1 files changed, 312 insertions, 0 deletions
diff --git a/gson/src/test/java/com/google/gson/internal/bind/JsonElementReaderTest.java b/gson/src/test/java/com/google/gson/internal/bind/JsonElementReaderTest.java
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+++ b/gson/src/test/java/com/google/gson/internal/bind/JsonElementReaderTest.java
@@ -0,0 +1,312 @@
+/*
+ * Copyright (C) 2011 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.internal.bind;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParser;
+import com.google.gson.stream.JsonToken;
+import java.io.IOException;
+import junit.framework.TestCase;
+
+@SuppressWarnings("resource")
+public final class JsonElementReaderTest extends TestCase {
+
+  public void testNumbers() throws IOException {
+    JsonElement element = new JsonParser().parse("[1, 2, 3]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    assertEquals(1, reader.nextInt());
+    assertEquals(2L, reader.nextLong());
+    assertEquals(3.0, reader.nextDouble());
+    reader.endArray();
+  }
+
+  public void testLenientNansAndInfinities() throws IOException {
+    JsonElement element = new JsonParser().parse("[NaN, -Infinity, Infinity]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.setLenient(true);
+    reader.beginArray();
+    assertTrue(Double.isNaN(reader.nextDouble()));
+    assertEquals(Double.NEGATIVE_INFINITY, reader.nextDouble());
+    assertEquals(Double.POSITIVE_INFINITY, reader.nextDouble());
+    reader.endArray();
+  }
+
+  public void testStrictNansAndInfinities() throws IOException {
+    JsonElement element = new JsonParser().parse("[NaN, -Infinity, Infinity]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.setLenient(false);
+    reader.beginArray();
+    try {
+      reader.nextDouble();
+      fail();
+    } catch (NumberFormatException e) {
+    }
+    assertEquals("NaN", reader.nextString());
+    try {
+      reader.nextDouble();
+      fail();
+    } catch (NumberFormatException e) {
+    }
+    assertEquals("-Infinity", reader.nextString());
+    try {
+      reader.nextDouble();
+      fail();
+    } catch (NumberFormatException e) {
+    }
+    assertEquals("Infinity", reader.nextString());
+    reader.endArray();
+  }
+
+  public void testNumbersFromStrings() throws IOException {
+    JsonElement element = new JsonParser().parse("[\"1\", \"2\", \"3\"]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    assertEquals(1, reader.nextInt());
+    assertEquals(2L, reader.nextLong());
+    assertEquals(3.0, reader.nextDouble());
+    reader.endArray();
+  }
+
+  public void testStringsFromNumbers() throws IOException {
+    JsonElement element = new JsonParser().parse("[1]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    assertEquals("1", reader.nextString());
+    reader.endArray();
+  }
+
+  public void testBooleans() throws IOException {
+    JsonElement element = new JsonParser().parse("[true, false]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    assertEquals(true, reader.nextBoolean());
+    assertEquals(false, reader.nextBoolean());
+    reader.endArray();
+  }
+
+  public void testNulls() throws IOException {
+    JsonElement element = new JsonParser().parse("[null,null]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    reader.nextNull();
+    reader.nextNull();
+    reader.endArray();
+  }
+
+  public void testStrings() throws IOException {
+    JsonElement element = new JsonParser().parse("[\"A\",\"B\"]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    assertEquals("A", reader.nextString());
+    assertEquals("B", reader.nextString());
+    reader.endArray();
+  }
+
+  public void testArray() throws IOException {
+    JsonElement element = new JsonParser().parse("[1, 2, 3]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    assertEquals(JsonToken.BEGIN_ARRAY, reader.peek());
+    reader.beginArray();
+    assertEquals(JsonToken.NUMBER, reader.peek());
+    assertEquals(1, reader.nextInt());
+    assertEquals(JsonToken.NUMBER, reader.peek());
+    assertEquals(2, reader.nextInt());
+    assertEquals(JsonToken.NUMBER, reader.peek());
+    assertEquals(3, reader.nextInt());
+    assertEquals(JsonToken.END_ARRAY, reader.peek());
+    reader.endArray();
+    assertEquals(JsonToken.END_DOCUMENT, reader.peek());
+  }
+
+  public void testObject() throws IOException {
