Merge pull request #126 from NULLx76/index-with-usizes

add compile tests

Author: jdonszelmann

tests/compile-fail/test_const_generic_array_zero_length.rs

@@ -0,0 +1,9 @@
+extern crate ringbuffer;
+
+use ringbuffer::ConstGenericRingBuffer;
+
+fn main() {
+    let _ = ConstGenericRingBuffer::<i32, 0>::new();
+    //~^ note: the above error was encountered while instantiating `fn ringbuffer::ConstGenericRingBuffer::<i32, 0>::new::<0>`
+    // ringbuffer can't be zero length
+}

tests/compile-fail/test_const_generic_array_zero_length_new.rs

@@ -0,0 +1,10 @@
+extern crate ringbuffer;
+
+use ringbuffer::{ConstGenericRingBuffer, RingBuffer};
+
+fn main() {
+    let mut buf = ConstGenericRingBuffer::new::<0>();
+    //~^ note: the above error was encountered while instantiating `fn ringbuffer::ConstGenericRingBuffer::<i32, 0>::new::<0>`
+    // ringbuffer can't be zero length
+    buf.push(5);
+}

tests/compiletests.rs

@@ -0,0 +1,23 @@
+extern crate compiletest_rs as compiletest;
+
+use std::path::PathBuf;
+
+#[cfg(test)]
+mod conversions;
+
+fn run_mode(mode: &'static str) {
+    let mut config = compiletest::Config::default();
+
+    config.mode = mode.parse().expect("Invalid mode");
+    config.src_base = PathBuf::from(format!("tests/{}", mode));
+    config.link_deps(); // Populate config.target_rustcflags with dependencies on the path
+    config.clean_rmeta(); // If your tests import the parent crate, this helps with E0464
+
+    compiletest::run_tests(&config);
+}
+
+#[test]
+#[cfg_attr(miri, ignore)]
+fn compile_test() {
+    run_mode("compile-fail");
+}

