diff --git a/app/Http/Controllers/PlayerController.php b/app/Http/Controllers/PlayerController.php
index 992a9a33..ba351973 100644
--- a/app/Http/Controllers/PlayerController.php
+++ b/app/Http/Controllers/PlayerController.php
@@ -56,7 +56,7 @@ class PlayerController extends Controller
             'player_name' => 'required|'.(option('allow_chinese_playername') ? 'pname_chinese' : 'playername')
         ]);
 
-        Event::fire(new CheckPlayerExists($request->input('player_name')));
+        event(new CheckPlayerExists($request->input('player_name')));
 
         if (!Player::where('player_name', $request->input('player_name'))->get()->isEmpty()) {
             return json(trans('user.player.add.repeated'), 6);
@@ -66,7 +66,7 @@ class PlayerController extends Controller
             return json(trans('user.player.add.lack-score'), 7);
         }
 
-        Event::fire(new PlayerWillBeAdded($request->input('player_name')));
+        event(new PlayerWillBeAdded($request->input('player_name')));
 
         $player = new Player;
 
@@ -76,7 +76,7 @@ class PlayerController extends Controller
         $player->last_modified = Utils::getTimeFormatted();
         $player->save();
 
-        Event::fire(new PlayerWasAdded($player));
+        event(new PlayerWasAdded($player));
 
         $this->user->setScore(option('score_per_player'), 'minus');
 
@@ -87,22 +87,21 @@ class PlayerController extends Controller
     {
         $player_name = $this->player->player_name;
 
-        Event::fire(new PlayerWillBeDeleted($this->player));
+        event(new PlayerWillBeDeleted($this->player));
 
-        if ($this->player->delete()) {
+        $this->player->delete();
 
-            if (option('return_score'))
-                $this->user->setScore(Option::get('score_per_player'), 'plus');
+        if (option('return_score'))
+            $this->user->setScore(Option::get('score_per_player'), 'plus');
 
-            Event::fire(new PlayerWasDeleted($player_name));
+        event(new PlayerWasDeleted($player_name));
 
-            return json(trans('user.player.delete.success', ['name' => $player_name]), 0);
-        }
+        return json(trans('user.player.delete.success', ['name' => $player_name]), 0);
     }
 
     public function show()
     {
-        return json_encode($this->player->toArray(), JSON_NUMERIC_CHECK);
+        return response()->json($this->player->toArray());
     }
 
     public function rename(Request $request)
@@ -126,6 +125,9 @@ class PlayerController extends Controller
 
     /**
      * A wrapper of Player::setTexture()
+     *
+     * @param Request $request
+     * @return \Illuminate\Http\JsonResponse
      */
     public function setTexture(Request $request)
     {
diff --git a/app/Models/Player.php b/app/Models/Player.php
index a6995e2c..2b50742f 100644
--- a/app/Models/Player.php
+++ b/app/Models/Player.php
@@ -46,7 +46,7 @@ class Player extends Model
     /**
      * Return the owner of the player.
      *
-     * @return App\Models\User
+     * @return \App\Models\User
      */
     public function user()
     {
@@ -75,7 +75,7 @@ class Player extends Model
      * Set textures for the player.
      *
      * @param  array $tids
-     * @return mixed
+     * @return $this
      */
     public function setTexture(Array $tids)
     {
@@ -91,7 +91,9 @@ class Player extends Model
 
         $this->save();
 
-        return Event::fire(new PlayerProfileUpdated($this));
+        event(new PlayerProfileUpdated($this));
+
+        return $this;
     }
 
     /**
@@ -165,6 +167,8 @@ class Player extends Model
      * Set preferred model for the player.
      *
      * @param string $type slim|default
+     *
+     * @return $this
      */
     public function setPreference($type)
     {
@@ -173,7 +177,9 @@ class Player extends Model
             'last_modified' => Utils::getTimeFormatted()
         ]);
 
-        return Event::fire(new PlayerProfileUpdated($this));
+        event(new PlayerProfileUpdated($this));
+
+        return $this;
     }
 
     /**
@@ -190,7 +196,7 @@ class Player extends Model
      * Rename the player.
      *
      * @param  string $new_name
-     * @return mixed
+     * @return $this;
      */
     public function rename($new_name)
     {
@@ -201,18 +207,24 @@ class Player extends Model
 
         $this->player_name = $new_name;
 
-        return Event::fire(new PlayerProfileUpdated($this));
+        event(new PlayerProfileUpdated($this));
+
+        return $this;
     }
 