+    JsonElement element = new JsonParser().parse("{\"A\": 1, \"B\": 2}");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    assertEquals(JsonToken.BEGIN_OBJECT, reader.peek());
+    reader.beginObject();
+    assertEquals(JsonToken.NAME, reader.peek());
+    assertEquals("A", reader.nextName());
+    assertEquals(JsonToken.NUMBER, reader.peek());
+    assertEquals(1, reader.nextInt());
+    assertEquals(JsonToken.NAME, reader.peek());
+    assertEquals("B", reader.nextName());
+    assertEquals(JsonToken.NUMBER, reader.peek());
+    assertEquals(2, reader.nextInt());
+    assertEquals(JsonToken.END_OBJECT, reader.peek());
+    reader.endObject();
+    assertEquals(JsonToken.END_DOCUMENT, reader.peek());
+  }
+
+  public void testEmptyArray() throws IOException {
+    JsonElement element = new JsonParser().parse("[]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    reader.endArray();
+  }
+
+  public void testNestedArrays() throws IOException {
+    JsonElement element = new JsonParser().parse("[[],[[]]]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    reader.beginArray();
+    reader.endArray();
+    reader.beginArray();
+    reader.beginArray();
+    reader.endArray();
+    reader.endArray();
+    reader.endArray();
+  }
+
+  public void testNestedObjects() throws IOException {
+    JsonElement element = new JsonParser().parse("{\"A\":{},\"B\":{\"C\":{}}}");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginObject();
+    assertEquals("A", reader.nextName());
+    reader.beginObject();
+    reader.endObject();
+    assertEquals("B", reader.nextName());
+    reader.beginObject();
+    assertEquals("C", reader.nextName());
+    reader.beginObject();
+    reader.endObject();
+    reader.endObject();
+    reader.endObject();
+  }
+
+  public void testEmptyObject() throws IOException {
+    JsonElement element = new JsonParser().parse("{}");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginObject();
+    reader.endObject();
+  }
+
+  public void testSkipValue() throws IOException {
+    JsonElement element = new JsonParser().parse("[\"A\",{\"B\":[[]]},\"C\",[[]],\"D\",null]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    assertEquals("A", reader.nextString());
+    reader.skipValue();
+    assertEquals("C", reader.nextString());
+    reader.skipValue();
+    assertEquals("D", reader.nextString());
+    reader.skipValue();
+    reader.endArray();
+  }
+
+  public void testWrongType() throws IOException {
+    JsonElement element = new JsonParser().parse("[[],\"A\"]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    try {
+      reader.nextBoolean();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.nextNull();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.nextString();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.nextInt();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.nextLong();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.nextDouble();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.nextName();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.beginObject();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.endArray();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.endObject();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    reader.beginArray();
+    reader.endArray();
+
+    try {
+      reader.nextBoolean();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.nextNull();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    try {
+      reader.nextInt();
+      fail();
+    } catch (NumberFormatException expected) {
+    }
+    try {
+      reader.nextLong();
+      fail();
+    } catch (NumberFormatException expected) {
+    }
+    try {
+      reader.nextDouble();
+      fail();
+    } catch (NumberFormatException expected) {
+    }
+    try {
+      reader.nextName();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+    assertEquals("A", reader.nextString());
+    reader.endArray();
+  }
+
+  public void testEarlyClose() throws IOException {
+    JsonElement element = new JsonParser().parse("[1, 2, 3]");
+    JsonTreeReader reader = new JsonTreeReader(element);
+    reader.beginArray();
+    reader.close();
+    try {
+      reader.peek();
+      fail();
+    } catch (IllegalStateException expected) {
+    }
+  }
+}