Tested AuthConfig withEnv

src/test/kotlin/org/radarbase/jersey/auth/AuthConfigTest.kt

@@ -0,0 +1,53 @@
+package org.radarbase.jersey.auth
+
+import org.hamcrest.MatcherAssert.assertThat
+import org.hamcrest.Matchers.equalTo
+import org.hamcrest.Matchers.not
+import org.junit.jupiter.api.Test
+import java.util.*
+
+internal class AuthConfigTest {
+    @Test
+    fun testEnv() {
+        val config = AuthConfig(jwtResourceName = "res_test")
+
+        setEnv(mapOf(
+                "AUTH_KEYSTORE_PASSWORD" to "test",
+                "MANAGEMENT_PORTAL_CLIENT_ID" to "clId",
+                "MANAGEMENT_PORTAL_CLIENT_SECRET" to "clSecret",
+        ))
+        val newConfig = config.withEnv()
+        assertThat(newConfig, not(equalTo(config)))
+        assertThat(newConfig, equalTo(
+                config.copy(
+                        managementPortal = config.managementPortal.copy(
+                                clientId = "clId",
+                                clientSecret = "clSecret",
+                        ),
+                        jwtKeystorePassword = "test",
+                )))
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    @Throws(Exception::class)
+    fun setEnv(newenv: Map<String, String>) {
+        try {
+            val processEnvironmentClass = Class.forName("java.lang.ProcessEnvironment")
+            processEnvironmentClass.putAll(null, "theEnvironment", newenv)
+            processEnvironmentClass.putAll(null, "theCaseInsensitiveEnvironment", newenv)
+        } catch (e: NoSuchFieldException) {
+            Collections::class.java.declaredClasses
+                    .filter { "java.util.Collections\$UnmodifiableMap" == it.name }
+                    .forEach { it.putAll(System.getenv(), "m", newenv) }
+        }
+    }
+
+    @Suppress("UNCHECKED_CAST")
+    private fun Class<*>.putAll(obj: Any?, fieldName: String, map: Map<String, String>) {
+        getDeclaredField(fieldName)
+                .apply { isAccessible = true }
+                .let { it.get(obj) as MutableMap<String, String> }
+                .putAll(map)
+
+    }
+}