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test: improve coverage for Strings utility class #282

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Merged
RoiSoleil merged 1 commit into from
May 18, 2026
Merged

test: improve coverage for Strings utility class #282

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26 changes: 26 additions & 0 deletions org.moreunit.core.test/test/org/moreunit/core/util/StringsTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -83,6 +83,16 @@ public void should_count_occurrences() throws Exception
assertThat(Strings.countOccurrences("bla<>h<>", "<>")).isEqualTo(2);
}

@Test
public void should_return_zero_when_count_occurrences_is_called_with_empty_strings() throws Exception
{
assertThat(Strings.countOccurrences("", "test")).isEqualTo(0);
assertThat(Strings.countOccurrences(null, "test")).isEqualTo(0);
assertThat(Strings.countOccurrences("test", "")).isEqualTo(0);
assertThat(Strings.countOccurrences("test", null)).isEqualTo(0);
assertThat(Strings.countOccurrences(null, null)).isEqualTo(0);
}

@Test
public void split_should_ignore_blank_parts() throws Exception
{
Expand Down Expand Up @@ -128,6 +138,22 @@ public void join_should_join_given_strings_whith_given_separator() throws Except
assertThat(Strings.join(" -> ", "aBc", "2", "DEf")).isEqualTo("aBc -> 2 -> DEf");
}

@Test
public void join_should_append_to_string_builder_with_given_separator_for_collection() throws Exception
{
StringBuilder sb = new StringBuilder("prefix: ");
Strings.join(sb, ",", java.util.Arrays.asList("1", "2", "3"));
assertThat(sb.toString()).isEqualTo("prefix: 1,2,3");
}

@Test
public void join_should_append_to_string_builder_with_given_separator_for_array() throws Exception
{
StringBuilder sb = new StringBuilder("prefix: ");
Strings.join(sb, " -> ", new String[]{"aBc", "2", "DEf"});
assertThat(sb.toString()).isEqualTo("prefix: aBc -> 2 -> DEf");
}

@Test
public void emptyArray_should_return_empty_array()
{
Expand Down
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