diff --git a/packages/e2e/src/diff.cursor-navigation-horizontal.ts b/packages/e2e/src/diff.cursor-navigation-horizontal.ts
new file mode 100644
index 0000000..27a0a06
--- /dev/null
+++ b/packages/e2e/src/diff.cursor-navigation-horizontal.ts
@@ -0,0 +1,28 @@
+import type { Test } from '@lvce-editor/test-with-playwright'
+
+export const name = 'diff.cursor-navigation-horizontal'
+
+export const test: Test = async ({ Command, DiffView, expect, FileSystem, Locator, Workspace }) => {
+  const tmpDir = await FileSystem.getTmpDir()
+  await FileSystem.writeFile(`${tmpDir}/before.txt`, 'alpha\nbeta')
+  await FileSystem.writeFile(`${tmpDir}/after.txt`, 'alpha\nbeta')
+  await Workspace.setPath(tmpDir)
+
+  await DiffView.open(`${tmpDir}/before.txt`, `${tmpDir}/after.txt`)
+
+  const cursor = Locator('.EditorCursorRight')
+  await Command.execute('DiffView.setCursorPosition', 4, 0)
+  await expect(cursor).toHaveCSS('left', '85px')
+  await expect(cursor).toHaveCSS('top', '0px')
+
+  await Command.execute('DiffView.moveCursorRight')
+  await expect(cursor).toHaveCSS('left', '94px')
+
+  await Command.execute('DiffView.moveCursorRight')
+  await expect(cursor).toHaveCSS('left', '49px')
+  await expect(cursor).toHaveCSS('top', '20px')
+
+  await Command.execute('DiffView.moveCursorLeft')
+  await expect(cursor).toHaveCSS('left', '94px')
+  await expect(cursor).toHaveCSS('top', '0px')
+}
diff --git a/packages/e2e/src/diff.cursor-navigation-line-boundaries.ts b/packages/e2e/src/diff.cursor-navigation-line-boundaries.ts
new file mode 100644
index 0000000..8cd34eb
--- /dev/null
+++ b/packages/e2e/src/diff.cursor-navigation-line-boundaries.ts
@@ -0,0 +1,23 @@
+import type { Test } from '@lvce-editor/test-with-playwright'
+
+export const name = 'diff.cursor-navigation-line-boundaries'
+
+export const test: Test = async ({ Command, DiffView, expect, FileSystem, Locator, Workspace }) => {
+  const tmpDir = await FileSystem.getTmpDir()
+  await FileSystem.writeFile(`${tmpDir}/before.txt`, 'alpha\nbeta')
+  await FileSystem.writeFile(`${tmpDir}/after.txt`, 'alpha\nbeta')
+  await Workspace.setPath(tmpDir)
+
+  await DiffView.open(`${tmpDir}/before.txt`, `${tmpDir}/after.txt`)
+
+  const cursor = Locator('.EditorCursorRight')
+  await Command.execute('DiffView.setCursorPosition', 2, 1)
+  await expect(cursor).toHaveCSS('left', '67px')
+  await expect(cursor).toHaveCSS('top', '20px')
+
+  await Command.execute('DiffView.moveCursorToStartOfLine')
+  await expect(cursor).toHaveCSS('left', '49px')
+
+  await Command.execute('DiffView.moveCursorToEndOfLine')
+  await expect(cursor).toHaveCSS('left', '85px')
+}
diff --git a/packages/e2e/src/diff.cursor-navigation-vertical.ts b/packages/e2e/src/diff.cursor-navigation-vertical.ts
new file mode 100644
index 0000000..2a0088c
--- /dev/null
+++ b/packages/e2e/src/diff.cursor-navigation-vertical.ts
@@ -0,0 +1,29 @@
+import type { Test } from '@lvce-editor/test-with-playwright'
+
+export const name = 'diff.cursor-navigation-vertical'
+
+export const test: Test = async ({ Command, DiffView, expect, FileSystem, Locator, Workspace }) => {
+  const tmpDir = await FileSystem.getTmpDir()
+  await FileSystem.writeFile(`${tmpDir}/before.txt`, 'alpha\nb\ngamma')
+  await FileSystem.writeFile(`${tmpDir}/after.txt`, 'alpha\nb\ngamma')
+  await Workspace.setPath(tmpDir)
+
+  await DiffView.open(`${tmpDir}/before.txt`, `${tmpDir}/after.txt`)
+
+  const cursor = Locator('.EditorCursorRight')
+  await Command.execute('DiffView.setCursorPosition', 5, 0)
+  await expect(cursor).toHaveCSS('left', '94px')
+  await expect(cursor).toHaveCSS('top', '0px')
+
+  await Command.execute('DiffView.moveCursorDown')
+  await expect(cursor).toHaveCSS('left', '58px')
+  await expect(cursor).toHaveCSS('top', '20px')
+
+  await Command.execute('DiffView.moveCursorDown')
+  await expect(cursor).toHaveCSS('left', '58px')
+  await expect(cursor).toHaveCSS('top', '40px')
+
+  await Command.execute('DiffView.moveCursorUp')
+  await expect(cursor).toHaveCSS('left', '58px')
+  await expect(cursor).toHaveCSS('top', '20px')
+}
diff --git a/packages/e2e/src/diff.delete-right-character.ts b/packages/e2e/src/diff.delete-right-character.ts
new file mode 100644
index 0000000..b7c024b
--- /dev/null
+++ b/packages/e2e/src/diff.delete-right-character.ts
@@ -0,0 +1,18 @@
+import type { Test } from '@lvce-editor/test-with-playwright'
+
+export const name = 'diff.delete-right-character'
+
+export const test: Test = async ({ Command, DiffView, expect, FileSystem, Locator, Workspace }) => {
+  const tmpDir = await FileSystem.getTmpDir()
+  await FileSystem.writeFile(`${tmpDir}/before.txt`, 'pear world')
+  await FileSystem.writeFile(`${tmpDir}/after.txt`, 'pear world')
+  await Workspace.setPath(tmpDir)
+
+  await DiffView.open(`${tmpDir}/before.txt`, `${tmpDir}/after.txt`)
+
+  const afterRows = Locator('.DiffEditorContentRight .DiffEditorRows')
+  await Command.execute('DiffView.setCursorPosition', 1, 0)
+  await Command.execute('DiffView.deleteRight')
+
+  await expect(afterRows).toHaveText('par world')
+}
diff --git a/packages/e2e/src/diff.delete-right-line-break.ts b/packages/e2e/src/diff.delete-right-line-break.ts
new file mode 100644
index 0000000..414fac6
--- /dev/null
+++ b/packages/e2e/src/diff.delete-right-line-break.ts
@@ -0,0 +1,18 @@
+import type { Test } from '@lvce-editor/test-with-playwright'
+
+export const name = 'diff.delete-right-line-break'
+
+export const test: Test = async ({ Command, DiffView, expect, FileSystem, Locator, Workspace }) => {
+  const tmpDir = await FileSystem.getTmpDir()
+  await FileSystem.writeFile(`${tmpDir}/before.txt`, 'alpha\nbeta')
+  await FileSystem.writeFile(`${tmpDir}/after.txt`, 'alpha\nbeta')
+  await Workspace.setPath(tmpDir)
+
+  await DiffView.open(`${tmpDir}/before.txt`, `${tmpDir}/after.txt`)
+
+  const afterRows = Locator('.DiffEditorContentRight .DiffEditorRows')
+  await Command.execute('DiffView.setCursorPosition', 5, 0)
+  await Command.execute('DiffView.deleteRight')
+
+  await expect(afterRows).toHaveText('alphabeta')
+}