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cbor/src/test/java/com/fasterxml/jackson/dataformat/cbor/GeneratorDeepNestingTest.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| package com.fasterxml.jackson.dataformat.cbor; | ||
|
|
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| import java.io.ByteArrayOutputStream; | ||
| import java.util.*; | ||
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| import com.fasterxml.jackson.core.JsonGenerator; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
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| public class GeneratorDeepNestingTest extends CBORTestBase | ||
| { | ||
| /* | ||
| /********************************************************** | ||
| /* Test methods | ||
| /********************************************************** | ||
| */ | ||
|
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| final ObjectMapper MAPPER = cborMapper(); | ||
|
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| // for [dataformats-binary#62] | ||
| @SuppressWarnings("unchecked") | ||
| public void testDeeplyNestedMap() throws Exception | ||
| { | ||
| ByteArrayOutputStream out = new ByteArrayOutputStream(); | ||
| JsonGenerator gen = MAPPER.getFactory().createGenerator(out); | ||
| _writeNestedMap(gen, 23); | ||
| gen.close(); | ||
| byte[] encoded = out.toByteArray(); | ||
| Map<String,Object> result = (Map<String,Object>) MAPPER.readValue(encoded, Map.class); | ||
| _verifyNestedMap(result, 23); | ||
| } | ||
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| private void _writeNestedMap(JsonGenerator gen, int levelsLeft) throws Exception | ||
| { | ||
| if (levelsLeft == 0) { | ||
| gen.writeStartObject(); | ||
| gen.writeEndObject(); | ||
| return; | ||
| } | ||
|
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| // exercise different kinds of write methods... | ||
| switch (levelsLeft % 3) { | ||
| case 0: | ||
| gen.writeStartObject(); | ||
| break; | ||
| case 1: | ||
| gen.writeStartObject(1); | ||
| break; | ||
| default: | ||
| gen.writeStartObject(gen); // bogus "current" object | ||
| break; | ||
| } | ||
| gen.writeFieldName("level"+levelsLeft); | ||
| _writeNestedMap(gen, levelsLeft-1); | ||
| gen.writeEndObject(); | ||
| } | ||
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| @SuppressWarnings("unchecked") | ||
| private void _verifyNestedMap(Map<String,?> map, int level) { | ||
| if (level == 0) { | ||
| assertEquals(0, map.size()); | ||
| } else { | ||
| assertEquals(1, map.size()); | ||
| assertEquals("level"+level, map.keySet().iterator().next()); | ||
| _verifyNestedMap((Map<String,?>) map.values().iterator().next(), level-1); | ||
| } | ||
| } | ||
|
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| public void testDeeplyNestedArray() throws Exception | ||
| { | ||
| ByteArrayOutputStream out = new ByteArrayOutputStream(); | ||
| JsonGenerator gen = MAPPER.getFactory().createGenerator(out); | ||
| _writeNestedArray(gen, 23); | ||
| gen.close(); | ||
| byte[] encoded = out.toByteArray(); | ||
| List<?> result = (List<?>) MAPPER.readValue(encoded, List.class); | ||
| _verifyNesteArray(result, 23); | ||
| } | ||
|
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| private void _writeNestedArray(JsonGenerator gen, int levelsLeft) throws Exception | ||
| { | ||
| if (levelsLeft == 0) { | ||
| gen.writeStartArray(); | ||
| gen.writeEndArray(); | ||
| return; | ||
| } | ||
| // exercise different kinds of write methods... | ||
| switch (levelsLeft % 2) { | ||
| case 0: | ||
| gen.writeStartArray(); | ||
| break; | ||
| default: | ||
| gen.writeStartArray(2); | ||
| break; | ||
| } | ||
| gen.writeNumber(levelsLeft); | ||
| _writeNestedArray(gen, levelsLeft-1); | ||
| gen.writeEndArray(); | ||
| } | ||
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| private void _verifyNesteArray(List<?> list, int level) { | ||
| if (level == 0) { | ||
| assertEquals(0, list.size()); | ||
| } else { | ||
| assertEquals(2,list.size()); | ||
| assertEquals(Integer.valueOf(level), list.get(0)); | ||
| _verifyNesteArray((List<?>) list.get(1), level-1); | ||
| } | ||
| } | ||
| } |
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