Add test, bug fix, refactoring

Author: Sdoba16

functional-tests/error-test-cases/cross-wire/lib/b.simf

@@ -0,0 +1,2 @@
+use lib::x::TypeX;
+use lib::y::TypeY;

functional-tests/error-test-cases/cross-wire/lib/c.simf

@@ -0,0 +1,2 @@
+use lib::y::TypeY;
+use lib::x::TypeX;

functional-tests/error-test-cases/cross-wire/lib/x.simf

@@ -0,0 +1 @@
+pub type TypeX = u32;

functional-tests/error-test-cases/cross-wire/lib/y.simf

@@ -0,0 +1 @@
+pub type TypeY = u64;

functional-tests/error-test-cases/cross-wire/main.simf

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+use lib::b::TypeX;
+use lib::c::TypeY;
+
+fn main() {}

functional-tests/error-test-cases/cyclic-dependency/lib/module_a.simf

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+pub use lib::module_b::TypeB;
+pub type TypeA = u32;

functional-tests/error-test-cases/cyclic-dependency/lib/module_b.simf

@@ -0,0 +1,2 @@
+pub use lib::module_a::TypeA;
+pub type TypeB = u32;

functional-tests/error-test-cases/cyclic-dependency/main.simf

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+use lib::module_a::TypeA; 
+
+fn main() {}

functional-tests/error-test-cases/file-not-found/main.simf

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+use lib::module::AssetId;
+
+fn main() {
+    let my_asset: AssetId = 5; 
+}

functional-tests/error-test-cases/global/lib/module.simf

@@ -0,0 +1,2 @@
+pub type AssetId = u32;
+pub fn get_id() -> AssetId { 1 }