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Merged
ganesh47 merged 1 commit into from
Jun 15, 2025
Merged

Improve code coverage #76

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36 changes: 36 additions & 0 deletions src/test/java/org/nintynine/problems/AdditionalCoverageTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -75,4 +75,40 @@ void testPrimeTotientResultToString() {
MathP34.PrimeTotientResult res2 = new MathP34.PrimeTotientResult(false, 8);
assertEquals("Number is not prime, \u03c6(m) = 8", res2.toString());
}

@Test
@DisplayName("TruthP55.Node string and hash code")
void testTruthP55NodeToStringHash() {
TruthP55.Node left1 = new TruthP55.Node("X", null, null);
TruthP55.Node right1 = new TruthP55.Node("X", null, null);
TruthP55.Node root1 = new TruthP55.Node("X", left1, right1);

TruthP55.Node left2 = new TruthP55.Node("X", null, null);
TruthP55.Node right2 = new TruthP55.Node("X", null, null);
TruthP55.Node root2 = new TruthP55.Node("X", left2, right2);

assertEquals("(X (X NIL NIL) (X NIL NIL))", root1.toString());
assertEquals(root1.toString(), root2.toString());
assertEquals(root1.hashCode(), root2.hashCode());
assertTrue(root1.equals(root1));
assertFalse(root1.equals("X"));
}

@Test
@DisplayName("GoldbachPair isValid handles invalid pairs")
void testGoldbachPairInvalid() {
MathP40.GoldbachPair invalid = new MathP40.GoldbachPair(4, 6);
assertFalse(invalid.isValid());
}

@Test
@DisplayName("HuffmanDecoder detects incomplete codes")
void testDecoderIncomplete() {
List<MathP50.HuffmanCode> codes =
List.of(new MathP50.HuffmanCode("a", "0"), new MathP50.HuffmanCode("b", "10"));
MathP50.HuffmanDecoder decoder = MathP50.createDecoder(codes);

assertThrows(IllegalArgumentException.class, () -> decoder.decode("1"));
assertEquals("b", decoder.decode("10"));
}
}