From a4aaa4c6b0676b35dad9eab245f4438561aac171 Mon Sep 17 00:00:00 2001
From: Julio Biason <julio.biason@diaxcapital.com.br>
Date: Tue, 5 Apr 2022 14:53:32 -0300
Subject: [PATCH] Tests with Chrono

---
 chronotest/Cargo.lock  | 93 ++++++++++++++++++++++++++++++++++++++++++
 chronotest/Cargo.toml  |  9 ++++
 chronotest/src/main.rs | 46 +++++++++++++++++++++
 3 files changed, 148 insertions(+)
 create mode 100644 chronotest/Cargo.lock
 create mode 100644 chronotest/Cargo.toml
 create mode 100644 chronotest/src/main.rs

diff --git a/chronotest/Cargo.lock b/chronotest/Cargo.lock
new file mode 100644
index 0000000..85a19f6
--- /dev/null
+++ b/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"
+checksum = "efaa7b300f3b5fe8eb6bf21ce3895e1751d9665086af2d64b42f19701015ff4f"
+
+[[package]]
+name = "num-integer"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2cc698a63b549a70bc047073d2949cce27cd1c7b0a4a862d08a8031bc2801db"
+dependencies = [
+ "autocfg",
+ "num-traits",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "time"
+version = "0.1.44"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6db9e6914ab8b1ae1c260a4ae7a49b6c5611b40328a735b21862567685e73255"
+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"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/chronotest/Cargo.toml b/chronotest/Cargo.toml
new file mode 100644
index 0000000..1f92514
--- /dev/null
+++ b/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"
diff --git a/chronotest/src/main.rs b/chronotest/src/main.rs
new file mode 100644
index 0000000..7fca8be
--- /dev/null
+++ b/chronotest/src/main.rs
@@ -0,0 +1,46 @@
+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);
+}