test(config): 补充一部分 AppPaths 的单元测试项目.

补充了针对 AppPaths.defaultInitializer() 和 AppPaths.DATA_ROOT 的单元测试项.
其他的有待补充.

scalabot-app/build.gradle.kts

@@ -35,6 +35,7 @@ dependencies {
     implementation("io.prometheus:simpleclient_httpserver:0.15.0")
 
     testImplementation(kotlin("test"))
+    testImplementation("io.mockk:mockk:1.12.3")
 }
 
 tasks.test {

scalabot-app/src/test/kotlin/AppConfigTest.kt

@@ -1,12 +1,19 @@
 package net.lamgc.scalabot
 
 import com.google.gson.Gson
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.verify
+import org.junit.jupiter.api.io.TempDir
+import java.io.File
 import java.util.*
 import kotlin.math.abs
 import kotlin.test.Test
 import kotlin.test.assertEquals
+import kotlin.test.assertNotNull
+import kotlin.test.assertTrue
 
-class BotAccountTest {
+internal class BotAccountTest {
 
     @Test
     fun deserializerTest() {
@@ -29,3 +36,90 @@ class BotAccountTest {
 
 }
 
+internal class AppPathsTest {
+
+    @Test
+    fun `Data root path priority`() {
+        System.setProperty("bot.path.data", "A")
+
+        assertEquals("A", AppPaths.DATA_ROOT.file.path, "`DATA_ROOT`没有优先返回 Property 的值.")
+        System.getProperties().remove("bot.path.data")
+        if (System.getenv("BOT_DATA_PATH") != null) {
+            assertEquals(
+                System.getenv("BOT_DATA_PATH"), AppPaths.DATA_ROOT.file.path,
+                "`DATA_ROOT`没有返回 env 的值."
+            )
+        } else {
+            assertEquals(
+                System.getProperty("user.dir"), AppPaths.DATA_ROOT.file.path,
+                "`DATA_ROOT`没有返回 `user.dir` 的值."
+            )
+            val userDir = System.getProperty("user.dir")
+            System.getProperties().remove("user.dir")
+            assertEquals(".", AppPaths.DATA_ROOT.file.path, "`DATA_ROOT`没有返回 `.`(当前目录).")
+            System.setProperty("user.dir", userDir)
+            assertNotNull(System.getProperty("user.dir"), "环境还原失败!")
+        }
+    }
+
+    @Test
+    fun `default initializer`(@TempDir testDir: File) {
+        val dirPath = "${testDir.canonicalPath}/directory/"
+        val dirFile = File(dirPath)
+        mockk<AppPaths> {
+            every { file }.returns(File(dirPath))
+            every { path }.returns(dirPath)
+            every { initial() }.answers {
+                Class.forName("net.lamgc.scalabot.AppConfigsKt")
+                    .getDeclaredMethod("defaultInitializer", AppPaths::class.java)
+                    .apply { isAccessible = true }
+                    .invoke(null, this@mockk)
+            }
+        }.initial()
+        assertTrue(dirFile.exists() && dirFile.isDirectory, "默认初始器未正常初始化【文件夹】.")
+
+        File(testDir, "test.txt").apply {
+            mockk<AppPaths> {
+                every { file }.returns(this@apply)
+                every { path }.returns(this@apply.canonicalPath)
+                every { initial() }.answers {
+                    Class.forName("net.lamgc.scalabot.AppConfigsKt")
+                        .getDeclaredMethod("defaultInitializer", AppPaths::class.java)
+                        .apply { isAccessible = true }
+                        .invoke(null, this@mockk)
+                }
+            }.initial()
+            assertTrue(this@apply.exists() && this@apply.isFile, "默认初始器未正常初始化【文件】.")
+        }
+
+        val alreadyExistsFile = File("${testDir.canonicalPath}/alreadyExists.txt").apply {
+            if (!exists()) {
+                createNewFile()
+            }
+        }
+        assertTrue(alreadyExistsFile.exists(), "文件状态与预期不符.")
+        mockk<File> {
+            every { exists() }.returns(true)
+            every { canonicalPath }.answers { alreadyExistsFile.canonicalPath }
+            every { createNewFile() }.answers { alreadyExistsFile.createNewFile() }
+            every { mkdirs() }.answers { alreadyExistsFile.mkdirs() }
+            every { mkdir() }.answers { alreadyExistsFile.mkdir() }
+        }.apply {
+            mockk<AppPaths> {
+                every { file }.returns(this@apply)
+                every { path }.returns(this@apply.canonicalPath)
+                every { initial() }.answers {
+                    Class.forName("net.lamgc.scalabot.AppConfigsKt")
+                        .getDeclaredMethod("defaultInitializer", AppPaths::class.java)
+                        .apply { isAccessible = true }
+                        .invoke(null, this@mockk)
+                }
+            }.initial()
+            verify(exactly = 0) { createNewFile() }
+            verify(exactly = 0) { mkdir() }
+            verify(exactly = 0) { mkdirs() }
+        }
+    }
+
+}
+