From 7f8da417a359c76bd5def896b0bcd159dd3a7acc Mon Sep 17 00:00:00 2001
From: JFronny <git@akbvopenfl1.hopto.org>
Date: Tue, 18 Apr 2023 14:34:04 +0200
Subject: [PATCH] test parseMultiScript

---
 .../jfronny/muscript/compiler/SourceFS.java   |  9 +++++
 .../muscript/test/MultiScriptTest.java        | 39 +++++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 muscript/src/test/java/io/gitlab/jfronny/muscript/test/MultiScriptTest.java

diff --git a/muscript/src/main/java/io/gitlab/jfronny/muscript/compiler/SourceFS.java b/muscript/src/main/java/io/gitlab/jfronny/muscript/compiler/SourceFS.java
index 7c90da4..71b3d90 100644
--- a/muscript/src/main/java/io/gitlab/jfronny/muscript/compiler/SourceFS.java
+++ b/muscript/src/main/java/io/gitlab/jfronny/muscript/compiler/SourceFS.java
@@ -1,5 +1,14 @@
 package io.gitlab.jfronny.muscript.compiler;
 
+import java.util.Map;
+
 public interface SourceFS {
     String read(String file);
+
+    record Immutable(Map<String, String> files) implements SourceFS {
+        @Override
+        public String read(String file) {
+            return files.get(file);
+        }
+    }
 }
diff --git a/muscript/src/test/java/io/gitlab/jfronny/muscript/test/MultiScriptTest.java b/muscript/src/test/java/io/gitlab/jfronny/muscript/test/MultiScriptTest.java
new file mode 100644
index 0000000..66044db
--- /dev/null
+++ b/muscript/src/test/java/io/gitlab/jfronny/muscript/test/MultiScriptTest.java
@@ -0,0 +1,39 @@
+package io.gitlab.jfronny.muscript.test;
+
+import io.gitlab.jfronny.muscript.StandardLib;
+import io.gitlab.jfronny.muscript.compiler.Parser;
+import io.gitlab.jfronny.muscript.compiler.SourceFS;
+import io.gitlab.jfronny.muscript.data.Scope;
+import org.junit.jupiter.api.Test;
+
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class MultiScriptTest {
+    final SourceFS FS = new SourceFS.Immutable(Map.of(
+            "main.mu", """
+                    #include import1.mu
+                    func(4)""",
+            "import1.mu", """
+                    #include import2.mu
+                    func = {c->fn2(c-1, c)}""",
+            "import2.mu", """
+                    #include import3.mu
+                    fn = {a->a}""",
+            "import3.mu", """
+                    #include import2.mu
+                    fn = {a->a*2}
+                    fn2 = {a, b -> fn(a)+b}"""
+    ));
+
+    final Scope scope = StandardLib.createScope()
+            .set("throw", args -> {
+                throw new IllegalArgumentException("No");
+            });
+
+    @Test
+    void simpleMultifile() {
+        assertEquals(7, Parser.parseMultiScript("main.mu", FS).run(scope).asNumber().getValue());
+    }
+}