --invert=[ARG]
 )", ss.str());
 }
+
+TEST(args, help_long_word) {
+  auto args = Args::create();
+  std::stringstream ss;
+  auto opt = args->option('a', "arg", "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
+  args->print_help(ss, 20);
+  EXPECT_EQ(R"(Mandatory arguments
+ to long options are
+ mandatory for short
+ options too.
+  -a, --arg
+aaaaaaaaaaaaaaaaaaa-
+aaaaaaaaaaaaaaaaaaa
+)", ss.str());
+}
-- 
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