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LongInterval does not catch NumberFormatException #2

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LongInterval does not catch NumberFormatException #2

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10 changes: 7 additions & 3 deletions src/main/java/com/greplin/interval/LongInterval.java
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Expand Up @@ -105,9 +105,13 @@ public boolean intersects(final LongInterval other) {
public static LongInterval valueOf(final String value) {
String trimmed = value.trim();
int middle = trimmed.indexOf('-', 1);
long start = Long.parseLong(trimmed.substring(0, middle).trim());
long end = Long.parseLong(trimmed.substring(middle + 1).trim());
return new LongInterval(start, end);
try {
long start = Long.parseLong(trimmed.substring(0, middle).trim());
long end = Long.parseLong(trimmed.substring(middle + 1).trim());
return new LongInterval(start, end);
} catch(NumberFormatException e) {
throw new NumberFormatException("Passed value does not contain two parsable long values");
}
}


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5 changes: 5 additions & 0 deletions src/test/java/com/greplin/interval/LongIntervalTest.java
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Expand Up @@ -21,6 +21,11 @@ public void testNegativeNumbers() throws Exception {
assertParse("-2--1", -2, -1);
}

@Test(expected=NumberFormatException.class)
public void testEmptyNumbers() throws Exception {
LongInterval result = LongInterval.valueOf("null-null");
}

@Test
public void testEquals() throws Exception {
Assert.assertEquals(new LongInterval(1, 100), new LongInterval(1, 100));
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