test: demonstrate alias conversion (#399)

fix in strcase dependency
properly converts screaming snakecase to camelcase

`MY_FLAG` -> `myFlag`

Author: jazanne

aliases/alias_test.go

@@ -81,6 +81,14 @@ func Test_GenerateAliases(t *testing.T) {
 			},
 			want: map[string][]string{"some_flag": slice("SomeFlag")},
 		},
+		{
+			name:  "screaming snake case to camel case",
+			flags: slice("SOME_FLAG"),
+			aliases: []o.Alias{
+				alias(o.CamelCase),
+			},
+			want: map[string][]string{"SOME_FLAG": slice("someFlag")},
+		},
 		{
 			name:  "file exact pattern",
 			flags: slice(testFlagKey),