Create and integrate JavaBootstrap, and use fake top-level Java skylark objects for Skydoc.

RELNOTES: None.
PiperOrigin-RevId: 202697176
diff --git a/src/test/java/com/google/devtools/build/skydoc/BUILD b/src/test/java/com/google/devtools/build/skydoc/BUILD
index 1c495da..d235bf8 100644
--- a/src/test/java/com/google/devtools/build/skydoc/BUILD
+++ b/src/test/java/com/google/devtools/build/skydoc/BUILD
@@ -67,6 +67,13 @@
 )
 
 skydoc_test(
+    name = "java_basic_test",
+    golden_file = "testdata/java_basic_test/golden.txt",
+    input_file = "testdata/java_basic_test/input.bzl",
+    skydoc = "//src/main/java/com/google/devtools/build/skydoc",
+)
+
+skydoc_test(
     name = "multiple_files_test",
     golden_file = "testdata/multiple_files_test/golden.txt",
     input_file = "testdata/multiple_files_test/input.bzl",