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super
2026-05-22 09:41:31 +08:00
parent 73d25fcbcb
commit 70e902e7ea
22 changed files with 1136 additions and 52 deletions
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backend-java/src/test/java/com/nanri/aiimage/modules/similarasin/util/SimilarAsinImageEmbedderTest.java Normal file
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package com.nanri.aiimage.modules.similarasin.util;
import org.junit.jupiter.api.Test;
import javax.imageio.ImageIO;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Collections;
import java.util.List;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.assertFalse;
class SimilarAsinImageEmbedderTest {
private final SimilarAsinImageEmbedder embedder = new SimilarAsinImageEmbedder();
@Test
void resizeImageProducesThumbnailUnderHardCap() throws Exception {
BufferedImage src = new BufferedImage(1200, 1600, BufferedImage.TYPE_INT_RGB);
Graphics2D g = src.createGraphics();
try {
g.setColor(new Color(0x33, 0x66, 0x99));
g.fillRect(0, 0, 1200, 1600);
} finally {
g.dispose();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(src, "jpg", baos);
byte[] thumb = embedder.resizeImage("https://example.com/big.jpg", baos.toByteArray());
assertNotNull(thumb);
assertTrue(thumb.length > 0, "thumb 不可为空");
assertTrue(thumb.length <= SimilarAsinImageEmbedder.MAX_THUMB_SIZE_BYTES,
"thumb 字节应 <= 40KB 上限，实际=" + thumb.length);
BufferedImage decoded = ImageIO.read(new java.io.ByteArrayInputStream(thumb));
assertNotNull(decoded, "thumb 应可被 ImageIO 重新解码");
int longEdge = Math.max(decoded.getWidth(), decoded.getHeight());
assertEquals(SimilarAsinImageEmbedder.TARGET_LONG_EDGE_PX, longEdge,
"长边应等于 TARGET_LONG_EDGE_PX=300");
}
@Test
void resizeOversizeExceptionCarriesUrlAndSize() {
SimilarAsinImageEmbedder.ResizeOversizeException ex =
new SimilarAsinImageEmbedder.ResizeOversizeException("https://example.com/huge.jpg", 99999);
assertEquals("https://example.com/huge.jpg", ex.url());
assertEquals(99999, ex.size());
assertTrue(ex.getMessage().contains("oversize"));
assertTrue(ex.getMessage().contains("99999"));
}
@Test
void resizeUnsupportedFormatThrowsIOException() {
byte[] notAnImage = "not an image at all, just some bytes".getBytes();
Exception ex = assertThrows(Exception.class,
() -> embedder.resizeImage("https://example.com/broken.bin", notAnImage));
assertTrue(ex instanceof java.io.IOException || ex instanceof RuntimeException,
"应为 IOException 或 RuntimeException 兜底，实际=" + ex.getClass().getSimpleName());
assertTrue(ex.getMessage() == null
|| ex.getMessage().toLowerCase().contains("unsupported")
|| ex.getMessage().toLowerCase().contains("unable"),
"异常消息应反映不支持/无法解析");
}
@Test
void safeDnsRejectsPrivateIpsOnLookup() {
SimilarAsinImageEmbedder.SafeDns safeDns = new SimilarAsinImageEmbedder.SafeDns(
hostname -> Collections.singletonList(InetAddress.getByName("127.0.0.1")));
UnknownHostException ex = assertThrows(UnknownHostException.class,
() -> safeDns.lookup("rebound.example.com"));
assertTrue(ex.getMessage().contains("blocked private/loopback ip"),
"异常消息应说明被阻断，实际=" + ex.getMessage());
}
@Test
void safeDnsAllowsPublicIpResolution() throws Exception {
SimilarAsinImageEmbedder.SafeDns safeDns = new SimilarAsinImageEmbedder.SafeDns(
hostname -> Collections.singletonList(InetAddress.getByName("8.8.8.8")));
List<InetAddress> result = safeDns.lookup("dns.google");
assertEquals(1, result.size());
assertEquals("8.8.8.8", result.get(0).getHostAddress());
}
@Test
void safeDnsRejectsMixedResultsContainingPrivateIp() {
SimilarAsinImageEmbedder.SafeDns safeDns = new SimilarAsinImageEmbedder.SafeDns(
hostname -> List.of(
InetAddress.getByName("8.8.8.8"),
InetAddress.getByName("10.0.0.5")));
// 任一结果落入私网即整体阻断，关闭 DNS rebinding 通道
assertThrows(UnknownHostException.class,
() -> safeDns.lookup("partial-rebound.example.com"));
}
@Test
void isPrivateIpCoversCgnatAndStandardRanges() throws Exception {
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("127.0.0.1")), "loopback");
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("10.0.0.1")), "10/8");
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("192.168.1.1")), "192.168/16");
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("169.254.0.1")), "link-local");
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("172.16.0.1")), "site-local 172.16");
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("100.64.0.1")), "CGNAT lower");
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("100.127.255.255")), "CGNAT upper");
assertFalse(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("8.8.8.8")), "public DNS");
assertFalse(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("100.63.0.1")), "below CGNAT 段");
assertFalse(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("100.128.0.1")), "above CGNAT 段");
// 受限广播
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("255.255.255.255")), "受限广播");
// IPv6 ULA fc00::/7
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("fc00::1")), "ULA fc00::");
assertTrue(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("fd12:3456:789a::1")), "ULA fd::");
// IPv6 公网放行
assertFalse(SimilarAsinImageEmbedder.isPrivateIp(InetAddress.getByName("2001:4860:4860::8888")), "Google IPv6 DNS");
}
@Test
void validateHttpsUrlRejectsHttpAndPrivateHosts() {
assertThrows(SimilarAsinImageEmbedder.UnsupportedUrlException.class,
() -> SimilarAsinImageEmbedder.validateHttpsUrl("http://example.com/a.jpg"));
assertThrows(SimilarAsinImageEmbedder.UnsupportedUrlException.class,
() -> SimilarAsinImageEmbedder.validateHttpsUrl("https://localhost/a.jpg"));
assertThrows(SimilarAsinImageEmbedder.UnsupportedUrlException.class,
() -> SimilarAsinImageEmbedder.validateHttpsUrl("https://127.0.0.1/a.jpg"));
assertThrows(SimilarAsinImageEmbedder.UnsupportedUrlException.class,
() -> SimilarAsinImageEmbedder.validateHttpsUrl("https://10.0.0.5/a.jpg"));
assertThrows(SimilarAsinImageEmbedder.UnsupportedUrlException.class,
() -> SimilarAsinImageEmbedder.validateHttpsUrl("https://192.168.1.1/a.jpg"));
assertThrows(SimilarAsinImageEmbedder.UnsupportedUrlException.class,
() -> SimilarAsinImageEmbedder.validateHttpsUrl("https://172.16.0.1/a.jpg"));
// 公网 https 应通过
SimilarAsinImageEmbedder.validateHttpsUrl("https://m.media-amazon.com/images/I/abc.jpg");
SimilarAsinImageEmbedder.validateHttpsUrl("https://cbu01.alicdn.com/img/ibank/xxx.jpg");
}
@Test
void downloadOversizeExceptionCarriesUrlAndSize() {
SimilarAsinImageEmbedder.DownloadOversizeException ex =
new SimilarAsinImageEmbedder.DownloadOversizeException("https://example.com/big.jpg", 12345678L);
assertEquals("https://example.com/big.jpg", ex.url());
assertEquals(12345678L, ex.size());
assertTrue(ex.getMessage().contains("oversize"));
}
}