From f12b750fe30bd7a19433a305bf8751b83fa7f0ad Mon Sep 17 00:00:00 2001
From: Swordsteel <swordsteel@gmail.com>
Date: Fri, 7 Feb 2025 11:08:19 +0100
Subject: [PATCH] add assertion to compare to file content.

---
 src/main/kotlin/ltd/hlaeja/test/Assertion.kt | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 src/main/kotlin/ltd/hlaeja/test/Assertion.kt

diff --git a/src/main/kotlin/ltd/hlaeja/test/Assertion.kt b/src/main/kotlin/ltd/hlaeja/test/Assertion.kt
new file mode 100644
index 0000000..f975b26
--- /dev/null
+++ b/src/main/kotlin/ltd/hlaeja/test/Assertion.kt
@@ -0,0 +1,15 @@
+package ltd.hlaeja.test
+
+import org.assertj.core.api.AbstractStringAssert
+
+@Suppress("unused")
+fun <SELF : AbstractStringAssert<SELF>?> AbstractStringAssert<SELF>.compareToFile(
+    file: String,
+): AbstractStringAssert<SELF> = this::class.java.classLoader
+    .getResourceAsStream(file)
+    ?.bufferedReader()
+    ?.readText()
+    ?.let { this.isEqualTo(it) }
+    ?: throw UnsupportedOperationException(
+        "Attempted to compare assertion object to context of a file but expected file was not found: $file",
+    )