From 352d97e6b7a3ddfd1f4de1d592fcf95d8a507f38 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Esteban=20K=C3=BCber?= <esteban@kuber.com.ar>
Date: Wed, 21 Aug 2019 16:30:11 -0700
Subject: [PATCH] Add more tests covering more cases

---
 .../lint-dead-code-empty-unused-enum-pub.rs   |  6 +++++
 .../lint/lint-dead-code-empty-unused-enum.rs  |  5 ++++
 .../lint-dead-code-empty-unused-enum.stderr   | 15 +++++++++++
 .../ui/lint/lint-dead-code-unused-enum.rs     | 11 ++++++++
 .../ui/lint/lint-dead-code-unused-enum.stderr | 27 +++++++++++++++++++
 .../lint/lint-dead-code-unused-variant-pub.rs | 14 ++++++++++
 .../ui/lint/lint-dead-code-unused-variant.rs  | 13 +++++++++
 .../lint/lint-dead-code-unused-variant.stderr | 15 +++++++++++
 8 files changed, 106 insertions(+)
 create mode 100644 src/test/ui/lint/lint-dead-code-empty-unused-enum-pub.rs
 create mode 100644 src/test/ui/lint/lint-dead-code-empty-unused-enum.rs
 create mode 100644 src/test/ui/lint/lint-dead-code-empty-unused-enum.stderr
 create mode 100644 src/test/ui/lint/lint-dead-code-unused-enum.rs
 create mode 100644 src/test/ui/lint/lint-dead-code-unused-enum.stderr
 create mode 100644 src/test/ui/lint/lint-dead-code-unused-variant-pub.rs
 create mode 100644 src/test/ui/lint/lint-dead-code-unused-variant.rs
 create mode 100644 src/test/ui/lint/lint-dead-code-unused-variant.stderr

diff --git a/src/test/ui/lint/lint-dead-code-empty-unused-enum-pub.rs b/src/test/ui/lint/lint-dead-code-empty-unused-enum-pub.rs
new file mode 100644
index 000000000000..2b06fcb69cee
--- /dev/null
+++ b/src/test/ui/lint/lint-dead-code-empty-unused-enum-pub.rs
@@ -0,0 +1,6 @@
+// run-pass
+#![deny(unused)]
+
+pub enum E {}
+
+fn main() {}
diff --git a/src/test/ui/lint/lint-dead-code-empty-unused-enum.rs b/src/test/ui/lint/lint-dead-code-empty-unused-enum.rs
new file mode 100644
index 000000000000..834681d77e61
--- /dev/null
+++ b/src/test/ui/lint/lint-dead-code-empty-unused-enum.rs
@@ -0,0 +1,5 @@
+#![deny(unused)]
+
+enum E {} //~ ERROR enum is never used
+
+fn main() {}
diff --git a/src/test/ui/lint/lint-dead-code-empty-unused-enum.stderr b/src/test/ui/lint/lint-dead-code-empty-unused-enum.stderr
new file mode 100644
index 000000000000..4e3bebfc48bd
--- /dev/null
+++ b/src/test/ui/lint/lint-dead-code-empty-unused-enum.stderr
@@ -0,0 +1,15 @@
+error: enum is never used: `E`
+  --> $DIR/lint-dead-code-empty-unused-enum.rs:3:1
+   |
+LL | enum E {}
+   | ^^^^^^
+   |
+note: lint level defined here
+  --> $DIR/lint-dead-code-empty-unused-enum.rs:1:9
+   |
+LL | #![deny(unused)]
+   |         ^^^^^^
+   = note: `#[deny(dead_code)]` implied by `#[deny(unused)]`
+
+error: aborting due to previous error
+
diff --git a/src/test/ui/lint/lint-dead-code-unused-enum.rs b/src/test/ui/lint/lint-dead-code-unused-enum.rs
new file mode 100644
index 000000000000..e57fac259c5d
--- /dev/null
+++ b/src/test/ui/lint/lint-dead-code-unused-enum.rs
@@ -0,0 +1,11 @@
+#![deny(unused)]
+
+struct F; //~ ERROR struct is never constructed
+struct B; //~ ERROR struct is never constructed
+
+enum E { //~ ERROR enum is never used
+    Foo(F),
+    Bar(B),
+}
+
+fn main() {}
diff --git a/src/test/ui/lint/lint-dead-code-unused-enum.stderr b/src/test/ui/lint/lint-dead-code-unused-enum.stderr
new file mode 100644
index 000000000000..ea711e7b05ee
--- /dev/null
+++ b/src/test/ui/lint/lint-dead-code-unused-enum.stderr
@@ -0,0 +1,27 @@
+error: struct is never constructed: `F`
+  --> $DIR/lint-dead-code-unused-enum.rs:3:1
+   |
+LL | struct F;
+   | ^^^^^^^^^
+   |
+note: lint level defined here
+  --> $DIR/lint-dead-code-unused-enum.rs:1:9
+   |
+LL | #![deny(unused)]
+   |         ^^^^^^
+   = note: `#[deny(dead_code)]` implied by `#[deny(unused)]`
+
+error: struct is never constructed: `B`
+  --> $DIR/lint-dead-code-unused-enum.rs:4:1
+   |
+LL | struct B;
+   | ^^^^^^^^^
+
+error: enum is never used: `E`
+  --> $DIR/lint-dead-code-unused-enum.rs:6:1
+   |
+LL | enum E {
+   | ^^^^^^
+
+error: aborting due to 3 previous errors
+
diff --git a/src/test/ui/lint/lint-dead-code-unused-variant-pub.rs b/src/test/ui/lint/lint-dead-code-unused-variant-pub.rs
new file mode 100644
index 000000000000..918300ba7935
--- /dev/null
+++ b/src/test/ui/lint/lint-dead-code-unused-variant-pub.rs
@@ -0,0 +1,14 @@
+// run-pass
+#![deny(unused)]
+
+pub struct F;
+pub struct B;
+
+pub enum E {
+    Foo(F),
+    Bar(B),
+}
+
+fn main() {
+    let _ = E::Foo(F);
+}
diff --git a/src/test/ui/lint/lint-dead-code-unused-variant.rs b/src/test/ui/lint/lint-dead-code-unused-variant.rs
new file mode 100644
index 000000000000..69ab29042e5a
--- /dev/null
+++ b/src/test/ui/lint/lint-dead-code-unused-variant.rs
@@ -0,0 +1,13 @@
+#![deny(unused)]
+
+struct F;
+struct B;
+
+enum E {
+    Foo(F),
+    Bar(B), //~ ERROR variant is never constructed
+}
+
+fn main() {
+    let _ = E::Foo(F);
+}
diff --git a/src/test/ui/lint/lint-dead-code-unused-variant.stderr b/src/test/ui/lint/lint-dead-code-unused-variant.stderr
new file mode 100644
index 000000000000..919996ec3002
--- /dev/null
+++ b/src/test/ui/lint/lint-dead-code-unused-variant.stderr
@@ -0,0 +1,15 @@
+error: variant is never constructed: `Bar`
+  --> $DIR/lint-dead-code-unused-variant.rs:8:5
+   |
+LL |     Bar(B),
+   |     ^^^^^^
+   |
+note: lint level defined here
+  --> $DIR/lint-dead-code-unused-variant.rs:1:9
+   |
+LL | #![deny(unused)]
+   |         ^^^^^^
+   = note: `#[deny(dead_code)]` implied by `#[deny(unused)]`
+
+error: aborting due to previous error
+