Add tests for trailing slashes

core/src/test/kotlin/com/justai/jaicf/core/test/helpers/HttpHelpersTest.kt

@@ -0,0 +1,39 @@
+package com.justai.jaicf.core.test.helpers
+
+import com.justai.jaicf.helpers.http.withTrailingSlash
+import org.junit.jupiter.api.Nested
+import org.junit.jupiter.api.Test
+import kotlin.random.Random
+import kotlin.test.assertEquals
+
+class HttpHelpersTest {
+
+    @Nested
+    inner class TrailingSlashesTest {
+        private val symbols = ('a'..'z') + ('A'..'Z') + ('0'..'9') + arrayOf('/', '\\', ':', '?', '&', '@')
+
+        private fun randomString(len: Int) =
+            (1..len).joinToString("") { symbols.random().toString() }.dropLastWhile { it == '/' }
+
+        private fun nSlashes(len: Int): String =
+            (1..len).joinToString("") { "/" }
+
+
+        @Test
+        fun `Test trailing slash without slashes`() = repeat(100) {
+            val str = randomString(Random.nextInt(0, 100))
+
+            assertEquals("$str/", str.withTrailingSlash())
+            assertEquals(str, str.withTrailingSlash(false))
+        }
+
+        @Test
+        fun `Test trailing slash with slashes`() = repeat(100) {
+            val base = randomString(Random.nextInt(5, 20))
+            val str = base + nSlashes(Random.nextInt(1, 5))
+
+            assertEquals("$base/", str.withTrailingSlash())
+            assertEquals(base, str.withTrailingSlash(false))
+        }
+    }
+}