diff options
Diffstat (limited to 'gson/src/test/java/com/google/gson/stream/JsonWriterTest.java')
| -rw-r--r-- | gson/src/test/java/com/google/gson/stream/JsonWriterTest.java | 579 |
1 files changed, 579 insertions, 0 deletions
diff --git a/gson/src/test/java/com/google/gson/stream/JsonWriterTest.java b/gson/src/test/java/com/google/gson/stream/JsonWriterTest.java new file mode 100644 index 00000000..4cfd55a7 --- /dev/null +++ b/gson/src/test/java/com/google/gson/stream/JsonWriterTest.java @@ -0,0 +1,579 @@ +/* + * Copyright (C) 2010 Google Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.google.gson.stream; + +import java.io.IOException; +import java.io.StringWriter; +import java.math.BigDecimal; +import java.math.BigInteger; +import junit.framework.TestCase; + +@SuppressWarnings("resource") +public final class JsonWriterTest extends TestCase { + + public void testWrongTopLevelType() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + try { + jsonWriter.value("a"); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testTwoNames() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + jsonWriter.name("a"); + try { + jsonWriter.name("a"); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testNameWithoutValue() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + jsonWriter.name("a"); + try { + jsonWriter.endObject(); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testValueWithoutName() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + try { + jsonWriter.value(true); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testMultipleTopLevelValues() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray().endArray(); + try { + jsonWriter.beginArray(); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testBadNestingObject() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.beginObject(); + try { + jsonWriter.endArray(); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testBadNestingArray() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.beginArray(); + try { + jsonWriter.endObject(); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testNullName() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + try { + jsonWriter.name(null); + fail(); + } catch (NullPointerException expected) { + } + } + + public void testNullStringValue() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + jsonWriter.name("a"); + jsonWriter.value((String) null); + jsonWriter.endObject(); + assertEquals("{\"a\":null}", stringWriter.toString()); + } + + public void testJsonValue() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + jsonWriter.name("a"); + jsonWriter.jsonValue("{\"b\":true}"); + jsonWriter.name("c"); + jsonWriter.value(1); + jsonWriter.endObject(); + assertEquals("{\"a\":{\"b\":true},\"c\":1}", stringWriter.toString()); + } + + public void testNonFiniteDoubles() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + try { + jsonWriter.value(Double.NaN); + fail(); + } catch (IllegalArgumentException expected) { + } + try { + jsonWriter.value(Double.NEGATIVE_INFINITY); + fail(); + } catch (IllegalArgumentException expected) { + } + try { + jsonWriter.value(Double.POSITIVE_INFINITY); + fail(); + } catch (IllegalArgumentException expected) { + } + } + + public void testNonFiniteBoxedDoubles() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + try { + jsonWriter.value(new Double(Double.NaN)); + fail(); + } catch (IllegalArgumentException expected) { + } + try { + jsonWriter.value(new Double(Double.NEGATIVE_INFINITY)); + fail(); + } catch (IllegalArgumentException expected) { + } + try { + jsonWriter.value(new Double(Double.POSITIVE_INFINITY)); + fail(); + } catch (IllegalArgumentException expected) { + } + } + + public void testDoubles() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.value(-0.0); + jsonWriter.value(1.0); + jsonWriter.value(Double.MAX_VALUE); + jsonWriter.value(Double.MIN_VALUE); + jsonWriter.value(0.0); + jsonWriter.value(-0.5); + jsonWriter.value(2.2250738585072014E-308); + jsonWriter.value(Math.PI); + jsonWriter.value(Math.E); + jsonWriter.endArray(); + jsonWriter.close(); + assertEquals("[-0.0," + + "1.0," + + "1.7976931348623157E308," + + "4.9E-324," + + "0.0," + + "-0.5," + + "2.2250738585072014E-308," + + "3.141592653589793," + + "2.718281828459045]", stringWriter.toString()); + } + + public