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-rw-r--r--usage_test.go19
1 files changed, 19 insertions, 0 deletions
diff --git a/usage_test.go b/usage_test.go
index 5d379a1..de40ebd 100644
--- a/usage_test.go
+++ b/usage_test.go
@@ -309,3 +309,22 @@ Global options:
p.WriteHelp(&help)
assert.Equal(t, expectedHelp, help.String())
}
+
+func TestUsageWithOptionalLongNames(t *testing.T) {
+ expectedHelp := `Usage: example [-a PLACEHOLDER] -b SHORTONLY2
+
+Options:
+ -a PLACEHOLDER some help [default: some val]
+ -b SHORTONLY2 some help2
+ --help, -h display this help and exit
+`
+ var args struct {
+ ShortOnly string `arg:"-a,--" help:"some help" default:"some val" placeholder:"PLACEHOLDER"`
+ ShortOnly2 string `arg:"-b,--,required" help:"some help2"`
+ }
+ p, err := NewParser(Config{Program: "example"}, &args)
+ assert.NoError(t, err)
+ var help bytes.Buffer
+ p.WriteHelp(&help)
+ assert.Equal(t, expectedHelp, help.String())
+}