Added rust test

tests/rust/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rust"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+chrono = "0.4.24"

tests/rust/src/main.rs

@@ -0,0 +1,44 @@
+use chrono::{DateTime, Utc};
+
+struct Person {
+    name: String,
+    born: String,
+}
+
+impl Person {
+    fn calc_age_in_days(&self) -> i64 {
+        let today = Utc::now();
+        let borndate = DateTime::<Utc>::from_utc(
+            chrono::NaiveDate::parse_from_str(&self.born, "%d-%m-%Y")
+                .unwrap()
+                .and_hms_opt(0, 0, 0)
+                .unwrap(),
+            Utc,
+        );
+
+        today.signed_duration_since(borndate).num_days()
+    }
+
+    fn print(&self, f: fn(&Person) -> String) {
+        println!("{}", f(self));
+    }
+}
+
+/*
+Formatting of person
+*/
+fn format_person(p: &Person) -> String {
+    let age = p.calc_age_in_days();
+
+    format!("{} is {} days old", p.name, age)
+}
+
+fn main() {
+    // Create Donald
+    let donald = Person {
+        name: "Donald Duck".to_string(),
+        born: "07-09-1934".to_string(),
+    };
+
+    donald.print(format_person);
+}

tests/rust_spec.lua

@@ -0,0 +1,60 @@
+describe("rust", function()
+    local core = require("agrolens.core")
+    local buffers = nil
+    local eq = assert.equals
+
+    it("load", function()
+        vim.cmd.edit("tests/rust/src/main.rs")
+        buffers = vim.api.nvim_list_bufs()
+        eq(#buffers, 1)
+
+        local content  = vim.api.nvim_buf_get_lines(buffers[1], 0, -1, false)
+
+        -- make sure buffer has content
+        eq(string.match(content[1], "DateTime"), "DateTime")
+
+        core.get_captures({ queries = { "functions" }, bufids = buffers })
+    end)
+
+    it("functions", function()
+        local entries = core.get_captures({ queries = { "functions" }, bufids = buffers })
+
+        eq(#entries, 4)
+        eq(entries[1].filename, "tests/rust/src/main.rs")
+        eq(entries[1].lnum, 9)
+        eq(entries[1].col, 4)
+
+        eq(entries[1].line, "    fn calc_age_in_days(&self) -> i64 {")
+        eq(entries[2].line, "    fn print(&self, f: fn(&Person) -> String) {")
+        eq(entries[3].line, "fn format_person(p: &Person) -> String {")
+        eq(entries[4].line, "fn main() {")
+    end)
+
+    it("callings", function()
+        local entries = core.get_captures({ queries = { "callings" }, bufids = buffers })
+
+        eq(#entries, 7)
+        eq(entries[1].filename, "tests/rust/src/main.rs")
+        eq(entries[1].lnum, 10)
+        eq(entries[1].col, 8)
+
+        eq(entries[1].line, "        let today = Utc::now();")
+        eq(entries[2].line, '            chrono::NaiveDate::parse_from_str(&self.born, "%d-%m-%Y")')
+        eq(entries[3].line, "        today.signed_duration_since(borndate).num_days()")
+        eq(entries[4].line, "    let age = p.calc_age_in_days();")
+        eq(entries[5].line, '        name: "Donald Duck".to_string(),')
+        eq(entries[6].line, '        born: "07-09-1934".to_string(),')
+        eq(entries[7].line, "    donald.print(format_person);")
+    end)
+
+    it("comments", function()
+        local entries = core.get_captures({ queries = { "comments" }, bufids = buffers })
+
+        eq(#entries, 2)
+        eq(entries[1].filename, "tests/rust/src/main.rs")
+        eq(entries[1].lnum, 27)
+        eq(entries[1].col, 0)
+        eq(entries[1].line, "/*")
+        eq(entries[2].line, "    // Create Donald")
+    end)
+end)