From ba9b4937763fce53ec29cd38f7c9bfa021848778 Mon Sep 17 00:00:00 2001
From: Oskari Timperi <oskari.timperi@iki.fi>
Date: Thu, 28 Mar 2019 21:53:23 +0200
Subject: Add tests

---
 tests/tests.rs | 174 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 174 insertions(+)
 create mode 100644 tests/tests.rs

diff --git a/tests/tests.rs b/tests/tests.rs
new file mode 100644
index 0000000..a46b1f5
--- /dev/null
+++ b/tests/tests.rs
@@ -0,0 +1,174 @@
+use std::env;
+use std::ffi::OsStr;
+use std::io::{self, Write, Read, BufRead, BufReader};
+use std::path::PathBuf;
+use std::process::{self, Command, Stdio};
+
+fn xsvre_exe() -> io::Result<PathBuf> {
+    let mut exe = env::current_exe()?;
+    exe.pop();
+    exe.pop();
+    exe.push("csvre");
+    Ok(exe)
+}
+
+fn command<I, S>(args: I, input: &[u8]) -> process::Output
+where
+    I: IntoIterator<Item = S>,
+    S: AsRef<OsStr>,
+{
+    let mut child = Command::new(xsvre_exe().unwrap())
+        .args(args)
+        .stdin(Stdio::piped())
+        .stdout(Stdio::piped())
+        .spawn()
+        .unwrap();
+
+    {
+        let stdin = child.stdin.as_mut().unwrap();
+        stdin.write_all(input).unwrap();
+    }
+
+    child.wait_with_output().unwrap()
+}
+
+#[test]
+fn numeric_column() {
+    let output = command(
+        &["-c", "1", "\\s+", ""],
+        b"\
+column1,column2,column3
+foo,bar,baz
+frob,n i z,lorem
+ipsum,dolor,sit
+",
+    );
+
+    assert!(output.status.success());
+
+    assert_eq!(
+        "\
+column1,column2,column3
+foo,bar,baz
+frob,niz,lorem
+ipsum,dolor,sit
+",
+        String::from_utf8_lossy(&output.stdout)
+    );
+}
+
+#[test]
+fn named_column() {
+    let output = command(
+        &["-c", "column2", "\\s+", ""],
+        b"\
+column1,column2,column3
+foo,bar,baz
+frob,n i z,lorem
+ipsum,dolor,sit
+",
+    );
+
+    assert!(output.status.success());
+
+    assert_eq!(
+        "\
+column1,column2,column3
+foo,bar,baz
+frob,niz,lorem
+ipsum,dolor,sit
+",
+        String::from_utf8_lossy(&output.stdout)
+    );
+}
+
+#[test]
+fn named_column_without_headers_fails() {
+    let output = command(
+        &["-c", "column2", "-n", "\\s+", ""],
+        b"\
+column1,column2,column3
+foo,bar,baz
+frob,n i z,lorem
+ipsum,dolor,sit
+",
+    );
+
+    assert!(!output.status.success());
+}
+
+#[test]
+fn no_headers() {
+    let output = command(
+        &["-c", "1", "-n", "\\w+", "HELLO"],
+        b"\
+column1,column2,column3
+foo,bar,baz
+frob,n i z,lorem
+ipsum,dolor,sit
+",
+    );
+
+    assert!(output.status.success());
+
+    assert_eq!(
+        "\
+column1,HELLO,column3
+foo,HELLO,baz
+frob,HELLO HELLO HELLO,lorem
+ipsum,HELLO,sit
+",
+        String::from_utf8_lossy(&output.stdout)
+    );
+}
+
+#[test]
+fn change_delimiter() {
+    let output = command(
+        &["-c", "1", "-d", ";", "\\s+", ""],
+        b"\
+column1;column2;column3
+foo;bar;baz
+frob;n i z;lorem
+ipsum;dolor;sit
+",
+    );
+
+    assert!(output.status.success());
+
+    assert_eq!(
+        "\
+column1;column2;column3
+foo;bar;baz
+frob;niz;lorem
+ipsum;dolor;sit
+",
+        String::from_utf8_lossy(&output.stdout)
+    );
+}
+
+
+#[test]
+fn byte_mode() {
+    let output = command(
+        &["-c", "1", "-b", "(?-u)\\s+", ""],
+        b"\
+column1,column2,column3
+foo,\0ar,baz
+frob,\xc0 i z,lorem
+ipsum,dolor,sit
+",
+    );
+
+    assert!(output.status.success());
+
+    assert_eq!(
+        &b"\
+column1,column2,column3
+foo,\0ar,baz
+frob,\xc0iz,lorem
+ipsum,dolor,sit
+"[..],
+        output.stdout.as_slice()
+    );
+}
-- 
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