Github user schaumb commented on a diff in the pull request:
https://github.com/apache/commons-cli/pull/12#discussion_r121406356
--- Diff:
src/test/java/org/apache/commons/cli/PatternOptionBuilderTest.java ---
@@ -159,13 +161,12 @@ public void testURLPattern() throws Exception
@Test
public void testExistingFilePattern() throws Exception
{
- final Options options = PatternOptionBuilder.parsePattern("f<");
+ final Options options = PatternOptionBuilder.parsePattern("f<g<");
final CommandLineParser parser = new PosixParser();
- final CommandLine line = parser.parse(options, new String[] {
"-f", "test.properties" });
-
- assertEquals("f value", new File("test.properties"),
line.getOptionObject("f"));
-
- // todo test if an error is returned if the file doesn't exists
(when it's implemented)
+ final CommandLine line = parser.parse(options, new String[] {
"-f", "test.properties", "-g", "/dev/null" });
+
+ assertNotNull("option g not parsed, or not FileInputStream",
(FileInputStream) line.getOptionObject("g"));
+ assertNull("option f parsed", (FileInputStream)
line.getOptionObject("f"));
--- End diff --
So basically `<` means this parameter is an existing file parameter.
When I built the options manually, the type is what I need to set is
`PatternOptionBuilder.EXISTING_FILE_VALUE`, which is `FileInputStream`.
This is why think `line.getOptionObject("f")` need to return an object of
type `FileInputStream`.
Yes, It is null because test.properties does not exist, or not readable.
This can be made clearer somehow.
Another task is to find a cross-platform file which is exist (and not
/dev/null).
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