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Add parsing related unit tests for JSONArray
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‎core/test/processing/data/JSONArrayTest.java‎

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package processing.data;
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import org.junit.Test;
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import java.io.ByteArrayOutputStream;
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import java.io.PrintWriter;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertThrows;
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public class JSONArrayTest {
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@Test
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public void testDefaultConstructor() {
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JSONArray jsonArray = new JSONArray();
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assertEquals(0, jsonArray.size());
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}
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@Test
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public void testEmptyTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[]"));
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assertEquals(0, jsonArray.size());
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}
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@Test
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public void testNullTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[null]"));
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assertEquals(1, jsonArray.size());
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assertEquals(JSONObject.NULL, jsonArray.get(0));
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}
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@Test
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public void testIntTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[1]"));
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assertEquals(1, jsonArray.size());
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assertEquals(1, jsonArray.get(0));
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}
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@Test
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public void testDoubleTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[0.1]"));
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assertEquals(1, jsonArray.size());
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assertEquals(0.1, jsonArray.get(0));
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}
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@Test
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public void testStringTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[\"a\"]"));
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assertEquals(1, jsonArray.size());
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assertEquals("a", jsonArray.get(0));
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}
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@Test
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public void testArrayTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[[1]]"));
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assertEquals(1, jsonArray.size());
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assertEquals(JSONArray.class, jsonArray.get(0).getClass());
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JSONArray innerJsonArray = ((JSONArray) jsonArray.get(0));
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assertEquals(1, innerJsonArray.size());
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assertEquals(1, innerJsonArray.get(0));
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}
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@Test
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public void testObjectTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[{\"a\":\"b\"}]"));
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assertEquals(1, jsonArray.size());
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assertEquals(JSONObject.class, jsonArray.get(0).getClass());
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JSONObject innerJsonObject = ((JSONObject) jsonArray.get(0));
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assertEquals(1, innerJsonObject.size());
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assertEquals("b", innerJsonObject.get("a"));
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}
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@Test
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public void testMixedTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[null, 1, 2147483648, 0.1, \"a\", [1], {\"a\": \"b\"}]"));
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assertEquals(7, jsonArray.size());
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assertEquals(JSONObject.NULL, jsonArray.get(0));
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assertEquals(1, jsonArray.get(1));
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assertEquals(2147483648L, jsonArray.get(2));
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assertEquals(0.1, jsonArray.get(3));
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assertEquals("a", jsonArray.get(4));
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assertEquals(JSONArray.class, jsonArray.get(5).getClass());
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JSONArray innerJsonArray = (JSONArray) jsonArray.get(5);
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assertEquals(1, innerJsonArray.size());
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assertEquals(1, innerJsonArray.get(0));
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assertEquals(JSONObject.class, jsonArray.get(6).getClass());
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JSONObject innerJsonObject = (JSONObject) jsonArray.get(6);
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assertEquals(1, innerJsonObject.size());
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assertEquals("b", innerJsonObject.get("a"));
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}
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@Test
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public void testTrailingCommaTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[1, 2,]"));
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assertEquals(2, jsonArray.size());
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assertEquals(1, jsonArray.get(0));
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assertEquals(2, jsonArray.get(1));
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}
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@Test
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public void testWhitespaceTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener(" [ 1 , 2 , ] "));
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assertEquals(2, jsonArray.size());
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assertEquals(1, jsonArray.get(0));
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assertEquals(2, jsonArray.get(1));
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}
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@Test
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public void testNoSpacesTokenerConstructor() {
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JSONArray jsonArray = new JSONArray(new JSONTokener("[1,2]"));
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assertEquals(2, jsonArray.size());
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assertEquals(1, jsonArray.get(0));
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assertEquals(2, jsonArray.get(1));
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}
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@Test
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public void testNoStartTokenerConstructorThrowsException() {
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RuntimeException exception = assertThrows(RuntimeException.class, () -> new JSONArray(new JSONTokener("1, 2]")));
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assertEquals("A JSONArray text must start with '['", exception.getMessage());
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}
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@Test
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public void testNoEndTokenerConstructorThrowsException() {
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RuntimeException exception = assertThrows(RuntimeException.class, () -> new JSONArray(new JSONTokener("[1, 2")));
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assertEquals("Expected a ',' or ']'", exception.getMessage());
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}
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@Test
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public void testEmptyIntListConstructor() {
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JSONArray jsonArray = new JSONArray(new IntList(new int[]{}));
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assertEquals(0, jsonArray.size());
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}
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@Test
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public void testFilledIntListConstructor() {
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JSONArray jsonArray = new JSONArray(new IntList(new int[]{1, 2}));
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assertEquals(2, jsonArray.size());
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assertEquals(1, jsonArray.get(0));
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assertEquals(2, jsonArray.get(1));
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}
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@Test
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public void testEmptyFloatListConstructor() {
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JSONArray jsonArray = new JSONArray(new FloatList(new float[]{}));
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assertEquals(0, jsonArray.size());
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}
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@Test
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public void testFilledFloatListConstructor() {
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JSONArray jsonArray = new JSONArray(new FloatList(new float[]{0.1f, 0.2f}));
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assertEquals(2, jsonArray.size());
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assertEquals(0.1f, jsonArray.get(0));
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assertEquals(0.2f, jsonArray.get(1));
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}
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@Test
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public void testEmptyStringListConstructor() {
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JSONArray jsonArray = new JSONArray(new StringList(new String[]{}));
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assertEquals(0, jsonArray.size());
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}
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@Test
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public void testFilledStringListConstructor() {
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JSONArray jsonArray = new JSONArray(new StringList(new String[]{"a", "b"}));
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assertEquals(2, jsonArray.size());
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assertEquals("a", jsonArray.get(0));
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assertEquals("b", jsonArray.get(1));
