Tests with Chrono

chronotest/Cargo.lock

@@ -0,0 +1,93 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "chrono"
+version = "0.4.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73"
+dependencies = [
+ "libc",
+ "num-integer",
+ "num-traits",
+ "time",
+ "winapi",
+]
+
+[[package]]
+name = "chronotest"
+version = "0.1.0"
+dependencies = [
+ "chrono",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.121"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "autocfg",
+]
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+[[package]]
+name = "time"
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+dependencies = [
+ "libc",
+ "wasi",
+ "winapi",
+]
+
+[[package]]
+name = "wasi"
+version = "0.10.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a143597ca7c7793eff794def352d41792a93c481eb1042423ff7ff72ba2c31f"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
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chronotest/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "chronotest"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+chrono = "0.4.19"

chronotest/src/main.rs

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+use chrono::DateTime;
+use chrono::SecondsFormat;
+use chrono::TimeZone;
+use chrono::Utc;
+
+fn from_millis(millis: i64) -> DateTime<Utc> {
+    Utc.timestamp_millis(millis)
+}
+
+fn candle_id(timestamp: &DateTime<Utc>, size_ms: i64) -> DateTime<Utc> {
+    let millis = timestamp.timestamp_millis();
+    println!(
+        "{} -> {}",
+        timestamp.to_rfc3339_opts(SecondsFormat::Millis, false),
+        millis
+    );
+    let id = (millis / size_ms) * size_ms;
+    println!("                                 {}", id);
+    Utc.timestamp_millis(id)
+}
+
+fn display(name: &str, millis: i64) {
+    let today = from_millis(millis);
+    println!(
+        "{:>10}: {}",
+        name,
+        today.to_rfc3339_opts(SecondsFormat::Millis, false)
+    );
+    println!(
+        "{:>10}: {}",
+        "ID",
+        candle_id(&today, 10).to_rfc3339_opts(SecondsFormat::Millis, false)
+    );
+}
+
+fn main() {
+    let complete = (1648641824010i64 / 10) * 10;
+    println!("Complete: {}", complete);
+
+    display("0", 1648641824000);
+    display("1", 1648641824001);
+    display("9", 1648641824009);
+    display("10", 1648641824010);
+    display("99", 1648641824099);
+    display("100", 1648641824100);
+}