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BAEL-2412 

Change name of a class.
Move class init code to tests.
Add solution to deserializing a boolean from an 2-value integer.
Change formatting for long sentences, mainly the serializers/deserializers.
This commit is contained in:
Javier 2018-12-06 10:13:20 +01:00
parent 4c0ce1d746
commit 19ed35aef4
2 changed files with 83 additions and 22 deletions
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18
gson/src/main/java/org/baeldung/gson/primitives/models/GsonBundle.java → gson/src/main/java/org/baeldung/gson/primitives/models/PrimitiveBundle.java
View File

@ -1,14 +1,14 @@
package org.baeldung.gson.primitives.models;
public class GsonBundle {
public byte byteValue = (byte) 0x00001111;
public short shortValue = (short) 3;
public int intValue = 3;
public long longValue = 3;
public float floatValue = 3.5f;
public double doubleValue = 3.5;
public boolean booleanValue = true;
public char charValue = 'a';
public class PrimitiveBundle {
public byte byteValue;
public short shortValue;
public int intValue;
public long longValue;
public float floatValue;
public double doubleValue;
public boolean booleanValue;
public char charValue;
public String toString() {
return "{" + "byte: " + byteValue + ", " + "short: " + shortValue + ", "

87
gson/src/test/java/org/baeldung/gson/primitives/UnitTest.java
View File

@ -10,28 +10,42 @@ import static junit.framework.TestCase.*;
public class UnitTest {
@Test public void toJsonAllPrimitives() {
GsonBundle gsonBundle = new GsonBundle();
PrimitiveBundle primitiveBundle = new PrimitiveBundle();
// @formatter:off
primitiveBundle.byteValue = (byte) 0x00001111;
primitiveBundle.shortValue = (short) 3;
primitiveBundle.intValue = 3;
primitiveBundle.longValue = 3;
primitiveBundle.floatValue = 3.5f;
primitiveBundle.doubleValue = 3.5;
primitiveBundle.booleanValue = true;
primitiveBundle.charValue = 'a';
// @formatter:on
Gson gson = new Gson();
String expected = "{\"byteValue\":17,\"shortValue\":3,\"intValue\":3," + "\"longValue\":3,\"floatValue\":3.5" + ",\"doubleValue\":3.5" + ",\"booleanValue\":true,\"charValue\":\"a\"}";
assertEquals(expected, gson.toJson(gsonBundle));
assertEquals(expected, gson.toJson(primitiveBundle));
}
@Test public void fromJsonAllPrimitives() {
String json = "{\"byteValue\": 17, \"shortValue\": 3, \"intValue\": 3, " + "\"longValue\": 3, \"floatValue\": 3.5" + ", \"doubleValue\": 3.5" + ", \"booleanValue\": true, \"charValue\": \"a\"}";
Gson gson = new Gson();
GsonBundle model = gson.fromJson(json, GsonBundle.class);
PrimitiveBundle model = gson.fromJson(json, PrimitiveBundle.class);
assertEquals(17, model.byteValue);
assertEquals(3, model.shortValue);
assertEquals(3, model.intValue);
assertEquals(3, model.longValue);
// @formatter:off
assertEquals(17, model.byteValue);
assertEquals(3, model.shortValue);
assertEquals(3, model.intValue);
assertEquals(3, model.longValue);
assertEquals(3.5, model.floatValue, 0.0001);
assertEquals(3.5, model.doubleValue, 0.0001);
assertTrue(model.booleanValue);
assertTrue( model.booleanValue);
assertEquals('a', model.charValue);
// @formatter:on
}
@Test public void toJsonByteToBitString() {
@ -143,7 +157,19 @@ public class UnitTest {
fail();
}
@Test public void fromJsonBooleanfromYes() {
@Test public void fromJsonBooleanFrom2ValueIntegerSolution() {
String json = "{\"value\": 1}";
GsonBuilder builder = new GsonBuilder();
builder.registerTypeAdapter(GsonBoolean.class, new GsonBoolean2ValueIntegerDeserializer());
Gson gson = builder.create();
GsonBoolean model = gson.fromJson(json, GsonBoolean.class);
assertTrue(model.value);
}
@Test public void fromJsonBooleanFromYes() {
String json = "{\"value\": yes}";
Gson gson = new Gson();
@ -162,19 +188,54 @@ public class UnitTest {
assertFalse(model.value);
}
// @formatter:off
static class GsonBitStringDeserializer implements JsonDeserializer<GsonBitString> {
@Override public GsonBitString deserialize(JsonElement jsonElement, Type type, JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
@Override public GsonBitString deserialize(
JsonElement jsonElement,
Type type,
JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
GsonBitString gsonBitString = new GsonBitString();
gsonBitString.value = (byte) Integer.parseInt(jsonElement.getAsJsonObject().getAsJsonPrimitive("value").getAsString(), 2);
gsonBitString.value = (byte) Integer.parseInt(
jsonElement.getAsJsonObject()
.getAsJsonPrimitive("value")
.getAsString()
, 2);
return gsonBitString;
}
}
static class GsonBitStringSerializer implements JsonSerializer<GsonBitString> {
@Override public JsonElement serialize(GsonBitString gsonBundle, Type type, JsonSerializationContext jsonSerializationContext) {
@Override public JsonElement serialize(
GsonBitString model,
Type type,
JsonSerializationContext jsonSerializationContext) {
JsonObject jsonObject = new JsonObject();
jsonObject.addProperty("value", Integer.toBinaryString(gsonBundle.value));
jsonObject.addProperty("value", Integer.toBinaryString(model.value));
return jsonObject;
}
}
static class GsonBoolean2ValueIntegerDeserializer implements JsonDeserializer<GsonBoolean> {
@Override public GsonBoolean deserialize(
JsonElement jsonElement,
Type type,
JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
GsonBoolean model = new GsonBoolean();
int value = jsonElement.getAsJsonObject().getAsJsonPrimitive("value").getAsInt();
if (value == 0) {
model.value = false;
} else if (value == 1) {
model.value = true;
} else {
throw new JsonParseException("Unexpected value. Trying to deserialize "
+ "a boolean from an integer different than 0 and 1.");
}
return model;
}
}
// @formatter:on
}