第二题

src/test/kotlin/io/github/sor2171/puzzles/extend/TestLifecycleLoggerExtension.kt

@@ -0,0 +1,22 @@
+package io.github.sor2171.puzzles.extend
+
+import org.junit.jupiter.api.extension.AfterAllCallback
+import org.junit.jupiter.api.extension.BeforeAllCallback
+import org.junit.jupiter.api.extension.ExtensionContext
+
+class TestLifecycleLoggerExtension : BeforeAllCallback, AfterAllCallback {
+
+    override fun beforeAll(context: ExtensionContext) {
+        val testClassName = context.requiredTestClass.simpleName
+        println()
+        println("=== [START] $testClassName ===")
+        println()
+    }
+
+    override fun afterAll(context: ExtensionContext) {
+        val testClassName = context.requiredTestClass.simpleName
+        println()
+        println("=== [ END ] $testClassName ===")
+        println()
+    }
+}

src/test/kotlin/io/github/sor2171/puzzles/extra/More strange variables.kt

@@ -0,0 +1,36 @@
+@file:SkipCompile(skip = true)
+@file:Suppress("ClassName", "JoinDeclarationAndAssignment", "KotlinConstantConditions")
+
+package io.github.sor2171.puzzles.extra
+
+import io.github.sor2171.puzzles.annotation.SkipCompile
+import org.junit.jupiter.api.Test
+
+/**
+ * 本关考察你对无符号数字的理解。
+ */
+class `More strange variables` {
+    // write start 1
+    
+    // write  end  1
+
+    init {
+        a = 0xEEBAU
+    }
+
+    @Test
+    fun puzzle() {
+        val b: Short
+        val c: Short
+
+        // write start 2
+        
+        // write  end  2
+
+        println(a)
+        println(b)
+        a = b.toUInt() * 0x10000U + c.toUInt()
+        assert(a == 0xFFFFFFFFU)
+        println(a)
+    }
+}