From 6ec259a0e71174651bae95d4628138bf6fd68742 Mon Sep 17 00:00:00 2001
From: kj_sh604
Date: Sun, 15 Mar 2026 16:19:35 -0400
Subject: refactor: packages/

---
 packages/math/segment.test.ts | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 packages/math/segment.test.ts

(limited to 'packages/math/segment.test.ts')

diff --git a/packages/math/segment.test.ts b/packages/math/segment.test.ts
new file mode 100644
index 0000000..4237a3c
--- /dev/null
+++ b/packages/math/segment.test.ts
@@ -0,0 +1,21 @@
+import { pointFrom } from "./point";
+import { lineSegment, lineSegmentIntersectionPoints } from "./segment";
+
+describe("line-segment intersections", () => {
+  it("should correctly detect intersection", () => {
+    expect(
+      lineSegmentIntersectionPoints(
+        lineSegment(pointFrom(0, 0), pointFrom(5, 0)),
+        lineSegment(pointFrom(2, -2), pointFrom(3, 2)),
+      ),
+    ).toEqual(pointFrom(2.5, 0));
+  });
+  it("should correctly detect non-intersection", () => {
+    expect(
+      lineSegmentIntersectionPoints(
+        lineSegment(pointFrom(0, 0), pointFrom(5, 0)),
+        lineSegment(pointFrom(3, 1), pointFrom(4, 4)),
+      ),
+    ).toEqual(null);
+  });
+});
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