Split middleware-common tests into separate subcrate

Cargo.toml

@@ -35,6 +35,7 @@ wasmer-wasi = { path = "lib/wasi", optional = true }
 wasmer-kernel-loader = { path = "lib/kernel-loader", optional = true }
 wasmer-dev-utils = { path = "lib/dev-utils", optional = true }
 wasmer-wasi-tests = { path = "lib/wasi-tests", optional = true }
+wasmer-middleware-common-tests = { path = "lib/middleware-common-tests", optional = true }
 wasmer-emscripten-tests = { path = "lib/emscripten-tests", optional = true }
 
 [workspace]
@@ -56,6 +57,7 @@ members = [
     "lib/dev-utils",
     "lib/wasi-tests",
     "lib/emscripten-tests",
+    "lib/middleware-common-tests",
     "examples/plugin-for-example"
 ]
 
@@ -75,19 +77,22 @@ fast-tests = []
 backend-cranelift = [
     "wasmer-runtime-core/backend-cranelift",
     "wasmer-runtime/cranelift",
-    "wasmer-middleware-common/clif"
+    "wasmer-middleware-common-tests/clif",
+    "wasmer-wasi-tests/clif"
 ]
 backend-llvm = [
     "wasmer-llvm-backend",
     "wasmer-runtime-core/backend-llvm",
     "wasmer-runtime/llvm",
-    "wasmer-middleware-common/llvm"
+    "wasmer-middleware-common-tests/llvm",
+    "wasmer-wasi-tests/llvm"
 ]
 backend-singlepass = [
     "wasmer-singlepass-backend",
     "wasmer-runtime-core/backend-singlepass",
     "wasmer-runtime/singlepass",
-    "wasmer-middleware-common/singlepass"
+    "wasmer-middleware-common-tests/singlepass",
+    "wasmer-wasi-tests/singlepass"
 ]
 wasi = ["wasmer-wasi"]
 # vfs = ["wasmer-runtime-abi"]

Makefile

@@ -50,13 +50,13 @@ emtests: emtests-unit emtests-singlepass emtests-cranelift emtests-llvm
 
 # Middleware tests
 middleware-singlepass:
-	cargo test --manifest-path lib/middleware-common/Cargo.toml --release --features singlepass
+	cargo test --manifest-path lib/middleware-common-tests/Cargo.toml --release --features singlepass
 
 middleware-cranelift:
-	cargo test --manifest-path lib/middleware-common/Cargo.toml --release --features clif
+	cargo test --manifest-path lib/middleware-common-tests/Cargo.toml --release --features clif
 
 middleware-llvm:
-	cargo test --manifest-path lib/middleware-common/Cargo.toml --release --features llvm
+	cargo test --manifest-path lib/middleware-common-tests/Cargo.toml --release --features llvm
 
 middleware: middleware-singlepass middleware-cranelift middleware-llvm
 
@@ -99,7 +99,7 @@ capi:
 	cargo test -p wasmer-runtime-c-api --release
 
 test-rest: capi
-	cargo test --release --all --exclude wasmer-runtime-c-api --exclude wasmer-emscripten --exclude wasmer-spectests --exclude wasmer-wasi --exclude wasmer-middleware-common --exclude wasmer-singlepass-backend --exclude wasmer-clif-backend --exclude wasmer-llvm-backend --exclude wasmer-wasi-tests --exclude wasmer-emscripten-tests
+	cargo test --release --all --exclude wasmer-runtime-c-api --exclude wasmer-emscripten --exclude wasmer-spectests --exclude wasmer-wasi --exclude wasmer-middleware-common --exclude wasmer-middleware-common-tests --exclude wasmer-singlepass-backend --exclude wasmer-clif-backend --exclude wasmer-llvm-backend --exclude wasmer-wasi-tests --exclude wasmer-emscripten-tests
 
