diff options
| -rw-r--r-- | tests/ui/unit_arg.rs | 2 | ||||
| -rw-r--r-- | tests/ui/unit_arg.stderr | 46 | ||||
| -rw-r--r-- | tests/ui/unit_arg_empty_blocks.rs | 26 | ||||
| -rw-r--r-- | tests/ui/unit_arg_empty_blocks.stderr | 51 |
4 files changed, 85 insertions, 40 deletions
diff --git a/tests/ui/unit_arg.rs b/tests/ui/unit_arg.rs index 7d1b99fedc9..2992abae775 100644 --- a/tests/ui/unit_arg.rs +++ b/tests/ui/unit_arg.rs @@ -20,7 +20,6 @@ impl Bar { } fn bad() { - foo({}); foo({ 1; }); @@ -29,7 +28,6 @@ fn bad() { foo(1); foo(2); }); - foo3({}, 2, 2); let b = Bar; b.bar({ 1; diff --git a/tests/ui/unit_arg.stderr b/tests/ui/unit_arg.stderr index 145b3c62b06..56f6a855dfa 100644 --- a/tests/ui/unit_arg.stderr +++ b/tests/ui/unit_arg.stderr @@ -1,27 +1,12 @@ error: passing a unit value to a function --> $DIR/unit_arg.rs:23:5 | -LL | foo({}); - | ^^^^^^^ - | - = note: `-D clippy::unit-arg` implied by `-D warnings` -help: move the expression in front of the call... - | -LL | {}; - | -help: ...and use a unit literal instead - | -LL | foo(()); - | ^^ - -error: passing a unit value to a function - --> $DIR/unit_arg.rs:24:5 - | LL | / foo({ LL | | 1; LL | | }); | |______^ | + = note: `-D clippy::unit-arg` implied by `-D warnings` help: remove the semicolon from the last statement in the block | LL | 1 @@ -38,7 +23,7 @@ LL | foo(()); | ^^ error: passing a unit value to a function - --> $DIR/unit_arg.rs:27:5 + --> $DIR/unit_arg.rs:26:5 | LL | foo(foo(1)); | ^^^^^^^^^^^ @@ -53,7 +38,7 @@ LL | foo(()); | ^^ error: passing a unit value to a function - --> $DIR/unit_arg.rs:28:5 + --> $DIR/unit_arg.rs:27:5 | LL | / foo({ LL | | foo(1); @@ -80,21 +65,6 @@ LL | foo(()); error: passing a unit value to a function --> $DIR/unit_arg.rs:32:5 | -LL | foo3({}, 2, 2); - | ^^^^^^^^^^^^^^ - | -help: move the expression in front of the call... - | -LL | {}; - | -help: ...and use a unit literal instead - | -LL | foo3((), 2, 2); - | ^^ - -error: passing a unit value to a function - --> $DIR/unit_arg.rs:34:5 - | LL | / b.bar({ LL | | 1; LL | | }); @@ -116,7 +86,7 @@ LL | b.bar(()); | ^^ error: passing unit values to a function - --> $DIR/unit_arg.rs:37:5 + --> $DIR/unit_arg.rs:35:5 | LL | taking_multiple_units(foo(0), foo(1)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -132,7 +102,7 @@ LL | taking_multiple_units((), ()); | ^^ ^^ error: passing unit values to a function - --> $DIR/unit_arg.rs:38:5 + --> $DIR/unit_arg.rs:36:5 | LL | / taking_multiple_units(foo(0), { LL | | foo(1); @@ -158,7 +128,7 @@ LL | taking_multiple_units((), ()); | ^^ ^^ error: passing unit values to a function - --> $DIR/unit_arg.rs:42:5 + --> $DIR/unit_arg.rs:40:5 | LL | / taking_multiple_units( LL | | { @@ -193,7 +163,7 @@ LL | (), | error: passing a unit value to a function - --> $DIR/unit_arg.rs:84:5 + --> $DIR/unit_arg.rs:82:5 | LL | Some(foo(1)) | ^^^^^^^^^^^^ @@ -207,5 +177,5 @@ help: ...and use a unit literal instead LL | Some(()) | ^^ -error: aborting due to 10 previous errors +error: aborting due to 8 previous errors diff --git a/tests/ui/unit_arg_empty_blocks.rs b/tests/ui/unit_arg_empty_blocks.rs new file mode 100644 index 00000000000..18a31eb3dee --- /dev/null +++ b/tests/ui/unit_arg_empty_blocks.rs @@ -0,0 +1,26 @@ +#![warn(clippy::unit_arg)] +#![allow(clippy::no_effect, unused_must_use, unused_variables)] + +use std::fmt::Debug; + +fn foo<T: Debug>(t: T) { + println!("{:?}", t); +} + +fn foo3<T1: Debug, T2: Debug, T3: Debug>(t1: T1, t2: T2, t3: T3) { + println!("{:?}, {:?}, {:?}", t1, t2, t3); +} + +fn bad() { + foo({}); + foo3({}, 2, 2); + taking_two_units({}, foo(0)); + taking_three_units({}, foo(0), foo(1)); +} + +fn taking_two_units(a: (), b: ()) {} +fn taking_three_units(a: (), b: (), c: ()) {} + +fn main() { + bad(); +} diff --git a/tests/ui/unit_arg_empty_blocks.stderr b/tests/ui/unit_arg_empty_blocks.stderr new file mode 100644 index 00000000000..bb58483584b --- /dev/null +++ b/tests/ui/unit_arg_empty_blocks.stderr @@ -0,0 +1,51 @@ +error: passing a unit value to a function + --> $DIR/unit_arg_empty_blocks.rs:15:5 + | +LL | foo({}); + | ^^^^--^ + | | + | help: use a unit literal instead: `()` + | + = note: `-D clippy::unit-arg` implied by `-D warnings` + +error: passing a unit value to a function + --> $DIR/unit_arg_empty_blocks.rs:16:5 + | +LL | foo3({}, 2, 2); + | ^^^^^--^^^^^^^ + | | + | help: use a unit literal instead: `()` + +error: passing unit values to a function + --> $DIR/unit_arg_empty_blocks.rs:17:5 + | +LL | taking_two_units({}, foo(0)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: move the expression in front of the call... + | +LL | foo(0); + | +help: ...and use unit literals instead + | +LL | taking_two_units((), ()); + | ^^ ^^ + +error: passing unit values to a function + --> $DIR/unit_arg_empty_blocks.rs:18:5 + | +LL | taking_three_units({}, foo(0), foo(1)); + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | +help: move the expressions in front of the call... + | +LL | foo(0); +LL | foo(1); + | +help: ...and use unit literals instead + | +LL | taking_three_units((), (), ()); + | ^^ ^^ ^^ + +error: aborting due to 4 previous errors + |