void testLongs() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.value(0); + jsonWriter.value(1); + jsonWriter.value(-1); + jsonWriter.value(Long.MIN_VALUE); + jsonWriter.value(Long.MAX_VALUE); + jsonWriter.endArray(); + jsonWriter.close(); + assertEquals("[0," + + "1," + + "-1," + + "-9223372036854775808," + + "9223372036854775807]", stringWriter.toString()); + } + + public void testNumbers() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.value(new BigInteger("0")); + jsonWriter.value(new BigInteger("9223372036854775808")); + jsonWriter.value(new BigInteger("-9223372036854775809")); + jsonWriter.value(new BigDecimal("3.141592653589793238462643383")); + jsonWriter.endArray(); + jsonWriter.close(); + assertEquals("[0," + + "9223372036854775808," + + "-9223372036854775809," + + "3.141592653589793238462643383]", stringWriter.toString()); + } + + public void testBooleans() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.value(true); + jsonWriter.value(false); + jsonWriter.endArray(); + assertEquals("[true,false]", stringWriter.toString()); + } + + public void testNulls() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.nullValue(); + jsonWriter.endArray(); + assertEquals("[null]", stringWriter.toString()); + } + + public void testStrings() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.value("a"); + jsonWriter.value("a\""); + jsonWriter.value("\""); + jsonWriter.value(":"); + jsonWriter.value(","); + jsonWriter.value("\b"); + jsonWriter.value("\f"); + jsonWriter.value("\n"); + jsonWriter.value("\r"); + jsonWriter.value("\t"); + jsonWriter.value(" "); + jsonWriter.value("\\"); + jsonWriter.value("{"); + jsonWriter.value("}"); + jsonWriter.value("["); + jsonWriter.value("]"); + jsonWriter.value("\0"); + jsonWriter.value("\u0019"); + jsonWriter.endArray(); + assertEquals("[\"a\"," + + "\"a\\\"\"," + + "\"\\\"\"," + + "\":\"," + + "\",\"," + + "\"\\b\"," + + "\"\\f\"," + + "\"\\n\"," + + "\"\\r\"," + + "\"\\t\"," + + "\" \"," + + "\"\\\\\"," + + "\"{\"," + + "\"}\"," + + "\"[\"," + + "\"]\"," + + "\"\\u0000\"," + + "\"\\u0019\"]", stringWriter.toString()); + } + + public void testUnicodeLineBreaksEscaped() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.value("\u2028 \u2029"); + jsonWriter.endArray(); + assertEquals("[\"\\u2028 \\u2029\"]", stringWriter.toString()); + } + + public void testEmptyArray() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.endArray(); + assertEquals("[]", stringWriter.toString()); + } + + public void testEmptyObject() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + jsonWriter.endObject(); + assertEquals("{}", stringWriter.toString()); + } + + public void testObjectsInArrays() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginArray(); + jsonWriter.beginObject(); + jsonWriter.name("a").value(5); + jsonWriter.name("b").value(false); + jsonWriter.endObject(); + jsonWriter.beginObject(); + jsonWriter.name("c").value(6); + jsonWriter.name("d").value(true); + jsonWriter.endObject(); + jsonWriter.endArray(); + assertEquals("[{\"a\":5,\"b\":false}," + + "{\"c\":6,\"d\":true}]", stringWriter.toString()); + } + + public void testArraysInObjects() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + jsonWriter.name("a"); + jsonWriter.beginArray(); + jsonWriter.value(5); + jsonWriter.value(false); + jsonWriter.endArray(); + jsonWriter.name("b"); + jsonWriter.beginArray(); + jsonWriter.value(6); + jsonWriter.value(true); + jsonWriter.endArray(); + jsonWriter.endObject(); + assertEquals("{\"a\":[5,false]," + + "\"b\":[6,true]}", stringWriter.toString()); + } + + public void testDeepNestingArrays() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + for (int i = 0; i < 20; i++) { + jsonWriter.beginArray(); + } + for (int i = 0; i < 20; i++) { + jsonWriter.endArray(); + } + assertEquals("[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]", stringWriter.toString()); + } + + public void testDeepNestingObjects() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + for (int i = 0; i < 20; i++) { + jsonWriter.name("a"); + jsonWriter.beginObject(); + } + for (int i = 0; i < 20; i++) { + jsonWriter.endObject(); + } + jsonWriter.endObject(); + assertEquals("{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":" + + "{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{\"a\":{" + + "}}}}}}}}}}}}}}}}}}}}}", stringWriter.toString()); + } + + public