From d9daeddcfb8251945bc9dae53c5cb8a45251ceb8 Mon Sep 17 00:00:00 2001
From: Tyler Kindy <tkindy@hubspot.com>
Date: Fri, 14 Jun 2024 11:30:13 -0400
Subject: [PATCH] Add tests

---
 .../ClassInitializationDeadlockTest.java      | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)

diff --git a/core/src/test/java/com/google/errorprone/bugpatterns/ClassInitializationDeadlockTest.java b/core/src/test/java/com/google/errorprone/bugpatterns/ClassInitializationDeadlockTest.java
index b1c51f7f1d1..944937e3fc2 100644
--- a/core/src/test/java/com/google/errorprone/bugpatterns/ClassInitializationDeadlockTest.java
+++ b/core/src/test/java/com/google/errorprone/bugpatterns/ClassInitializationDeadlockTest.java
@@ -18,6 +18,7 @@
 
 import com.google.auto.value.processor.AutoValueProcessor;
 import com.google.errorprone.CompilationTestHelper;
+
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
@@ -309,4 +310,63 @@ public void nonNestedSubclass() {
             "class B extends A {}")
         .doTest();
   }
+
+  @Test
+  public void simpleSubclassMethodReference() {
+    testHelper
+        .addSourceLines(
+            "Foo.java",
+            "import java.util.function.Supplier;",
+            "class A {",
+            "  static Supplier<B> supplier = B::new;",
+            "}",
+            "class B extends A {}")
+        .doTest();
+  }
+
+  @Test
+  public void compoundSubclassMethodReference() {
+    testHelper
+        .addSourceLines(
+            "Foo.java",
+            "import java.util.Comparator;",
+            "class A {",
+            "  static Comparator<B> comparator = Comparator.comparing(B::value);",
+            "}",
+            "class B extends A {",
+            "  int value;",
+            "  int value() {",
+            "    return value;",
+            "  }",
+            "}")
+        .doTest();
+  }
+
+  @Test
+  public void lambda() {
+    testHelper
+        .addSourceLines(
+            "Foo.java",
+            "import java.util.function.Supplier;",
+            "class A {",
+            "  static Supplier<B> supplier = () -> new B();",
+            "}",
+            "class B extends A {}")
+        .doTest();
+  }
+
+  @Test
+  public void subclassStaticMethod() {
+    testHelper
+        .addSourceLines(
+            "Foo.java",
+            "class A {",
+            "  // BUG: Diagnostic contains:",
+            "  static int value = B.value(); ",
+            "}",
+            "class B extends A {",
+            "  static int value() { return 0; }",
+            "}")
+        .doTest();
+  }
 }