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}
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@Test
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public void testEmptyArrayConstructor() {
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JSONArray jsonArray = new JSONArray(new int[]{});
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assertEquals(0, jsonArray.size());
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}
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@Test
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public void testFilledArrayConstructor() {
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JSONArray jsonArray = new JSONArray(new int[]{1, 2});
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assertEquals(2, jsonArray.size());
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assertEquals(1, jsonArray.get(0));
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assertEquals(2, jsonArray.get(1));
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}
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@Test
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public void testNullFormat() {
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String json = """
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[
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null,
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null
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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String output = jsonArray.format(0);
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assertEquals(json, output);
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}
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@Test
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public void testIntFormat() {
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String json = """
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[
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1,
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2
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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String output = jsonArray.format(0);
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assertEquals(json, output);
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}
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@Test
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public void testLongFormat() {
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String json = """
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[
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2147483648,
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2147483649
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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String output = jsonArray.format(0);
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assertEquals(json, output);
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}
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@Test
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public void testDoubleFormat() {
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String json = """
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[
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0.1,
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0.2
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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String output = jsonArray.format(0);
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assertEquals(json, output);
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}
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@Test
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public void testJSONArrayFormat() {
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String json = """
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[
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[],
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[
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1,
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2
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]
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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String output = jsonArray.format(0);
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assertEquals(json, output);
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}
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@Test
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public void testJSONObjectFormat() {
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String json = """
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[
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null,
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1,
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2147483648,
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0.1,
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[
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1,
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2
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],
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{
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"a":"b",
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"c":"d"
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}
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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String output = jsonArray.format(0);
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assertEquals(json, output);
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}
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@Test
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public void testMixedFormat() {
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String json = """
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[
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null,
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1,
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2147483648,
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0.1,
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[
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1,
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2
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],
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{
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"a":"b",
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"c":"d"
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}
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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String output = jsonArray.format(0);
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assertEquals(json, output);
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}
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@Test
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public void testIndentFormat() {
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String json = """
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[
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1,
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2,
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[
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1,
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2
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]
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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String output = jsonArray.format(4);
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assertEquals(json, output);
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}
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@Test
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public void testNegativeIndentFormat() {
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String json = "[1,2,[1,2]]";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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String output = jsonArray.format(-1);
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assertEquals(json, output);
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}
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@Test
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public void testIndentWrite() {
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String json = """
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[
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1,
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2,
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[
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1,
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2
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]
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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jsonArray.write(new PrintWriter(byteArrayOutputStream));
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assertEquals(json, byteArrayOutputStream.toString());
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}
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@Test
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public void testIndentOptionsWrite() {
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String json = """
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[
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1,
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2,
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[
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1,
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2
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]
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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jsonArray.write(new PrintWriter(byteArrayOutputStream), "indent=4");
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assertEquals(json, byteArrayOutputStream.toString());
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}
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@Test
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public void testCompactOptionsWrite() {
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String json = "[1,2,[1,2]]";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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jsonArray.write(new PrintWriter(byteArrayOutputStream), "compact");
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assertEquals(json, byteArrayOutputStream.toString());
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}
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@Test
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public void testMultiOptionsWrite() {
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String json = """
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[
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1,
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2,
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[
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1,
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2
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]
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]""";
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JSONArray jsonArray = new JSONArray(new JSONTokener(json));
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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jsonArray.write(new PrintWriter(byteArrayOutputStream), "indent=2,indent=4");
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assertEquals(json, byteArrayOutputStream.toString());
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}
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}

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