From a81297680bf1b0536227db41fd9596ee42519c0e Mon Sep 17 00:00:00 2001
From: Seongho Bae <me@seonghobae.me>
Date: Tue, 15 Sep 2026 21:07:41 +0900
Subject: [PATCH] test(reports): execute comparison graphic axis badge state
 matrix

---
 frontend/src/leftoverMapAxisBadge.test.ts | 53 +++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/frontend/src/leftoverMapAxisBadge.test.ts b/frontend/src/leftoverMapAxisBadge.test.ts
index 579273f88..ccab2a6f6 100644
--- a/frontend/src/leftoverMapAxisBadge.test.ts
+++ b/frontend/src/leftoverMapAxisBadge.test.ts
@@ -5,8 +5,10 @@ import {
   LEFTOVER_MAP_AXIS_BADGE_SHARE,
   LEFTOVER_MAP_AXIS_BADGE_SINGULAR,
 } from "./leftoverMapAxisBadge";
+import { LEFTOVER_MAP_COMPARE_PLOT_AXIS_SHARE } from "./leftoverMapPlotAxisShare";
 import {
   leftoverMapCompareAxisBadge,
+  leftoverMapComparePlotAxisBadge,
   LEFTOVER_MAP_COMPARE_AXIS_SHARE,
   LEFTOVER_MAP_COMPARE_AXIS_SINGULAR,
   LEFTOVER_MAP_COMPARE_AXIS_SINGULAR_SHARE,
@@ -68,6 +70,57 @@ describe("leftoverMapAxisBadgeSingular", () => {
   });
 });
 
+describe("leftoverMapComparePlotAxisBadge", () => {
+  it("returns no graphic badge when neither persisted measure is usable", () => {
+    expect(
+      leftoverMapComparePlotAxisBadge({
+        axis_index: 1,
+        leftover_singular_value: Number.NaN,
+        leftover_share: Number.POSITIVE_INFINITY,
+      }),
+    ).toBeNull();
+  });
+
+  it("keeps graphic share-only evidence independent", () => {
+    expect(
+      leftoverMapComparePlotAxisBadge({
+        axis_index: 2,
+        leftover_singular_value: null,
+        leftover_share: 0.18,
+      }),
+    ).toEqual({
+      template: LEFTOVER_MAP_COMPARE_PLOT_AXIS_SHARE,
+      values: { axis: 2, share: "18" },
+    });
+  });
+
+  it("keeps graphic singular-only evidence independent and preserves finite zero", () => {
+    expect(
+      leftoverMapComparePlotAxisBadge({
+        axis_index: 1,
+        leftover_singular_value: 0,
+        leftover_share: null,
+      }),
+    ).toEqual({
+      template: LEFTOVER_MAP_COMPARE_PLOT_AXIS_SINGULAR,
+      values: { axis: 1, value: "0.00" },
+    });
+  });
+
+  it("combines persisted graphic singular and share evidence without deriving either", () => {
+    expect(
+      leftoverMapComparePlotAxisBadge({
+        axis_index: 1,
+        leftover_singular_value: 1.24,
+        leftover_share: 0.42,
+      }),
+    ).toEqual({
+      template: LEFTOVER_MAP_COMPARE_PLOT_AXIS_SINGULAR_SHARE,
+      values: { axis: 1, value: "1.24", share: "42" },
+    });
+  });
+});
+
 describe("leftoverMapCompareAxisBadge", () => {
   it("keeps persisted singular and share evidence independent", () => {
     expect(