tests/conversions.rs

@@ -0,0 +1,135 @@
+extern crate alloc;
+
+use alloc::collections::{LinkedList, VecDeque};
+use alloc::string::ToString;
+use core::ops::Deref;
+use ringbuffer::RingBuffer;
+use ringbuffer::{AllocRingBuffer, ConstGenericRingBuffer, GrowableAllocRingBuffer};
+use std::vec;
+
+macro_rules! convert_test {
+    ($name: ident: $from: expr => $to: ty) => {
+        #[test]
+        fn $name() {
+            let a = $from;
+
+            let mut b: $to = a.into();
+            assert_eq!(b.to_vec(), vec!['1', '2']);
+            b.push('3');
+            assert_eq!(b, b);
+        }
+    };
+}
+
+macro_rules! convert_tests {
+    (
+        [$($name: ident: $from: expr),* $(,)?]
+        => $to: ty
+    ) => {
+        $(
+            convert_test!($name: $from => $to);
+        )*
+    };
+}
+
+convert_tests!(
+    [
+        alloc_from_vec: vec!['1', '2'],
+        alloc_from_ll: {let mut l = LinkedList::new(); l.push_back('1'); l.push_back('2'); l},
+        alloc_from_vd: {let mut l = VecDeque::new(); l.push_back('1'); l.push_back('2'); l},
+        alloc_from_str: "12".to_string(),
+        alloc_from_str_slice: "12",
+        alloc_from_slice: {let a: &[char] = &['1', '2']; a},
+        alloc_from_const_slice: {let a: &[char; 2] = &['1', '2']; a},
+        alloc_from_arr: {let a: [char; 2] = ['1', '2']; a},
+
+        alloc_from_cgrb: {let a = ConstGenericRingBuffer::from(['1', '2']); a},
+        alloc_from_garb: {let a = GrowableAllocRingBuffer::from(['1', '2']); a},
+    ] => AllocRingBuffer::<_>
+);
+
+convert_tests!(
+    [
+        growable_alloc_from_vec: vec!['1', '2'],
+        growable_alloc_from_ll: {let mut l = LinkedList::new(); l.push_back('1'); l.push_back('2'); l},
+        growable_alloc_from_vd: {let mut l = VecDeque::new(); l.push_back('1'); l.push_back('2'); l},
+        growable_alloc_from_str: "12".to_string(),
+        growable_alloc_from_str_slice: "12",
+        growable_alloc_from_slice: {let a: &[char] = &['1', '2']; a},
+        growable_alloc_from_const_slice: {let a: &[char; 2] = &['1', '2']; a},
+        growable_alloc_from_arr: {let a: [char; 2] = ['1', '2']; a},
+
+        growable_alloc_from_cgrb: {let a = ConstGenericRingBuffer::from(['1', '2']); a},
+        growable_alloc_from_arb: {let a = AllocRingBuffer::from(['1', '2']); a},
+    ] => GrowableAllocRingBuffer::<_>
+);
+
+convert_tests!(
+    [
+        const_from_vec: vec!['1', '2'],
+        const_from_ll: {let mut l = LinkedList::new(); l.push_back('1'); l.push_back('2'); l},
+        const_from_vd: {let mut l = VecDeque::new(); l.push_back('1'); l.push_back('2'); l},
+        const_from_str: "12".to_string(),
+        const_from_str_slice: "12",
+        const_from_slice: {let a: &[char] = &['1', '2']; a},
+        const_from_const_slice: {let a: &[char; 2] = &['1', '2']; a},
+        const_from_arr: {let a: [char; 2] = ['1', '2']; a},
+
+        const_from_garb: {let a = GrowableAllocRingBuffer::from(['1', '2']); a},
+        const_from_arb: {let a = AllocRingBuffer::from(['1', '2']); a},
+    ] => ConstGenericRingBuffer::<_, 2>
+);
+
+#[test]
+fn test_extra_conversions_growable() {
+    let a: &mut [i32; 2] = &mut [1, 2];
+    let a = GrowableAllocRingBuffer::from(a);
+    assert_eq!(a.to_vec(), vec![1, 2]);
+
+    let a: &mut [i32] = &mut [1, 2];
+    let a = GrowableAllocRingBuffer::from(a);
+    assert_eq!(a.to_vec(), vec![1, 2]);
+
+    let mut b = VecDeque::<i32>::new();
+    b.push_back(1);
+    b.push_back(2);
+    assert_eq!(a.deref(), &b);
+    assert_eq!(a.as_ref(), &b);
+}
+
+#[test]
+fn test_extra_conversions_alloc() {
+    let a: &mut [i32; 2] = &mut [1, 2];
+    let a = AllocRingBuffer::from(a);
+    assert_eq!(a.to_vec(), vec![1, 2]);
+
+    let a: &mut [i32] = &mut [1, 2];
+    let a = AllocRingBuffer::from(a);
+    assert_eq!(a.to_vec(), vec![1, 2]);
+}
+
+#[test]
+fn test_extra_conversions_const() {
+    let a: &mut [i32; 2] = &mut [1, 2];
+    let a = ConstGenericRingBuffer::<_, 2>::from(a);
+    assert_eq!(a.to_vec(), vec![1, 2]);
+
+    let a: &mut [i32] = &mut [1, 2];
+    let a = ConstGenericRingBuffer::<_, 2>::from(a);
+    assert_eq!(a.to_vec(), vec![1, 2]);
+}
+
+#[test]
+fn test_const_generic_new_parameter() {
+    // Can we specify size only on the method?
+    let mut a = ConstGenericRingBuffer::new::<2>();
+    a.push(5);
+
+    // Can we specify size in both positions?
+    let mut a = ConstGenericRingBuffer::<i32, 50>::new::<50>();
+    a.push(5);
+
+    // Can we specify size only on the struct?
+    let mut a = ConstGenericRingBuffer::<i32, 50>::new();
+    a.push(5);
+}