feat: w06 类型推断增强辅助

src/test/java/com/codechecker/cache/detector/CacheReadHintDetectorTest.java

@@ -0,0 +1,71 @@
+package com.codechecker.cache.detector;
+
+import com.codechecker.cache.schema.SourceIndex;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class CacheReadHintDetectorTest {
+
+    @Test
+    void detectsParseObjectWithRedisGetPairing() {
+        String vo = ""
+                + "package demo.model;\n"
+                + "public class FooVo { private String name; }\n";
+        String source = ""
+                + "package demo;\n"
+                + "import demo.model.FooVo;\n"
+                + "public class CacheService {\n"
+                + "  private RedisUtil redisUtil;\n"
+                + "  private static final String KEY = \"demo:foo:\";\n"
+                + "  public FooVo load(String id) {\n"
+                + "    String raw = redisUtil.getString(KEY + id);\n"
+                + "    return JSON.parseObject(raw, FooVo.class);\n"
+                + "  }\n"
+                + "  public void save(String id, FooVo vo) {\n"
+                + "    redisUtil.insert(KEY + id, JSON.toJSONString(vo), 60);\n"
+                + "  }\n"
+                + "}\n";
+
+        SourceIndex index = new SourceIndex();
+        index.addSource(vo);
+        index.addSource(source);
+
+        List<CacheReadHint> hints = new CacheReadHintDetector(index)
+                .detect("CacheService.java", source);
+        assertEquals(1, hints.size());
+        CacheReadHint hint = hints.get(0);
+        assertEquals("demo.model.FooVo", hint.getResolvedValueType());
+        assertFalse(hint.isRootArray());
+        assertEquals("demo:foo:*", hint.getResolvedKeyPattern());
+    }
+
+    @Test
+    void detectsParseArray() {
+        String vo = ""
+                + "package demo.model;\n"
+                + "public class ItemVo { private int rank; }\n";
+        String source = ""
+                + "package demo;\n"
+                + "import demo.model.ItemVo;\n"
+                + "public class ListCache {\n"
+                + "  public List<ItemVo> load(String raw) {\n"
+                + "    return JSON.parseArray(raw, ItemVo.class);\n"
+                + "  }\n"
+                + "}\n";
+
+        SourceIndex index = new SourceIndex();
+        index.addSource(vo);
+        index.addSource(source);
+
+        List<CacheReadHint> hints = new CacheReadHintDetector(index)
+                .detect("ListCache.java", source);
+        assertEquals(1, hints.size());
+        assertTrue(hints.get(0).isRootArray());
+        assertEquals("demo.model.ItemVo", hints.get(0).getResolvedValueType());
+    }
+}