     /**
      * Set a new owner for the player.
      *
      * @param int $uid
+     *
+     * @return $this
      */
     public function setOwner($uid) {
         $this->update(['uid' => $uid]);
 
-        return Event::fire(new PlayerProfileUpdated($this));
+        event(new PlayerProfileUpdated($this));
+
+        return $this;
     }
 
     /**
diff --git a/resources/assets/src/js/__tests__/user.test.js b/resources/assets/src/js/__tests__/user.test.js
index c65929f1..8e4d5e47 100644
--- a/resources/assets/src/js/__tests__/user.test.js
+++ b/resources/assets/src/js/__tests__/user.test.js
@@ -404,7 +404,7 @@ describe('tests for "player" module', () => {
     expect($('#1').hasClass('player-selected')).toBe(false);
     expect($('#2').hasClass('player-selected')).toBe(true);
     expect(fetch).toBeCalledWith({
-      type: 'POST',
+      type: 'GET',
       url: 'user/player/show',
       dataType: 'json',
       data: { pid: '2' }
diff --git a/resources/assets/src/js/user/player.js b/resources/assets/src/js/user/player.js
index 406818cb..1409371e 100644
--- a/resources/assets/src/js/user/player.js
+++ b/resources/assets/src/js/user/player.js
@@ -26,7 +26,7 @@ $('body').on('click', '.player', function () {
 async function showPlayerTexturePreview(pid) {
     try {
         const result = await fetch({
-            type: 'POST',
+            type: 'GET',
             url: url('user/player/show'),
             dataType: 'json',
             data: { pid: pid }
diff --git a/routes/web.php b/routes/web.php
index c4ef9be3..43d95ed6 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -55,10 +55,9 @@ Route::group(['middleware' => 'auth', 'prefix' => 'user'], function ()
     // Player
     Route::any ('/player',               'PlayerController@index');
     Route::post('/player/add',           'PlayerController@add');
-    Route::post('/player/show',          'PlayerController@show');
+    Route::any ('/player/show',          'PlayerController@show');
     Route::post('/player/preference',    'PlayerController@setPreference');
     Route::post('/player/set',           'PlayerController@setTexture');
-    Route::post('/player/texture',       'PlayerController@changeTexture');
     Route::post('/player/texture/clear', 'PlayerController@clearTexture');
     Route::post('/player/rename',        'PlayerController@rename');
     Route::post('/player/delete',        'PlayerController@delete');
diff --git a/tests/PlayerControllerTest.php b/tests/PlayerControllerTest.php
new file mode 100644
index 00000000..dcfd40b3
--- /dev/null
+++ b/tests/PlayerControllerTest.php
@@ -0,0 +1,318 @@
+<?php
+
+use App\Events;
+use App\Models\User;
+use App\Models\Player;
+use App\Models\Texture;
+use Illuminate\Foundation\Testing\WithoutMiddleware;
+use Illuminate\Foundation\Testing\DatabaseMigrations;
+use Illuminate\Foundation\Testing\DatabaseTransactions;
+
+class PlayerControllerTest extends TestCase
+{
+    use DatabaseTransactions;
+
+    protected function setUp()
+    {
+        parent::setUp();
+        return $this->actAs('normal');
+    }
+
+    public function testIndex()
+    {
+        $this->visit('/user/player?pid=5')
+            ->assertViewHas('players')
+            ->assertViewHas('user');
+    }
+
+    public function testAdd()
+    {
+        // Without player name
+        $this->post('/user/player/add', [], ['X-Requested-With' => 'XMLHttpRequest'])
+            ->seeJson([
+                'errno' => 1,
+                'msg' => trans('validation.required', ['attribute' => 'Player Name'])
+            ]);
+
+        // Not allowed to use Chinese characters
+        option(['allow_chinese_playername' => false]);
+        $this->post('/user/player/add', [
+            'player_name' => '角色名'
+        ], ['X-Requested-With' => 'XMLHttpRequest'])
+            ->seeJson([
+                'errno' => 1,
+                'msg' => trans('validation.playername', ['attribute' => 'Player Name'])
+            ]);
+
+        // Lack of score
+        $user = factory(User::class)->create(['score' => 0]);
+        $this->actAs($user)
+            ->post('/user/player/add', ['player_name' => 'no_score'])
+            ->seeJson([
+                'errno' => 7,
+                'msg' => trans('user.player.add.lack-score')
+            ]);
+        $this->expectsEvents(Events\CheckPlayerExists::class);
+
+        // Allowed to use Chinese characters
+        option(['allow_chinese_playername' => true]);
+        $user = factory(User::class)->create();
+        $score = $user->score;
+        $this->actAs($user)
+            ->post('/user/player/add', [
+            'player_name' => '角色名'