void testRepeatedName() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.beginObject(); + jsonWriter.name("a").value(true); + jsonWriter.name("a").value(false); + jsonWriter.endObject(); + // JsonWriter doesn't attempt to detect duplicate names + assertEquals("{\"a\":true,\"a\":false}", stringWriter.toString()); + } + + public void testPrettyPrintObject() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.setIndent(" "); + + jsonWriter.beginObject(); + jsonWriter.name("a").value(true); + jsonWriter.name("b").value(false); + jsonWriter.name("c").value(5.0); + jsonWriter.name("e").nullValue(); + jsonWriter.name("f").beginArray(); + jsonWriter.value(6.0); + jsonWriter.value(7.0); + jsonWriter.endArray(); + jsonWriter.name("g").beginObject(); + jsonWriter.name("h").value(8.0); + jsonWriter.name("i").value(9.0); + jsonWriter.endObject(); + jsonWriter.endObject(); + + String expected = "{\n" + + " \"a\": true,\n" + + " \"b\": false,\n" + + " \"c\": 5.0,\n" + + " \"e\": null,\n" + + " \"f\": [\n" + + " 6.0,\n" + + " 7.0\n" + + " ],\n" + + " \"g\": {\n" + + " \"h\": 8.0,\n" + + " \"i\": 9.0\n" + + " }\n" + + "}"; + assertEquals(expected, stringWriter.toString()); + } + + public void testPrettyPrintArray() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter jsonWriter = new JsonWriter(stringWriter); + jsonWriter.setIndent(" "); + + jsonWriter.beginArray(); + jsonWriter.value(true); + jsonWriter.value(false); + jsonWriter.value(5.0); + jsonWriter.nullValue(); + jsonWriter.beginObject(); + jsonWriter.name("a").value(6.0); + jsonWriter.name("b").value(7.0); + jsonWriter.endObject(); + jsonWriter.beginArray(); + jsonWriter.value(8.0); + jsonWriter.value(9.0); + jsonWriter.endArray(); + jsonWriter.endArray(); + + String expected = "[\n" + + " true,\n" + + " false,\n" + + " 5.0,\n" + + " null,\n" + + " {\n" + + " \"a\": 6.0,\n" + + " \"b\": 7.0\n" + + " },\n" + + " [\n" + + " 8.0,\n" + + " 9.0\n" + + " ]\n" + + "]"; + assertEquals(expected, stringWriter.toString()); + } + + public void testLenientWriterPermitsMultipleTopLevelValues() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter writer = new JsonWriter(stringWriter); + writer.setLenient(true); + writer.beginArray(); + writer.endArray(); + writer.beginArray(); + writer.endArray(); + writer.close(); + assertEquals("[][]", stringWriter.toString()); + } + + public void testStrictWriterDoesNotPermitMultipleTopLevelValues() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter writer = new JsonWriter(stringWriter); + writer.beginArray(); + writer.endArray(); + try { + writer.beginArray(); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testClosedWriterThrowsOnStructure() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter writer = new JsonWriter(stringWriter); + writer.beginArray(); + writer.endArray(); + writer.close(); + try { + writer.beginArray(); + fail(); + } catch (IllegalStateException expected) { + } + try { + writer.endArray(); + fail(); + } catch (IllegalStateException expected) { + } + try { + writer.beginObject(); + fail(); + } catch (IllegalStateException expected) { + } + try { + writer.endObject(); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testClosedWriterThrowsOnName() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter writer = new JsonWriter(stringWriter); + writer.beginArray(); + writer.endArray(); + writer.close(); + try { + writer.name("a"); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testClosedWriterThrowsOnValue() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter writer = new JsonWriter(stringWriter); + writer.beginArray(); + writer.endArray(); + writer.close(); + try { + writer.value("a"); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testClosedWriterThrowsOnFlush() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter writer = new JsonWriter(stringWriter); + writer.beginArray(); + writer.endArray(); + writer.close(); + try { + writer.flush(); + fail(); + } catch (IllegalStateException expected) { + } + } + + public void testWriterCloseIsIdempotent() throws IOException { + StringWriter stringWriter = new StringWriter(); + JsonWriter writer = new JsonWriter(stringWriter); + writer.beginArray(); + writer.endArray(); + writer.close(); + writer.close(); + } +} |