Add LLVM function declarations

1 files changed, 29 insertions, 0 deletions

diff --git a/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerFunctionDeclarationTests.java b/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerFunctionDeclarationTests.java
new file mode 100644
index 00000000..a33e3283
--- /dev/null
+++ b/src/test/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializerFunctionDeclarationTests.java
@@ -0,0 +1,29 @@
+package org.shedlang.compiler.backends.llvm.ir;
+
+import org.junit.jupiter.api.Test;
+import org.shedlang.compiler.backends.llvm.ir.ast.LlvmFunctionDeclaration;
+import org.shedlang.compiler.backends.llvm.ir.ast.LlvmIr;
+import org.shedlang.compiler.backends.llvm.ir.ast.types.LlvmTypes;
+
+import java.util.List;
+
+import static org.shedlang.compiler.backends.llvm.ir.LlvmIrSerializerTesting.serializeToString;
+import static org.zwobble.precisely.AssertThat.assertThat;
+import static org.zwobble.precisely.Matchers.equalTo;
+
+public class LlvmIrSerializerFunctionDeclarationTests {
+    @Test
+    public void canSerializeFunctionDeclaration() {
+        var definition = new LlvmFunctionDeclaration(
+            "f",
+            LlvmTypes.INT_32,
+            List.of(LlvmIr.param(LlvmTypes.INT_64, "x"), LlvmIr.param(LlvmTypes.INT_64, "y"))
+        );
+
+        var result = serializeToString(definition, LlvmIrSerializer::serializeTopLevelEntity);
+
+        assertThat(result, equalTo("""
+            declare i32 @f(i64 %x, i64 %y)
+            """));
+    }
+}