+        ])->seeJson([
+            'errno' => 0,
+            'msg' => trans('user.player.add.success', ['name' => '角色名'])
+        ]);
+        $this->expectsEvents(Events\PlayerWillBeAdded::class);
+        $this->expectsEvents(Events\PlayerWasAdded::class);
+        $player = Player::where('player_name', '角色名')->first();
+        $this->assertNotNull($player);
+        $this->assertEquals($user->uid, $player->uid);
+        $this->assertEquals('角色名', $player->player_name);
+        $this->assertEquals('default', $player->preference);
+        $this->assertEquals(
+            $score - option('score_per_player'),
+            User::find($user->uid)->score
+        );
+
+        // Add a existed player
+        $this->post('/user/player/add', ['player_name' => '角色名'])
+            ->seeJson([
+                'errno' => 6,
+                'msg' => trans('user.player.add.repeated')
+            ]);
+    }
+
+    public function testDelete()
+    {
+        $player = factory(Player::class)->create();
+        $user = User::find($player->uid);
+        $this->expectsEvents(Events\PlayerWillBeDeleted::class);
+        $this->actAs($user)
+            ->post('/user/player/delete', ['pid' => $player->pid])
+            ->seeJson([
+                'errno' => 0,
+                'msg' => trans('user.player.delete.success', ['name' => $player->player_name])
+            ]);
+        $this->assertNull(Player::find($player->pid));
+        $this->expectsEvents(Events\PlayerWasDeleted::class);
+        $this->assertEquals(
+            $user->score + option('score_per_player'),
+            User::find($user->uid)->score
+        );
+
+        // No returning score
+        option(['return_score' => false]);
+        $player = factory(Player::class)->create();
+        $user = User::find($player->uid);
+        $this->actAs($user)
+            ->post('/user/player/delete', ['pid' => $player->pid])
+            ->seeJson([
+                'errno' => 0,
+                'msg' => trans('user.player.delete.success', ['name' => $player->player_name])
+            ]);
+        $this->assertEquals(
+            $user->score,
+            User::find($user->uid)->score
+        );
+    }
+
+    public function testShow()
+    {
+        $player = factory(Player::class)->create(['last_modified' => '2017-11-11 22:51:00']);
+        $this->get('/user/player/show?pid='.$player->pid)
+            ->seeJson($player->toArray());
+    }
+
+    public function testRename()
+    {
+        $player = factory(Player::class)->create();
+        $user = User::find($player->uid);
+
+        // Without new player name
+        $this->actAs($user)
+            ->post('/user/player/rename', [
+                'pid' => $player->pid,
+            ], [
+                'X-Requested-With' => 'XMLHttpRequest'
+            ])->seeJson([
+                'errno' => 1,
+                'msg' => trans('validation.required', ['attribute' => 'Player Name'])
+            ]);
+
+        // Chinese characters are not allowed
+        option(['allow_chinese_playername' => false]);
+        $this->post('/user/player/rename', [
+            'pid' => $player->pid,
+            'new_player_name' => '角色名'
+        ], [
+            'X-Requested-With' => 'XMLHttpRequest'
+        ])->seeJson([
+            'errno' => 1,
+            'msg' => trans('validation.playername', ['attribute' => 'Player Name'])
+        ]);
+
+        // Other invalid characters
+        option(['allow_chinese_playername' => true]);
+        $this->post('/user/player/rename', [
+            'pid' => $player->pid,
+            'new_player_name' => '\\'
+        ], [
+            'X-Requested-With' => 'XMLHttpRequest'
+        ])->seeJson([
+            'errno' => 1,
+            'msg' => trans('validation.pname_chinese', ['attribute' => 'Player Name'])
+        ]);
+
+        // Use a duplicated player name
+        $name = factory(Player::class)->create()->player_name;
+        $this->post('/user/player/rename', [
+            'pid' => $player->pid,
+            'new_player_name' => $name
+        ])->seeJson([
+            'errno' => 6,
+            'msg' => trans('user.player.rename.repeated')
+        ]);
+
+        // Success
+        $this->expectsEvents(Events\PlayerProfileUpdated::class);
+        $this->post('/user/player/rename', [
+            'pid' => $player->pid,
+            'new_player_name' => 'new_name'
+        ])->seeJson([
+            'errno' => 0,
+            'msg' => trans(
+                'user.player.rename.success',
+                ['old' => $player->player_name, 'new' => 'new_name']
+            )
+        ]);
+    }
+
