[rust] Macros

11 files changed, 125 insertions, 0 deletions

diff --git a/rust/macros/tests/invalid/Cargo.toml b/rust/macros/tests/invalid/Cargo.toml
new file mode 100644
index 0000000..b096d99
--- /dev/null
+++ b/rust/macros/tests/invalid/Cargo.toml
@@ -0,0 +1,55 @@
+#
+# This Cargo.toml file is used by the simple-trybuild module.
+# When adding a new file, please name the [[bin]] name to match the file
+# it is used to produce an error message
+#
+
+[package]
+name = "macros-tests"
+version = "0.0.0"
+edition = "2018"
+publish = false
+
+[dependencies.macros]
+path = "../../"
+default-features = false
+
+[[bin]]
+name = "comma-sep-rs"
+path = "comma-sep.rs"
+
+[[bin]]
+name = "double-commas-rs"
+path = "double-commas.rs"
+
+[[bin]]
+name = "only-arrow-rs"
+path = "only-arrow.rs"
+
+[[bin]]
+name = "only-comma-rs"
+path = "only-comma.rs"
+
+[[bin]]
+name = "single-argument-rs"
+path = "single-argument.rs"
+
+[[bin]]
+name = "triple-arguments-rs"
+path = "triple-arguments.rs"
+
+[[bin]]
+name = "two-arrows-rs"
+path = "two-arrows.rs"
+
+[[bin]]
+name = "leading-comma-rs"
+path = "leading-comma.rs"
+
+[[bin]]
+name = "no-comma-rs"
+path = "no-comma.rs"
+
+[[bin]]
+name = "missing-argument-rs"
+path = "missing-argument.rs"
diff --git a/rust/macros/tests/invalid/comma-sep.rs b/rust/macros/tests/invalid/comma-sep.rs
new file mode 100644
index 0000000..c9b6f44
--- /dev/null
+++ b/rust/macros/tests/invalid/comma-sep.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // using only commas is invalid
+    let _hm: HashMap<_, _> = hashmap!('a', 1);
+}
diff --git a/rust/macros/tests/invalid/double-commas.rs b/rust/macros/tests/invalid/double-commas.rs
new file mode 100644
index 0000000..d52dec6
--- /dev/null
+++ b/rust/macros/tests/invalid/double-commas.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // a single trailing comma is okay, but two is not
+    let _hm: HashMap<_, _> = hashmap!('a' => 2, ,);
+}
diff --git a/rust/macros/tests/invalid/leading-comma.rs b/rust/macros/tests/invalid/leading-comma.rs
new file mode 100644
index 0000000..bc03666
--- /dev/null
+++ b/rust/macros/tests/invalid/leading-comma.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // leading commas are not valid
+    let _hm: HashMap<_, _> = hashmap!(, 'a' => 2);
+}
diff --git a/rust/macros/tests/invalid/missing-argument.rs b/rust/macros/tests/invalid/missing-argument.rs
new file mode 100644
index 0000000..893d609
--- /dev/null
+++ b/rust/macros/tests/invalid/missing-argument.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // an argument should come between each pair of commas
+    let _hm: HashMap<_, _> = hashmap!('a' => 1, , 'b' => 2);
+}
diff --git a/rust/macros/tests/invalid/no-comma.rs b/rust/macros/tests/invalid/no-comma.rs
new file mode 100644
index 0000000..c4e6a92
--- /dev/null
+++ b/rust/macros/tests/invalid/no-comma.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // Key value pairs must be separated by commas
+    let _hm: HashMap<_, _> = hashmap!('a' => 1 'b' => 2);
+}
diff --git a/rust/macros/tests/invalid/only-arrow.rs b/rust/macros/tests/invalid/only-arrow.rs
new file mode 100644
index 0000000..7f7d730
--- /dev/null
+++ b/rust/macros/tests/invalid/only-arrow.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // a single random arrow is not valid
+    let _hm: HashMap<(), ()> = hashmap!(=>);
+}
diff --git a/rust/macros/tests/invalid/only-comma.rs b/rust/macros/tests/invalid/only-comma.rs
new file mode 100644
index 0000000..3b863b3
--- /dev/null
+++ b/rust/macros/tests/invalid/only-comma.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // a single random comma is not valid
+    let _hm: HashMap<(), ()> = hashmap!(,);
+}
diff --git a/rust/macros/tests/invalid/single-argument.rs b/rust/macros/tests/invalid/single-argument.rs
new file mode 100644
index 0000000..f8ac092
--- /dev/null
+++ b/rust/macros/tests/invalid/single-argument.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // a single argument is invalid
+    let _hm: HashMap<_, _> = hashmap!('a');
+}
diff --git a/rust/macros/tests/invalid/triple-arguments.rs b/rust/macros/tests/invalid/triple-arguments.rs
new file mode 100644
index 0000000..54351ae
--- /dev/null
+++ b/rust/macros/tests/invalid/triple-arguments.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // three arguments are invalid
+    hashmap!('a' => 1, 'b');
+}
diff --git a/rust/macros/tests/invalid/two-arrows.rs b/rust/macros/tests/invalid/two-arrows.rs
new file mode 100644
index 0000000..254a82e
--- /dev/null
+++ b/rust/macros/tests/invalid/two-arrows.rs
@@ -0,0 +1,7 @@
+use macros::hashmap;
+use std::collections::HashMap;
+
+fn main() {
+    // a trailing => isn't valid either
+    hashmap!('a' => 2, =>);
+}