Test #5: Test unespaced control flow characters in strict mode

gson/src/test/java/com/google/gson/stream/JsonReaderTest.java

@@ -33,6 +33,8 @@
 import java.io.Reader;
 import java.io.StringReader;
 import java.util.Arrays;
+
+import org.checkerframework.common.value.qual.StaticallyExecutable;
 import org.junit.Ignore;
 import org.junit.Test;
 
@@ -100,6 +102,19 @@ public void testSkipArray() throws IOException {
     assertThat(reader.peek()).isEqualTo(JsonToken.END_DOCUMENT);
   }
 
+  @Test
+  public void testStrictModeFailsToParseUnespacedControlCharacter() {
+    String json = "\"\t\"";
+    JsonReader reader = new JsonReader(reader(json));
+    reader.setStrict(true);
+    try {
+      reader.nextString();
+      fail();
+    } catch (IOException e) {
+      assertThat(e.getMessage()).contains("strict");
+    }
+  }
+
   @Test
   public void testSkipArrayAfterPeek() throws Exception {
     JsonReader reader = new JsonReader(reader(