1 files changed, 35 insertions, 0 deletions
diff --git a/v_windows/v/vlib/flag/default_flag_options_test.v b/v_windows/v/vlib/flag/default_flag_options_test.v
new file mode 100644
index 0000000..7cf37d4
--- /dev/null
+++ b/v_windows/v/vlib/flag/default_flag_options_test.v
@@ -0,0 +1,35 @@
+import os
+
+const source = 'vlib/flag/testdata/simplest_flag_program.v'
+
+const simple_flag_app_executable = os.real_path(os.join_path(os.cache_dir(), 'simple_flag_app.exe'))
+
+fn testsuite_begin() {
+	os.chdir(@VMODROOT) or {}
+	os.rm(simple_flag_app_executable) or {}
+	res := os.execute('${@VEXE} -o $simple_flag_app_executable $source')
+	assert res.exit_code == 0
+	assert os.execute(simple_flag_app_executable).exit_code == 0
+}
+
+fn testsuite_end() {
+	os.rm(simple_flag_app_executable) or {}
+	assert true
+}
+
+fn check_program(opts string, extension string) {
+	result := source.replace('.v', extension)
+	res := os.execute('$simple_flag_app_executable $opts')
+	lines := os.read_lines(result) or { panic(err) }
+	assert res.exit_code == 0
+	assert res.output.split_into_lines() == lines
+}
+
+fn test_default_builtin_flag_options() {
+	check_program('', '.out')
+	check_program(' -- --help', '.dashdash.help.out')
+	check_program(' -- --version', '.dashdash.version.out')
+	check_program(' -h', '.help.out')
+	check_program(' --help', '.help.out')
+	check_program(' --version', '.version.out')
+}