test: initial tests for config loader (#45)

Author: devshawn

src/test/groovy/com/devshawn/kafka/gitops/config/KafkaGitopsConfigLoaderSpec.groovy

@@ -0,0 +1,49 @@
+package com.devshawn.kafka.gitops.config
+
+
+import org.apache.kafka.common.config.SaslConfigs
+import org.junit.ClassRule
+import org.junit.contrib.java.lang.system.EnvironmentVariables
+import spock.lang.Shared
+import spock.lang.Specification
+
+class KafkaGitopsConfigLoaderSpec extends Specification {
+
+    @Shared
+    @ClassRule
+    EnvironmentVariables environmentVariables
+
+    void setupSpec() {
+        environmentVariables.set("KAFKA_BOOTSTRAP_SERVERS", "localhost:9092")
+        environmentVariables.set("KAFKA_SASL_MECHANISM", "PLAIN")
+        environmentVariables.set("KAFKA_SECURITY_PROTOCOL", "SASL_PLAINTEXT")
+    }
+
+    void 'test username and password shortcut'() {
+        setup:
+        environmentVariables.set("KAFKA_SASL_JAAS_USERNAME", "test")
+        environmentVariables.set("KAFKA_SASL_JAAS_PASSWORD", "test-secret")
+
+        when:
+        KafkaGitopsConfig config = KafkaGitopsConfigLoader.load()
+
+        then:
+        config
+        config.config.get(SaslConfigs.SASL_JAAS_CONFIG) == "org.apache.kafka.common.security.plain.PlainLoginModule required username=\"test\" password=\"test-secret\";"
+    }
+
+    void 'test escaping username and password shortcut'() {
+        setup:
+        environmentVariables.set("KAFKA_SASL_JAAS_USERNAME", "te\"st")
+        environmentVariables.set("KAFKA_SASL_JAAS_PASSWORD", "te\"st-secr\"et")
+
+        when:
+        KafkaGitopsConfig config = KafkaGitopsConfigLoader.load()
+
+        then:
+        config
+        config.config.get(SaslConfigs.SASL_JAAS_CONFIG) == "org.apache.kafka.common.security.plain.PlainLoginModule required username=\"te\\\"st\" password=\"te\\\"st-secr\\\"et\";"
+    }
+
+
+}