tests: add tests for rust_decimal

PR #127

.github/workflows/rust_decimal_tests.yml

@@ -0,0 +1,22 @@
+name: Rust - test rust_decimal feature
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Run the integration tests for the rust_decimal feature set
+      run: cargo test --test integration --features rust_decimal
+

src/lib.rs

@@ -191,6 +191,10 @@
 //!   easier to write.
 //! - `wasm`: Adds a dependency on `js-sys` and `wasm-bindgen` to allow
 //!   compilation for wasm/JavaScript targets.
+//! - `rust_decimal`: Adds support for writing the
+//!    [`rust_decimal`](https://crates.io/crates/rust_decimal) `Decimal` type
+//!    with `Worksheet::write_number()`, provided it can be represented by
+//!    [`f64`].
 //! - `ryu`: Adds a dependency on `ryu`. This speeds up writing numeric
 //!   worksheet cells for large data files. It gives a performance boost above
 //!   300,000 numeric cells and can be up to 30% faster than the default number

tests/integration/decimal01.rs

@@ -0,0 +1,69 @@
+// Test case that compares a file generated by rust_xlsxwriter with a file
+// created by Excel.
+//
+// SPDX-License-Identifier: MIT OR Apache-2.0
+//
+// Copyright 2022-2024, John McNamara, [email protected]
+
+#[cfg(feature = "rust_decimal")]
+use rust_decimal::Decimal;
+
+use crate::common;
+use rust_xlsxwriter::{Format, Workbook, XlsxError};
+
+// Test case to demonstrate creating a basic file with some numeric cell data.
+fn create_new_xlsx_file_1(filename: &str) -> Result<(), XlsxError> {
+    let mut workbook = Workbook::new();
+    let worksheet = workbook.add_worksheet();
+    let format = Format::new().set_num_format("\\$0.00");
+
+    worksheet.write(0, 0, 2.1)?;
+    worksheet.write_with_format(1, 0, 2.1, &format)?;
+
+    workbook.save(filename)?;
+
+    Ok(())
+}
+
+// Write numbers with rust_decimal.
+#[cfg(feature = "rust_decimal")]
+fn create_new_xlsx_file_2(filename: &str) -> Result<(), XlsxError> {
+    let mut workbook = Workbook::new();
+    let worksheet = workbook.add_worksheet();
+    let format = Format::new().set_num_format("\\$0.00");
+
+    let decimal = Decimal::new(210, 2);
+
+    worksheet.write(0, 0, decimal)?;
+    worksheet.write_with_format(1, 0, decimal, &format)?;
+
+    workbook.save(filename)?;
+
+    workbook.save(filename)?;
+
+    Ok(())
+}
+
+#[test]
+fn decimal01_1() {
+    let test_runner = common::TestRunner::new()
+        .set_name("decimal01")
+        .set_function(create_new_xlsx_file_1)
+        .unique("1")
+        .initialize();
+
+    test_runner.assert_eq();
+    test_runner.cleanup();
+}
+
+#[test]
+fn decimal01_2() {
+    let test_runner = common::TestRunner::new()
+        .set_name("decimal01")
+        .set_function(create_new_xlsx_file_2)
+        .unique("2")
+        .initialize();
+
+    test_runner.assert_eq();
+    test_runner.cleanup();
+}

tests/integration/main.rs

@@ -536,6 +536,8 @@ mod cond_format22;
 mod data_validation01;
 mod data_validation02;
 mod data_validation03;
+#[cfg(feature = "rust_decimal")]
+mod decimal01;
 mod default_row01;
 mod default_row02;
 mod default_row03;