Merge branch 'alexeyk/test-base-arm64-fixes' into alexeyk/test-base-windows

# Conflicts:
#	communication/src/test/java/datadog/communication/serialization/msgpack/MsgPackWriterTest.java
#	components/json/src/test/java/datadog/json/JsonReaderTest.java
#	dd-java-agent/agent-crashtracking/src/test/java/datadog/crashtracking/buildid/BuildIdExtractorIntegrationTest.java

Author: AlexeyKuznetsov-DD

communication/src/test/java/datadog/communication/serialization/msgpack/MsgPackWriterTest.java

@@ -33,7 +33,7 @@
 import org.msgpack.core.MessageUnpacker;
 
 public class MsgPackWriterTest {
-  // Explicit escapes for non-ASCII test data so it is independent of container settings.
+  // Explicit escapes for non-ASCII chars to make test independent of container settings.
   private static final String NON_ASCII_STRING = "foob\u00E1r_\u263a"; // foobár_☺
   private static final byte[] NON_ASCII_BYTES = NON_ASCII_STRING.getBytes(UTF_8);
   private static final int NON_ASCII_BUFFER_CAPACITY = NON_ASCII_BYTES.length + 1;
@@ -666,7 +666,7 @@ public String toString() {
                   }
                 }));
     writer.writeObjectString(value, null);
-    writer.writeObjectString(value, s -> "foobàr".getBytes(UTF_8));
+    writer.writeObjectString(value, s -> NON_ASCII_BYTES);
   }
 
   @Test

components/json/src/test/java/datadog/json/JsonReaderTest.java

@@ -215,6 +215,7 @@ void testStringEscaping() {
       assertEquals("\n", reader.nextString());
       assertEquals("\r", reader.nextString());
       assertEquals("\t", reader.nextString());
+      // Explicit escape for non-ASCII `É` to make test independent of container settings.
       assertEquals("\u00C9", reader.nextString());
       reader.endArray();
     } catch (IOException e) {

dd-java-agent/agent-crashtracking/src/test/java/datadog/crashtracking/buildid/BuildIdExtractorIntegrationTest.java

@@ -137,9 +137,8 @@ private static Stream<Arguments> elfBinaries() {
   @ParameterizedTest(name = "ELF: {1}")
   @MethodSource("elfBinaries")
   void testElfBuildIdExtraction(String containerPath, String description) throws Exception {
-    assumeFalse(
-        OperatingSystem.architecture() == ARM64,
-        "ELF test uses x86_64 container library paths and is not portable to arm64");
+    // TODO: check if arm64 can be supported too.
+    assumeFalse(OperatingSystem.architecture() == ARM64, "Skipping for arm64");
     Path localBinary = copyFromContainer(linuxContainer, containerPath);
 
     ElfBuildIdExtractor extractor = new ElfBuildIdExtractor();