 circleci-clean:
 	@if [ ! -z "${CIRCLE_JOB}" ]; then rm -f /home/circleci/project/target/debug/deps/libcranelift_wasm* && rm -f /Users/distiller/project/target/debug/deps/libcranelift_wasm*; fi;
@@ -178,4 +178,4 @@ publish-release:
 # cargo install cargo-deps
 # must install graphviz for `dot`
 dep-graph:
-	cargo deps --optional-deps --filter wasmer-wasi wasmer-wasi-tests wasmer-kernel-loader wasmer-dev-utils wasmer-llvm-backend wasmer-emscripten wasmer-emscripten-tests wasmer-runtime-core wasmer-runtime wasmer-middleware-common wasmer-singlepass-backend wasmer-clif-backend wasmer --manifest-path Cargo.toml | dot -Tpng > wasmer_depgraph.png
+	cargo deps --optional-deps --filter wasmer-wasi wasmer-wasi-tests wasmer-kernel-loader wasmer-dev-utils wasmer-llvm-backend wasmer-emscripten wasmer-emscripten-tests wasmer-runtime-core wasmer-runtime wasmer-middleware-common wasmer-middleware-common-tests wasmer-singlepass-backend wasmer-clif-backend wasmer --manifest-path Cargo.toml | dot -Tpng > wasmer_depgraph.png

lib/dev-utils/Cargo.toml

@@ -6,6 +6,7 @@ license = "MIT"
 authors = ["The Wasmer Engineering Team <[email protected]>"]
 edition = "2018"
 repository = "https://github.com/wasmerio/wasmer"
+publish = false
 
 [dependencies]
 libc = "0.2.60"

lib/middleware-common-tests/Cargo.toml

@@ -0,0 +1,28 @@
+[package]
+name = "wasmer-middleware-common-tests"
+version = "0.6.0"
+authors = ["The Wasmer Engineering Team <[email protected]>"]
+edition = "2018"
+repository = "https://github.com/wasmerio/wasmer"
+license = "MIT"
+publish = false
+
+[dependencies]
+wasmer-runtime-core = { path = "../runtime-core", version = "0.6.0" }
+wasmer-middleware-common = { path = "../middleware-common", version = "0.6.0" }
+wasmer-clif-backend = { path = "../clif-backend", version = "0.6.0" }
+wasmer-llvm-backend = { path = "../llvm-backend", version = "0.6.0", optional = true }
+wasmer-singlepass-backend = { path = "../singlepass-backend", version = "0.6.0", optional = true }
+
+[features]
+clif = []
+llvm = ["wasmer-llvm-backend"]
+singlepass = ["wasmer-singlepass-backend"]
+
+[dev-dependencies]
+wabt = "0.9.1"
+criterion = "0.2"
+
+[[bench]]
+name = "metering_benchmark"
+harness = false

