Use trybuild instead of compiletest

Cargo.toml

@@ -21,7 +21,7 @@ auto_enums_core = { version = "=0.6.3", path = "core", default-features = false
 auto_enums_derive = { version = "=0.6.3", path = "derive", default-features = false }
 
 [dev-dependencies]
-compiletest = { version = "=0.3.22", package = "compiletest_rs", features = ["stable", "tmp"] }
+trybuild = "1.0"
 
 [features]
 # Default features.

azure-pipelines.yml

@@ -48,10 +48,7 @@ jobs:
       parameters:
         toolchain: nightly
     - script: |
-        cargo clean
-        cargo test -p auto_enums --all-features --test compiletest
-      env:
-        RUSTFLAGS: -Dwarnings --cfg compiletest
+        RUSTFLAGS='-Dwarnings --cfg compiletest' cargo test -p auto_enums --all-features --test compiletest
       displayName: compiletest
 
 - job: clippy
@@ -124,7 +121,5 @@ jobs:
       parameters:
         toolchain: nightly
     - script: |
-        cargo doc --no-deps --all --all-features
-      env:
-        RUSTDOCFLAGS: -Dwarnings
+        RUSTDOCFLAGS=-Dwarnings cargo doc --no-deps --all --all-features
       displayName: cargo doc

compiletest.sh

@@ -8,4 +8,5 @@
 # . ./compiletest.sh
 # ```
 
-rm -rf target/debug/deps/libauto_enums* && RUSTFLAGS='--cfg compiletest' cargo +nightly test -p auto_enums --all-features --test compiletest
+TRYBUILD=overwrite RUSTFLAGS='--cfg compiletest' cargo +nightly test -p auto_enums --all-features --test compiletest
+# RUSTFLAGS='--cfg compiletest' cargo +nightly test -p auto_enums --all-features --test compiletest

tests/compiletest.rs

@@ -6,30 +6,9 @@
     feature = "try_trait",
 ))]
 
-use std::{env, path::PathBuf};
-
-fn run_mode(mode: &'static str) {
-    let mut config = compiletest::Config::default();
-    config.mode = mode.parse().expect("invalid mode");
-    let mut me = env::current_exe().unwrap();
-    me.pop();
-    config.target_rustcflags = Some(format!(
-        "--edition=2018 \
-         -Z unstable-options \
-         --extern auto_enums \
-         -L {}",
-        me.display()
-    ));
-    let src = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
-    config.src_base = src.join("tests").join(mode);
-
-    me.pop();
-    me.pop();
-    config.build_base = me.join("tests").join(mode);
-    compiletest::run_tests(&config);
-}
-
 #[test]
-fn compiletest() {
-    run_mode("ui");
+fn ui() {
+    let t = trybuild::TestCases::new();
+    t.compile_fail("tests/ui/auto_enum/*.rs");
+    t.compile_fail("tests/ui/enum_derive/*.rs");
 }

tests/ui/auto_enum/args.stderr

@@ -45,6 +45,3 @@ error: expected `,`
    |
 67 |     #[auto_enum(marker = f t, Iterator)] //~ ERROR expected `,`
    |                            ^
-
-error: aborting due to 8 previous errors
-

tests/ui/auto_enum/attribute.stderr

@@ -15,6 +15,3 @@ error: #[rec] has been removed and replaced with #[nested]
    |
 32 |         #[rec] //~ ERROR #[rec] has been removed and replaced with #[nested]
    |         ^^^^^^
-
-error: aborting due to 3 previous errors
-

tests/ui/auto_enum/compile-fail.stderr

@@ -39,6 +39,4 @@ error[E0061]: this function takes 1 parameter but 2 parameters were supplied
   | defined here
   | expected 1 parameter
 
-error: aborting due to 5 previous errors
-
 For more information about this error, try `rustc --explain E0061`.

tests/ui/auto_enum/marker.stderr

@@ -9,6 +9,3 @@ error: cannot find macro `marker` in this scope
    |
 29 |         2 => return marker!(1..9), //~ ERROR cannot find macro `marker!` in this scope
    |                     ^^^^^^
-
-error: aborting due to 2 previous errors
-

tests/ui/auto_enum/rejected-by-rustc.stderr

@@ -12,6 +12,3 @@ help: try placing this code inside a block
    |
 
 error: `#[auto_enum]` is required two or more branches or marker macros in total, there is no branch or marker macro in this statement
-
-error: aborting due to 2 previous errors
-

tests/ui/enum_derive/args.stderr

@@ -21,6 +21,3 @@ error: expected `,`
    |
 25 | #[enum_derive(Clone Foo)] //~ ERROR expected `,`
    |                     ^^^
-
-error: aborting due to 4 previous errors
-

tests/ui/enum_derive/ty_impls.stderr

@@ -7,6 +7,3 @@ error: `enum_derive(Transpose)` all fields need to be generics
 13 | |     B(B),
 14 | | }
    | |_^
-
-error: aborting due to previous error
-

tests/ui/enum_derive/variant.stderr

@@ -33,6 +33,3 @@ error: cannot be implemented for enums with no variants
    |
 38 | enum Enum7 {} //~ ERROR cannot be implemented for enums with less than two variants
    | ^^^^^^^^^^^^^
-
-error: aborting due to 6 previous errors
-