관리자 슬래시 명령 적용 계획 분리

tests/markdown-slash-commands.test.js

@@ -3,6 +3,7 @@ import test from 'node:test'
 import {
   addSlashSuppressedLine,
   clampSlashHighlightedIndex,
+  createSlashCommandApplyPlan,
   getMediaPickerKindFromSlashAction,
   getNextSlashHighlightedIndex,
   getSlashCommandFocusTarget,
@@ -35,6 +36,56 @@ test('정확한 슬래시 명령과 미디어 액션을 판별한다', () => {
   assert.equal(getMediaPickerKindFromSlashAction('lines'), '')
 })
 
+test('슬래시 명령 적용 계획은 미디어와 줄 삽입을 구분한다', () => {
+  assert.deepEqual(createSlashCommandApplyPlan({
+    command: resolveSlashCommand('image'),
+    sourceLine: 2
+  }), {
+    kind: 'media',
+    line: 2,
+    mediaKind: 'image'
+  })
+
+  const headingPlan = createSlashCommandApplyPlan({
+    command: resolveSlashCommand('h2'),
+    sourceLine: 4
+  })
+
+  assert.deepEqual(headingPlan, {
+    kind: 'lines',
+    line: 4,
+    lines: ['## ']
+  })
+  assert.notEqual(headingPlan.lines, resolveSlashCommand('h2')?.lines)
+})
+
+test('슬래시 명령 적용 계획은 적용할 수 없는 입력을 무시한다', () => {
+  assert.deepEqual(createSlashCommandApplyPlan({
+    command: null,
+    sourceLine: 1
+  }), {
+    kind: 'none'
+  })
+  assert.deepEqual(createSlashCommandApplyPlan({
+    command: resolveSlashCommand('image'),
+    sourceLine: null
+  }), {
+    kind: 'none'
+  })
+  assert.deepEqual(createSlashCommandApplyPlan({
+    command: {
+      id: 'broken',
+      label: '깨진 명령',
+      description: '',
+      keywords: [],
+      action: 'unknown'
+    },
+    sourceLine: 1
+  }), {
+    kind: 'none'
+  })
+})
+
 test('미디어 슬래시 명령 지연 commit은 같은 줄 slash 원문일 때만 무시한다', () => {
   assert.equal(shouldIgnorePendingMediaSlashCommit({
     pendingInsertLine: 3,