tests: add tests for RemoteFeatureConfigCheckBuilder

libs/processors/src/test/kotlin/org/wordpress/android/processor/RemoteFeatureConfigCheckBuilderTest.kt

@@ -0,0 +1,53 @@
+package org.wordpress.android.processor
+
+import com.squareup.kotlinpoet.ClassName
+import org.assertj.core.api.Assertions
+import org.junit.Test
+
+class RemoteFeatureConfigCheckBuilderTest {
+
+    @Test
+    fun `given feature classes, when building config check, then generate the correct checks`() {
+        // given
+        val classA = "customClassA"
+        val classB = "customClassB"
+        val features = listOf(
+            ClassName("org.wordpress", listOf(classA)),
+            ClassName("org.wordpress", listOf(classB))
+        )
+
+        // when
+        val sut = RemoteFeatureConfigCheckBuilder(features)
+
+        // then
+        Assertions.assertThat(sut.getContent().toString()).isEqualTo(
+            """
+            // Automatically generated file. DO NOT MODIFY
+            package org.wordpress.android.util.config
+
+            import org.wordpress.$classA
+            import org.wordpress.$classB
+
+            class RemoteFeatureConfigCheck(
+                val appConfig: AppConfig
+            ) {
+                val $classA: $classA = $classA(appConfig)
+
+                val $classB: $classB = $classB(appConfig)
+
+                fun checkRemoteFields() {
+                    if ($classA.remoteField == null) {
+                        throw IllegalArgumentException(""${'"'}org.wordpress.$classA needs to define
+                            remoteField""${'"'})
+                    }
+                    if ($classB.remoteField == null) {
+                        throw IllegalArgumentException(""${'"'}org.wordpress.$classB needs to define
+                            remoteField""${'"'})
+                    }
+                }
+            }
+
+        """.trimIndent()
+        )
+    }
+}