create unit tests for various number formats

src/test/java/org/json/junit/JSONObjectNumberTest.java

@@ -0,0 +1,126 @@
+package org.json.junit;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+import java.util.Arrays;
+import java.util.Collection;
+
+import org.json.JSONObject;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+import org.junit.runners.Parameterized.Parameters;
+
+@RunWith(value = Parameterized.class)
+public class JSONObjectNumberTest {
+    private final String objectString;
+    private Integer value = 50;
+
+    @Parameters(name = "{index}: {0}")
+    public static Collection<Object[]> data() {
+        return Arrays.asList(new Object[][]{
+            {"{value:50}", 1},
+            {"{value:50.0}", 1},
+            {"{value:5e1}", 1},
+            {"{value:5E1}", 1},
+            {"{value:5e1}", 1},
+            {"{value:'50'}", 1},
+            {"{value:-50}", -1},
+            {"{value:-50.0}", -1},
+            {"{value:-5e1}", -1},
+            {"{value:-5E1}", -1},
+            {"{value:-5e1}", -1},
+            {"{value:'-50'}", -1}
+            // JSON does not support octal or hex numbers;
+            // see https://stackoverflow.com/a/52671839/6323312
+            // "{value:062}", // octal 50
+            // "{value:0x32}" // hex 50
+        });
+    }
+
+    public JSONObjectNumberTest(String objectString, int resultIsNegative) {
+        this.objectString = objectString;
+        this.value *= resultIsNegative;
+    }
+
+    private JSONObject object;
+
+    @Before
+    public void setJsonObject() {
+        object = new JSONObject(objectString);
+    }
+
+    @Test
+    public void testGetNumber() {
+        assertEquals(value.intValue(), object.getNumber("value").intValue());
+    }
+
+    @Test
+    public void testGetBigDecimal() {
+        assertTrue(BigDecimal.valueOf(value).compareTo(object.getBigDecimal("value")) == 0);
+    }
+
+    @Test
+    public void testGetBigInteger() {
+        assertEquals(BigInteger.valueOf(value), object.getBigInteger("value"));
+    }
+
+    @Test
+    public void testGetFloat() {
+        assertEquals(value.floatValue(), object.getFloat("value"), 0.0f);
+    }
+
+    @Test
+    public void testGetDouble() {
+        assertEquals(value.doubleValue(), object.getDouble("value"), 0.0d);
+    }
+
+    @Test
+    public void testGetInt() {
+        assertEquals(value.intValue(), object.getInt("value"));
+    }
+
+    @Test
+    public void testGetLong() {
+        assertEquals(value.longValue(), object.getLong("value"));
+    }
+
+    @Test
+    public void testOptNumber() {
+        assertEquals(value.intValue(), object.optNumber("value").intValue());
+    }
+
+    @Test
+    public void testOptBigDecimal() {
+        assertTrue(BigDecimal.valueOf(value).compareTo(object.optBigDecimal("value", null)) == 0);
+    }
+
+    @Test
+    public void testOptBigInteger() {
+        assertEquals(BigInteger.valueOf(value), object.optBigInteger("value", null));
+    }
+
+    @Test
+    public void testOptFloat() {
+        assertEquals(value.floatValue(), object.optFloat("value"), 0.0f);
+    }
+
+    @Test
+    public void testOptDouble() {
+        assertEquals(value.doubleValue(), object.optDouble("value"), 0.0d);
+    }
+
+    @Test
+    public void testOptInt() {
+        assertEquals(value.intValue(), object.optInt("value"));
+    }
+
+    @Test
+    public void testOptLong() {
+        assertEquals(value.longValue(), object.optLong("value"));
+    }
+}