暂存提交

2026-08-14 15:15:43 +08:00
parent 8540147992
commit 0192380e81
8 changed files with 73 additions and 4 deletions
@@ -0,0 +1,29 @@
+package com.baiyue.common.event;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+
+class EventPayloadCanonicalizerTest {
+    private final ObjectMapper json = new ObjectMapper();
+
+    @Test
+    void equivalentNumberLexemesHaveTheSameCanonicalFormAndHash() throws Exception {
+        var scaled = json.readTree("{\"weight\":30.0,\"volume\":0.3150,\"quantity\":3}");
+        var normalized = json.readTree("{\"quantity\":3.0,\"volume\":0.315,\"weight\":3E+1}");
+        assertArrayEquals(EventPayloadCanonicalizer.canonicalize(scaled), EventPayloadCanonicalizer.canonicalize(normalized));
+        assertEquals(EventPayloadHash.sha256(EventPayloadCanonicalizer.canonicalize(scaled)),
+            EventPayloadHash.sha256(EventPayloadCanonicalizer.canonicalize(normalized)));
+    }
+
+    @Test
+    void negativeZeroIsZeroAndLegacyHashRemainsAvailable() throws Exception {
+        var negativeZero = json.readTree("{\"value\":-0.000}");
+        var zero = json.readTree("{\"value\":0}");
+        assertArrayEquals(EventPayloadCanonicalizer.canonicalize(negativeZero), EventPayloadCanonicalizer.canonicalize(zero));
+        assertNotEquals(EventPayloadHash.sha256(EventPayloadCanonicalizer.canonicalize(negativeZero)),
+            EventPayloadHash.sha256(EventPayloadCanonicalizer.canonicalizeLegacy(negativeZero)));
+    }
+}