+    public function testSetTexture()
+    {
+        $player = factory(Player::class)->create();
+        $user = User::find($player->uid);
+        $steve = factory(Texture::class)->create();
+        $alex = factory(Texture::class, 'alex')->create();
+        $cape = factory(Texture::class, 'cape')->create();
+
+        // Set a not-existed texture
+        $this->actAs($user)
+            ->post('/user/player/set', [
+                'pid' => $player->pid,
+                'tid' => ['steve' => -1]
+            ])->seeJson([
+                'errno' => 6,
+                'msg' => trans('skinlib.un-existent')
+            ]);
+
+        $this->post('/user/player/set', [
+            'pid' => $player->pid,
+            'tid' => ['steve' => $steve->tid]
+        ])->seeJson([
+            'errno' => 0,
+            'msg' => trans('user.player.set.success', ['name' => $player->player_name])
+        ]);
+        $this->expectsEvents(Events\PlayerProfileUpdated::class);
+        $this->assertEquals($steve->tid, Player::find($player->pid)->tid_steve);
+
+        $this->post('/user/player/set', [
+            'pid' => $player->pid,
+            'tid' => ['alex' => $alex->tid]
+        ])->seeJson([
+            'errno' => 0,
+            'msg' => trans('user.player.set.success', ['name' => $player->player_name])
+        ]);
+        $this->assertEquals($alex->tid, Player::find($player->pid)->tid_alex);
+
+        $this->post('/user/player/set', [
+            'pid' => $player->pid,
+            'tid' => ['cape' => $cape->tid]
+        ])->seeJson([
+            'errno' => 0,
+            'msg' => trans('user.player.set.success', ['name' => $player->player_name])
+        ]);
+        $this->assertEquals($cape->tid, Player::find($player->pid)->tid_cape);
+
+        // Invalid texture type is acceptable
+        $this->post('/user/player/set', [
+            'pid' => $player->pid,
+            'tid' => ['nope' => $steve->tid]     // TID must be valid
+        ])->seeJson([
+            'errno' => 0,
+            'msg' => trans('user.player.set.success', ['name' => $player->player_name])
+        ]);
+    }
+
+    public function testClearTexture()
+    {
+        $player = factory(Player::class)->create();
+        $user = User::find($player->uid);
+
+        $player->setTexture([
+            'tid_steve' => 1,
+            'tid_alex' => 2,
+            'tid_cape' => 3
+        ]);
+        $player = Player::find($player->pid);
+
+        $this->expectsEvents(Events\PlayerProfileUpdated::class);
+        $this->actAs($user)
+            ->post('/user/player/texture/clear', [
+                'pid' => $player->pid,
+                'steve' => 1,    // "1" stands for "true"
+                'alex' => 1,
+                'cape' => 1,
+                'nope' => 1,     // Invalid texture type is acceptable
+            ])->seeJson([
+                'errno' => 0,
+                'msg' => trans('user.player.clear.success', ['name' => $player->player_name])
+            ]);
+        $this->assertEquals(0, Player::find($player->pid)->tid_steve);
+        $this->assertEquals(0, Player::find($player->pid)->tid_alex);
+        $this->assertEquals(0, Player::find($player->pid)->tid_cape);
+    }
+
+    public function testSetPreference()
+    {
+        // Without `preference` field
+        $player = factory(Player::class)->create();
+        $this->post('/user/player/preference', [
+            'pid' => $player->pid
+        ], [
+            'X-Requested-With' => 'XMLHttpRequest'
+        ])->seeJson([
+            'errno' => 1,
+            'msg' => trans('validation.required', ['attribute' => 'preference'])
+        ]);
+
+        // value of `preference` is invalid
+        $this->post('/user/player/preference', [
+            'pid' => $player->pid,
+            'preference' => 'steve'
+        ], [
+            'X-Requested-With' => 'XMLHttpRequest'
+        ])->seeJson([
+            'errno' => 1,
+            'msg' => trans('validation.preference', ['attribute' => 'preference'])
+        ]);
+
+        // Success
+        $this->expectsEvents(Events\PlayerProfileUpdated::class);
+        $this->post('/user/player/preference', [
+            'pid' => $player->pid,
+            'preference' => 'slim'
+        ], [
+            'X-Requested-With' => 'XMLHttpRequest'
+        ])->seeJson([
+            'errno' => 0,
+            'msg' => trans(
+                'user.player.preference.success',
+                ['name' => $player->player_name, 'preference' => 'slim']
+            )
+        ]);
+        $this->assertEquals('slim', Player::find($player->pid)->preference);
+    }
+}