From f1878133d8af686ce8c27acffe28f26e9dda5165 Mon Sep 17 00:00:00 2001
From: Allan Wang <me@allanwang.ca>
Date: Thu, 7 Mar 2019 04:00:20 -0500
Subject: Add koin test

---
 .../com/pitchedapps/frost/db/DatabaseTest.kt       | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 app/src/androidTest/kotlin/com/pitchedapps/frost/db/DatabaseTest.kt

(limited to 'app/src/androidTest/kotlin/com/pitchedapps/frost/db')

diff --git a/app/src/androidTest/kotlin/com/pitchedapps/frost/db/DatabaseTest.kt b/app/src/androidTest/kotlin/com/pitchedapps/frost/db/DatabaseTest.kt
new file mode 100644
index 00000000..1f1a201b
--- /dev/null
+++ b/app/src/androidTest/kotlin/com/pitchedapps/frost/db/DatabaseTest.kt
@@ -0,0 +1,38 @@
+package com.pitchedapps.frost.db
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.junit.runner.RunWith
+import org.koin.error.NoBeanDefFoundException
+import org.koin.standalone.get
+import org.koin.test.KoinTest
+import kotlin.reflect.KClass
+import kotlin.reflect.full.functions
+import kotlin.test.Test
+import kotlin.test.assertTrue
+
+@RunWith(AndroidJUnit4::class)
+class DatabaseTest : KoinTest {
+
+    inline fun <reified T : Any> hasKoin() = hasKoin(T::class)
+
+    fun <T : Any> hasKoin(klazz: KClass<T>): Boolean =
+        try {
+            get<T>(clazz = klazz)
+            true
+        } catch (e: NoBeanDefFoundException) {
+            false
+        }
+
+    /**
+     * Database and all daos should be loaded as components
+     */
+    @Test
+    fun testKoins() {
+        hasKoin<FrostDatabase>()
+        val members = FrostDatabase::class.java.kotlin.functions.filter { it.name.endsWith("Dao") }
+            .mapNotNull { it.returnType.classifier as? KClass<*> }
+        assertTrue(members.isNotEmpty(), "Failed to find dao interfaces")
+        val missingKoins = (members + FrostDatabase::class).filter { !hasKoin(it) }
+        assertTrue(missingKoins.isEmpty(), "Missing koins: $missingKoins")
+    }
+}
\ No newline at end of file
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