add load tests from ingested files

crates/compiler/load_internal/tests/fixtures/build/interface_with_deps/IngestedFile.roc

@@ -0,0 +1,5 @@
+interface IngestedFile
+    exposes [str]
+    imports ["IngestedFile.roc" as foo : Str]
+
+str = foo

crates/compiler/load_internal/tests/fixtures/build/interface_with_deps/IngestedFileBytes.roc

@@ -0,0 +1,5 @@
+interface IngestedFileBytes
+    exposes [str]
+    imports ["IngestedFileBytes.roc" as foo : List U8]
+
+str = Str.fromUtf8 foo |> Result.withDefault ""

crates/compiler/load_internal/tests/fixtures/build/no_deps/MissingIngestedFile.roc

@@ -0,0 +1,8 @@
+interface MissingIngestedFile
+    exposes [unit]
+    imports ["ThisFileIsMissing" as data: List U8]
+
+Unit : [Unit]
+
+unit : Unit
+unit = Unit

crates/compiler/load_internal/tests/test_load.rs

@@ -572,6 +572,34 @@ fn imported_dep_regression() {
     );
 }
 
+#[test]
+fn ingested_file() {
+    let subs_by_module = Default::default();
+    let loaded_module = load_fixture("interface_with_deps", "IngestedFile", subs_by_module);
+
+    expect_types(
+        loaded_module,
+        hashmap! {
+            "foo" => "Str",
+            "str" => "Str",
+        },
+    );
+}
+
+#[test]
+fn ingested_file_bytes() {
+    let subs_by_module = Default::default();
+    let loaded_module = load_fixture("interface_with_deps", "IngestedFileBytes", subs_by_module);
+
+    expect_types(
+        loaded_module,
+        hashmap! {
+            "foo" => "List U8",
+            "str" => "Str",
+        },
+    );
+}
+
 #[test]
 fn parse_problem() {
     let modules = vec![(
@@ -639,6 +667,20 @@ fn imported_file_not_found() {
     );
 }
 
+#[test]
+#[should_panic(expected = "FILE NOT FOUND")]
+fn ingested_file_not_found() {
+    let subs_by_module = Default::default();
+    let loaded_module = load_fixture("no_deps", "MissingIngestedFile", subs_by_module);
+
+    expect_types(
+        loaded_module,
+        hashmap! {
+            "str" => "Str",
+        },
+    );
+}
+
 #[test]
 fn platform_does_not_exist() {
     let modules = vec![(