lib/middleware-common-tests/src/lib.rs

@@ -0,0 +1,152 @@
+#[cfg(all(test, any(feature = "singlepass", feature = "llvm")))]
+mod tests {
+    use wabt::wat2wasm;
+
+    use wasmer_middleware_common::metering::*;
+    use wasmer_runtime_core::codegen::{MiddlewareChain, StreamingCompiler};
+    use wasmer_runtime_core::{backend::Compiler, compile_with, imports, Func};
+
+    #[cfg(feature = "llvm")]
+    fn get_compiler(limit: u64) -> impl Compiler {
+        use wasmer_llvm_backend::ModuleCodeGenerator as LLVMMCG;
+        let c: StreamingCompiler<LLVMMCG, _, _, _, _> = StreamingCompiler::new(move || {
+            let mut chain = MiddlewareChain::new();
+            chain.push(Metering::new(limit));
+            chain
+        });
+        c
+    }
+
+    #[cfg(feature = "singlepass")]
+    fn get_compiler(limit: u64) -> impl Compiler {
+        use wasmer_singlepass_backend::ModuleCodeGenerator as SinglePassMCG;
+        let c: StreamingCompiler<SinglePassMCG, _, _, _, _> = StreamingCompiler::new(move || {
+            let mut chain = MiddlewareChain::new();
+            chain.push(Metering::new(limit));
+            chain
+        });
+        c
+    }
+
+    #[cfg(not(any(feature = "llvm", feature = "clif", feature = "singlepass")))]
+    compile_error!("compiler not specified, activate a compiler via features");
+
+    #[cfg(feature = "clif")]
+    fn get_compiler(_limit: u64) -> impl Compiler {
+        compile_error!("cranelift does not implement metering");
+        use wasmer_clif_backend::CraneliftCompiler;
+        CraneliftCompiler::new()
+    }
+
+    // Assemblyscript
+    // export function add_to(x: i32, y: i32): i32 {
+    //    for(var i = 0; i < x; i++){
+    //      if(i % 1 == 0){
+    //        y += i;
+    //      } else {
+    //        y *= i
+    //      }
+    //    }
+    //    return y;
+    // }
+    static WAT: &'static str = r#"
+        (module
+          (type $t0 (func (param i32 i32) (result i32)))
+          (type $t1 (func))
+          (func $add_to (export "add_to") (type $t0) (param $p0 i32) (param $p1 i32) (result i32)
+            (local $l0 i32)
+            block $B0
+              i32.const 0
+              set_local $l0
+              loop $L1
+                get_local $l0
+                get_local $p0
+                i32.lt_s
+                i32.eqz
+                br_if $B0
+                get_local $l0
+                i32.const 1
+                i32.rem_s
+                i32.const 0
+                i32.eq
+                if $I2
+                  get_local $p1
+                  get_local $l0
+                  i32.add
+                  set_local $p1
+                else
+                  get_local $p1
+                  get_local $l0
+                  i32.mul
+                  set_local $p1
+                end
+                get_local $l0
+                i32.const 1
+                i32.add
+                set_local $l0
+                br $L1
+                unreachable
+              end
+              unreachable
+            end
+            get_local $p1)
+          (func $f1 (type $t1))
+          (table $table (export "table") 1 anyfunc)
+          (memory $memory (export "memory") 0)
+          (global $g0 i32 (i32.const 8))
+          (elem (i32.const 0) $f1))
+        "#;
+
+    #[test]
+    fn test_points_reduced_after_call() {
+        let wasm_binary = wat2wasm(WAT).unwrap();
+
+        let limit = 100u64;
+
+        let module = compile_with(&wasm_binary, &get_compiler(limit)).unwrap();
+
+        let import_object = imports! {};
+        let mut instance = module.instantiate(&import_object).unwrap();
+
+        set_points_used(&mut instance, 0u64);
+
+        let add_to: Func<(i32, i32), i32> = instance.func("add_to").unwrap();
+        let value = add_to.call(3, 4).unwrap();
+
+        // verify it returns the correct value
+        assert_eq!(value, 7);
+
+        // verify it used the correct number of points
+        assert_eq!(get_points_used(&instance), 74);
+    }
+
+    #[test]
+    fn test_traps_after_costly_call() {
+        use wasmer_runtime_core::error::RuntimeError;
+        let wasm_binary = wat2wasm(WAT).unwrap();
+
+        let limit = 100u64;
+
+        let module = compile_with(&wasm_binary, &get_compiler(limit)).unwrap();
+
+        let import_object = imports! {};
+        let mut instance = module.instantiate(&import_object).unwrap();
+
+        set_points_used(&mut instance, 0u64);
+
+        let add_to: Func<(i32, i32), i32> = instance.func("add_to").unwrap();
+        let result = add_to.call(10_000_000, 4);
+
+        let err = result.unwrap_err();
+        match err {
+            RuntimeError::Error { data } => {
+                assert!(data.downcast_ref::<ExecutionLimitExceededError>().is_some());
+            }
+            _ => unreachable!(),
+        }
+
+        // verify it used the correct number of points
+        assert_eq!(get_points_used(&instance), 109); // Used points will be slightly more than `limit` because of the way we do gas checking.
+    }
+
+}

lib/middleware-common/Cargo.toml

@@ -9,19 +9,3 @@ edition = "2018"
 
 [dependencies]
 wasmer-runtime-core = { path = "../runtime-core" }
-wasmer-clif-backend = { path = "../clif-backend", version = "0.6.0" }
-wasmer-llvm-backend = { path = "../llvm-backend", version = "0.6.0", optional = true }
-wasmer-singlepass-backend = { path = "../singlepass-backend", version = "0.6.0", optional = true }
-
-[dev-dependencies]
-wabt = "0.9.1"
-criterion = "0.2"
-
-[features]
-clif = []
-llvm = ["wasmer-llvm-backend"]
-singlepass = ["wasmer-singlepass-backend"]
-
-[[bench]]
-name = "metering_benchmark"
-harness = false