[feat] Add unit tests

Author: kenssa4eedfd

hugegraph-loader/src/main/java/org/apache/hugegraph/loader/executor/LoadOptions.java

@@ -194,7 +194,7 @@ public final class LoadOptions implements Cloneable {
                              "The number of parallel read pipelines. " +
                              "Default: max(2, CPUS/2) where CPUS is the number " +
                              "of available processors. Must be >= 1")
-    public int parseThreads = 1;
+    public int parseThreads = Math.max(2, CPUS / 2);
 
     @Parameter(names = {"--start-file"}, arity = 1,
             description = "start file index for partial loading")

hugegraph-loader/src/test/java/org/apache/hugegraph/loader/test/functional/FileLoadTest.java

@@ -1197,7 +1197,8 @@ public void testMultiFilesHaveHeader() {
                 "-s", configPath("multi_files_have_header/schema.groovy"),
                 "-g", GRAPH,
                 "-h", SERVER,
-                "--test-mode", "true"
+                "--test-mode", "true",
+                "--parser-threads", "1"
         };
         loadWithAuth(args);
 
@@ -1628,7 +1629,8 @@ public void testFilterPathBySuffix() {
                 "-s", configPath("filter_path_by_suffix/schema.groovy"),
                 "-g", GRAPH,
                 "-h", SERVER,
-                "--test-mode", "true"
+                "--test-mode", "true",
+                "--parser-threads", "1"
         };
         loadWithAuth(args);