diff --git a/__test__/Polyline/__snapshots__/offset.test.ts.snap b/__test__/Polyline/__snapshots__/offset.test.ts.snap
index 6f5bb4853..945e1a284 100644
--- a/__test__/Polyline/__snapshots__/offset.test.ts.snap
+++ b/__test__/Polyline/__snapshots__/offset.test.ts.snap
@@ -101,3 +101,54 @@ Array [
   ],
 ]
 `;
+
+exports[`IKKGK圆与直线补圆弧 3`] = `
+Array [
+  1,
+  Array [
+    "Polyline",
+    1,
+    1,
+    -1,
+    false,
+    7,
+    -1,
+    Array [
+      1,
+      0,
+      0,
+      0,
+      0,
+      1,
+      0,
+      0,
+      0,
+      0,
+      1,
+      0,
+      0,
+      0,
+      0,
+      1,
+    ],
+    2,
+    3,
+    Array [
+      -28.166325866517482,
+      26.523418698930218,
+    ],
+    0,
+    Array [
+      -40.232543460173595,
+      17.223029145747052,
+    ],
+    -2.8074677582773755,
+    Array [
+      -49.51728832490683,
+      19.64066475707001,
+    ],
+    0,
+    false,
+  ],
+]
+`;
diff --git a/__test__/Polyline/offset.test.ts b/__test__/Polyline/offset.test.ts
index b9fc8d02a..c5a72a53c 100644
--- a/__test__/Polyline/offset.test.ts
+++ b/__test__/Polyline/offset.test.ts
@@ -2,6 +2,7 @@ import { Factory } from "../../src/DatabaseServices/CADFactory";
 import { CADFile } from "../../src/DatabaseServices/CADFile";
 import { Polyline } from "../../src/DatabaseServices/Polyline";
 import { Curve } from "../../src/DatabaseServices/Curve";
+import { Entity } from "../../src/DatabaseServices/Entity";
 Factory(Polyline);
 
 function loadFile(data)
@@ -15,6 +16,17 @@ function loadFile(data)
     }
     return cus;
 }
+// file.only
+function EntityToMatchSnapshot(ens: Entity[])
+{
+    let f = new CADFile();
+    f.Write(ens.length);
+
+    for (let e of ens)
+        f.WriteObject(e);
+
+    expect(f.Data).toMatchSnapshot();
+}
 
 test('IKKGK圆与直线补圆弧', () =>
 {
@@ -27,28 +39,20 @@ test('IKKGK圆与直线补圆弧', () =>
     //负1 左边. 禁止补圆弧
     let cus = pl.GetOffsetCurves(-1);
 
-    f.Data = [];
-    f.Write(cus.length);
-
-    cus.forEach(c => f.WriteObject(c));
-
-    expect(f.Data).toMatchSnapshot();
+    EntityToMatchSnapshot(cus);
 
+    pl.GetOffsetCurves(-5.654208780429431);
+    //
 
     //翻转曲线后测试
     pl.Reverse();
     cus = pl.GetOffsetCurves(1);
 
-    f.Data = [];
-    f.Write(cus.length);
-    cus.forEach(c => f.WriteObject(c));
-    expect(f.Data).toMatchSnapshot();
-
-
+    EntityToMatchSnapshot(cus);
 
     //圆丢失的问题
     cus = pl.GetOffsetCurves(-1.926388985025112);
-    expect(cus.length).toBe(1);
+    EntityToMatchSnapshot(cus);
 });
 
 test('多段线偏移测试1', () =>