Set MSRV to 1.70

.github/workflows/rust.yml

@@ -53,3 +53,34 @@ jobs:
         with:
           command: test
           args: --release --color=always
+
+  msrv:
+    name: Build an test with MSRV (1.65.0)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Restore cached crates.io index
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+          key: ${{ runner.os }}-cargo
+      - name: Checkout code
+        uses: actions/checkout@master
+      - name: Install MSRV toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+            toolchain: 1.65.0
+            override: true
+      - name: Build
+        uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --all-features --color=always
+      - name: Test
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --release --color=always
+

CHANGELOG.md

@@ -1,3 +1,6 @@
+main:
+  * Fix support for Rust 1.65.
+
 v0.3.13 - 2024-02-18:
   * Suppress highlighting when diff contains consecutive changed lines.
   * Make suppression of highlighting based on number of non-highlighted characters more conservative.

Cargo.toml

@@ -3,10 +3,7 @@ name = "assert2"
 description = "assert!(...) and check!(...) macros inspired by Catch2, now with diffs!"
 version = "0.3.13"
 license = "BSD-2-Clause"
-authors = [
-	"Maarten de Vries <[email protected]>",
-	"Mara Bos <[email protected]>",
-]
+authors = ["Maarten de Vries <[email protected]>", "Mara Bos <[email protected]>"]
 
 rust-version = "1.65"
 edition = "2021"

src/__assert2_impl/print/diff.rs

@@ -247,7 +247,7 @@ impl Highlighter {
 	/// Write the data using the highlight ranges.
 	fn write_highlighted(&self, buffer: &mut String, data: &str) {
 		let not_highlighted = data.len() - self.total_highlighted;
-		if not_highlighted < self.total_highlighted.div_ceil(2) {
+		if not_highlighted < div_ceil(self.total_highlighted, 2) {
 			write!(buffer, "{}", self.normal.paint(data)).unwrap();
 		} else {
 			for (highlight, range) in self.ranges.iter().cloned() {
@@ -261,3 +261,34 @@ impl Highlighter {
 		}
 	}
 }
+
+fn div_ceil(a: usize, b: usize) -> usize {
+	if b == 0 {
+		a / b
+	} else {
+		let d = a / b;
+		let r = a % b;
+		if r > 0 {
+			d + 1
+		} else {
+			d
+		}
+	}
+}
+
+#[test]
+fn test_div_ceil() {
+	use crate::assert;
+	assert!(div_ceil(0, 2) == 0);
+	assert!(div_ceil(1, 2) == 1);
+	assert!(div_ceil(2, 2) == 1);
+	assert!(div_ceil(3, 2) == 2);
+	assert!(div_ceil(4, 2) == 2);
+
+	assert!(div_ceil(20, 7) == 3);
+	assert!(div_ceil(21, 7) == 3);
+	assert!(div_ceil(22, 7) == 4);
+	assert!(div_ceil(27, 7) == 4);
+	assert!(div_ceil(28, 7) == 4);
+	assert!(div_ceil(29, 7) == 5);
+}

src/__assert2_impl/print/mod.rs

@@ -3,10 +3,10 @@ use yansi::Paint;
 use std::fmt::Write;
 
 mod diff;
-use diff::{MultiLineDiff, SingleLineDiff};
+use self::diff::{MultiLineDiff, SingleLineDiff};
 
 mod options;
-use options::{AssertOptions, ExpansionFormat};
+use self::options::{AssertOptions, ExpansionFormat};
 
 pub struct FailedCheck<'a, T> {
 	pub macro_name: &'a str,

src/__assert2_impl/print/options.rs

@@ -49,7 +49,7 @@ impl AssertOptions {
 						yansi::Paint::disable()
 					}
 					return *style;
-				},
+				}
 			}
 		}
 	}
@@ -58,9 +58,7 @@ impl AssertOptions {
 	fn from_env() -> Self {
 		// If there is no valid `ASSERT2` environment variable, default to an empty string.
 		let format = std::env::var_os("ASSERT2");
-		let format = format.as_ref()
-			.and_then(|x| x.to_str())
-			.unwrap_or("");
+		let format = format.as_ref().and_then(|x| x.to_str()).unwrap_or("");
 
 		// Start with the defaults.
 		let mut output = Self {
@@ -117,8 +115,8 @@ impl ExpansionFormat {
 	pub fn expand_all<const N: usize>(self, values: [&dyn std::fmt::Debug; N]) -> [String; N] {
 		if !self.force_pretty() {
 			let expanded = values.map(|x| format!("{x:?}"));
-			if self.force_compact() ||  Self::is_compact_good(&expanded) {
-				return expanded
+			if self.force_compact() || Self::is_compact_good(&expanded) {
+				return expanded;
 			}
 		}
 		values.map(|x| format!("{x:#?}"))
@@ -138,7 +136,6 @@ impl ExpansionFormat {
 		}
 		true
 	}
-
 }
 
 /// Check if the clicolors spec thinks we should use colors.
@@ -159,11 +156,11 @@ fn should_color() -> bool {
 	}
 
 	#[allow(clippy::if_same_then_else)] // shut up clippy
-	if std::env::var_os("NO_COLOR").is_some_and(is_true) {
+	if std::env::var_os("NO_COLOR").map(is_true).unwrap_or_default() {
 		false
-	} else if std::env::var_os("CLICOLOR").is_some_and(is_false) {
+	} else if std::env::var_os("CLICOLOR").map(is_false).unwrap_or_default() {
 		false
-	} else if std::env::var_os("CLICOLOR_FORCE").is_some_and(is_true) {
+	} else if std::env::var_os("CLICOLOR_FORCE").map(is_true).unwrap_or_default() {
 		true
 	} else {
 		use is_terminal::IsTerminal;