Add tests for cut.

Makefile

@@ -166,6 +166,7 @@ TEST_PROGS  := \
   basename \
   cat \
   cp \
+  cut \
   env \
   dirname \
   echo \

test/cut.rs

@@ -0,0 +1,58 @@
+use std::process::Command;
+use util::*;
+
+static PROGNAME: &'static str = "./cut";
+static INPUT: &'static str = "lists.txt";
+
+#[path = "common/util.rs"]
+#[macro_use]
+mod util;
+
+#[test]
+fn test_prefix() {
+    let mut cmd = Command::new(PROGNAME);
+    let result = run(&mut cmd.args(&["-c", "-10", INPUT]));
+    assert_eq!(result.stdout, get_file_contents("lists_prefix.expected"));
+}
+
+#[test]
+fn test_char_range() {
+    let mut cmd = Command::new(PROGNAME);
+    let result = run(&mut cmd.args(&["-c", "4-10", INPUT]));
+    assert_eq!(result.stdout, get_file_contents("lists_char_range.expected"));
+}
+
+#[test]
+fn test_column_to_end_of_line() {
+    let mut cmd = Command::new(PROGNAME);
+    let result = run(&mut cmd.args(&["-d", ":", "-f", "5-", INPUT]));
+    assert_eq!(result.stdout, get_file_contents("lists_column_to_end_of_line.expected"));
+}
+
+#[test]
+fn test_specific_field() {
+    let mut cmd = Command::new(PROGNAME);
+    let result = run(&mut cmd.args(&["-d", " ", "-f", "3", INPUT]));
+    assert_eq!(result.stdout, get_file_contents("lists_specific_field.expected"));
+}
+
+#[test]
+fn test_multiple_fields() {
+    let mut cmd = Command::new(PROGNAME);
+    let result = run(&mut cmd.args(&["-d", ":", "-f", "1,3", INPUT]));
+    assert_eq!(result.stdout, get_file_contents("lists_multiple_fields.expected"));
+}
+
+#[test]
+fn test_tail() {
+    let mut cmd = Command::new(PROGNAME);
+    let result = run(&mut cmd.args(&["-d", ":", "--complement", "-f", "1", INPUT]));
+    assert_eq!(result.stdout, get_file_contents("lists_tail.expected"));
+}
+
+#[test]
+fn test_change_delimiter() {
+    let mut cmd = Command::new(PROGNAME);
+    let result = run(&mut cmd.args(&["-d", ":", "--complement", "--output-delimiter=#", "-f", "1", INPUT]));
+    assert_eq!(result.stdout, get_file_contents("lists_change_delimiter.expected"));
+}

test/fixtures/cut/lists.txt

@@ -0,0 +1,4 @@
+foo:bar:baz:qux:quux
+one:two:three:four:five:six:seven
+alpha:beta:gamma:delta:epsilon:zeta:eta:theta:iota:kappa:lambda:mu
+the quick brown fox jumps over the lazy dog

test/fixtures/cut/lists_change_delimiter.expected

@@ -0,0 +1,4 @@
+bar#baz#qux#quux
+two#three#four#five#six#seven
+beta#gamma#delta#epsilon#zeta#eta#theta#iota#kappa#lambda#mu
+the quick brown fox jumps over the lazy dog

test/fixtures/cut/lists_char_range.expected

@@ -0,0 +1,4 @@
+:bar:ba
+:two:th
+ha:beta
+ quick 

test/fixtures/cut/lists_column_to_end_of_line.expected

@@ -0,0 +1,4 @@
+quux
+five:six:seven
+epsilon:zeta:eta:theta:iota:kappa:lambda:mu
+the quick brown fox jumps over the lazy dog

test/fixtures/cut/lists_multiple_fields.expected

@@ -0,0 +1,4 @@
+foo:baz
+one:three
+alpha:gamma
+the quick brown fox jumps over the lazy dog

test/fixtures/cut/lists_prefix.expected

@@ -0,0 +1,4 @@
+foo:bar:ba
+one:two:th
+alpha:beta
+the quick 

test/fixtures/cut/lists_specific_field.expected

@@ -0,0 +1,4 @@
+foo:bar:baz:qux:quux
+one:two:three:four:five:six:seven
+alpha:beta:gamma:delta:epsilon:zeta:eta:theta:iota:kappa:lambda:mu
+brown

test/fixtures/cut/lists_tail.expected

@@ -0,0 +1,4 @@
+bar:baz:qux:quux
+two:three:four:five:six:seven
+beta:gamma:delta:epsilon:zeta:eta:theta:iota:kappa:lambda:mu
+the quick brown fox jumps over the lazy dog