Add infrastructure for compiletests

Also adds compilefail tests for some lints, closes #5646.

components/servo/Cargo.lock

@@ -6,6 +6,7 @@ dependencies = [
  "bitflags 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "canvas 0.0.1",
  "canvas_traits 0.0.1",
+ "compiletest_helper 0.0.1",
  "compositing 0.0.1",
  "devtools 0.0.1",
  "devtools_traits 0.0.1",
@@ -28,6 +29,7 @@ dependencies = [
  "net_traits 0.0.1",
  "net_traits_tests 0.0.1",
  "offscreen_gl_context 0.1.0 (git+https://github.com/ecoal95/rust-offscreen-rendering-context)",
+ "plugin_compiletest 0.0.1",
  "plugin_tests 0.0.1",
  "profile 0.0.1",
  "profile_traits 0.0.1",
@@ -236,6 +238,21 @@ name = "color_quant"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "compiletest_helper"
+version = "0.0.1"
+dependencies = [
+ "compiletest_rs 0.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "compiletest_rs"
+version = "0.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "log 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "compositing"
 version = "0.0.1"
@@ -1373,6 +1390,14 @@ name = "pkg-config"
 version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "plugin_compiletest"
+version = "0.0.1"
+dependencies = [
+ "compiletest_helper 0.0.1",
+ "plugins 0.0.1",
+]
+
 [[package]]
 name = "plugin_tests"
 version = "0.0.1"

components/servo/Cargo.toml

@@ -41,6 +41,12 @@ path = "../../tests/unit/style"
 [dev-dependencies.util_tests]
 path = "../../tests/unit/util"
 
+[dev-dependencies.compiletest_helper]
+path = "../../tests/compiletest/helper"
+
+[dev-dependencies.plugin_compiletest]
+path = "../../tests/compiletest/plugin"
+
 [[test]]
 name = "reftest"
 path = "../../tests/reftest.rs"