Add compilation tests

Author: segeljakt

.gitignore

@@ -2,6 +2,7 @@
 # will have compiled files and executables
 debug/
 target/
+wip/
 
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html

rust/Cargo.toml

@@ -25,6 +25,7 @@ rand               = "0.7.3"
 
 [dev-dependencies]
 criterion          = "0.3.3"
+trybuild           = "1.0.30"
 
 [profile.dev]
 opt-level          = 0

rust/tests/trybuild.rs

@@ -0,0 +1,7 @@
+/// This is a test-suite for testing if compilation fails or succeeds
+#[test]
+fn trybuild() {
+    let t = trybuild::TestCases::new();
+    t.compile_fail("tests/trybuild_*.fail");
+    t.pass("tests/trybuild_*.pass");
+}

rust/tests/trybuild_soe_max.fail

@@ -0,0 +1,8 @@
+mod common;
+use common::*;
+use swag::soe::*;
+
+/// Should not compile since Max is not invertible
+fn main() {
+    SoE::<Int, Max>::new();
+}

rust/tests/trybuild_soe_max.stderr

@@ -0,0 +1,19 @@
+error[E0599]: no function or associated item named `new` found for struct `swag::soe::SoE<common::Int, common::Max>` in the current scope
+ --> $DIR/trybuild_soe_max.fail:7:22
+  |
+7 |     SoE::<Int, Max>::new();
+  |                      ^^^ function or associated item not found in `swag::soe::SoE<common::Int, common::Max>`
+
+error[E0277]: the trait bound `common::Int: alga::general::one_operator::AbstractGroup<common::Max>` is not satisfied
+  --> $DIR/trybuild_soe_max.fail:7:5
+   |
+7  |     SoE::<Int, Max>::new();
+   |     ^^^^^^^^^^^^^^^^^^^^ the trait `alga::general::one_operator::AbstractGroup<common::Max>` is not implemented for `common::Int`
+   |
+  ::: $WORKSPACE/src/soe/mod.rs:10:12
+   |
+10 |     Value: AbstractGroup<BinOp> + Clone,
+   |            -------------------- required by this bound in `swag::soe::SoE`
+   |
+   = help: the following implementations were found:
+             <common::Int as alga::general::one_operator::AbstractGroup<common::Sum>>

rust/tests/trybuild_soe_sum.pass

@@ -0,0 +1,9 @@
+mod common;
+use common::*;
+use swag::FifoWindow;
+use swag::soe::*;
+
+/// Should compile since Sum is invertible
+fn main() {
+    SoE::<Int, Sum>::new();
+}