Merge pull request #82 from NordSecurity/null_string_test

Add null to empty string configuration test

dotnet-tests/UniffiCS.BindingTests/TestNullToEmptyString.cs

@@ -0,0 +1,17 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+using uniffi.null_to_empty_string;
+
+namespace UniffiCS.BindingTests;
+
+public class TestNullToEmptyString
+{
+    [Fact]
+    public void NullToEmptyStringWorks()
+    {
+        Assert.Equal("hello", LibGreeter.HelloWorld("hello"));
+        Assert.Equal("", LibGreeter.HelloWorld(null));
+    }
+}

fixtures/Cargo.toml

@@ -10,6 +10,7 @@ crate-type = ["cdylib", "lib"]
 
 [dependencies]
 global-methods-class-name = { path = "global-methods-class-name" }
+null-to-empty-string = { path = "null-to-empty-string" }
 uniffi-cs-custom-types-builtin = { path = "custom-types-builtin" }
 uniffi-cs-disposable-fixture = { path = "disposable" }
 uniffi-cs-optional-parameters-fixture = { path = "optional-parameters" }

fixtures/null-to-empty-string/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "null-to-empty-string"
+version = "1.0.0"
+edition = "2021"
+publish = false
+
+[lib]
+crate-type = ["lib", "cdylib"]
+name = "null_to_empty_string"
+
+[dependencies]
+once_cell = "1.12"
+thiserror = "1.0"
+uniffi = {path = "../../3rd-party/uniffi-rs/uniffi", features=["build"]}
+uniffi_macros = {path = "../../3rd-party/uniffi-rs/uniffi_macros"}
+
+[build-dependencies]
+uniffi = {path = "../../3rd-party/uniffi-rs/uniffi", features=["bindgen-tests"]}

fixtures/null-to-empty-string/build.rs

@@ -0,0 +1,7 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+fn main() {
+    uniffi::generate_scaffolding("./src/null_to_empty_string.udl").unwrap();
+}

fixtures/null-to-empty-string/src/lib.rs

@@ -0,0 +1,9 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+pub fn hello_world(greet: String) -> String {
+    return greet;
+}
+
+uniffi::include_scaffolding!("null_to_empty_string");

fixtures/null-to-empty-string/src/null_to_empty_string.udl

@@ -0,0 +1,7 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+namespace null_to_empty_string {
+    string hello_world(string greet);
+};

fixtures/null-to-empty-string/uniffi.toml

@@ -0,0 +1,4 @@
+[bindings.csharp]
+cdylib_name = "uniffi_fixtures"
+global_methods_class_name = "LibGreeter"
+null_string_to_empty = true

fixtures/src/lib.rs

@@ -18,6 +18,7 @@ mod uniffi_fixtures {
     uniffi_trait_methods::uniffi_reexport_scaffolding!();
 
     global_methods_class_name::uniffi_reexport_scaffolding!();
+    null_to_empty_string::uniffi_reexport_scaffolding!();
     uniffi_cs_custom_types_builtin::uniffi_reexport_scaffolding!();
     uniffi_cs_disposable::uniffi_reexport_scaffolding!();
     uniffi_cs_optional_parameters::uniffi_reexport_scaffolding!();