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Improve Aho-Corasick multiple occurrence test #7590

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19 changes: 12 additions & 7 deletions src/test/java/com/thealgorithms/strings/AhoCorasickTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -95,16 +95,21 @@ void testPatternAtEnd() {
}

/**
* Test searching for patterns with multiple occurrences in the input text.
* The expected sizes are 1 and 1, and the expected positions are 2 and 3
* for the patterns "AT" and "T" respectively.
*/
* Test searching for patterns with multiple occurrences in the input text.
* The expected positions are 2 and 4 for "AT", and 3 and 5 for "T".
*/
@Test
void testMultipleOccurrencesOfPattern() {
// Define patterns with multiple occurrences in the text
final var searchText = "GCATATCG";
final var searchPatterns = new String[] {"AT", "T"};
final var expected = Map.of("AT", new ArrayList<>(List.of(2)), "T", new ArrayList<>(List.of(3)));
assertEquals(expected, AhoCorasick.search(text, searchPatterns));

final var expected =
Map.of(
"AT", new ArrayList<>(List.of(2, 4)),
"T", new ArrayList<>(List.of(3, 5))
);

assertEquals(expected, AhoCorasick.search(searchText, searchPatterns));
}

/**
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