From bb6a3c0650125e7e1cdf76ac296cf8fe823ae660 Mon Sep 17 00:00:00 2001
From: sharkdp <davidpeter@web.de>
Date: Thu, 29 Oct 2020 21:11:17 +0100
Subject: [PATCH] Add test for --length, fix #105

---
 src/bin/hexyl.rs                 |   1 +
 tests/examples/hello_world_elf64 | Bin 0 -> 8488 bytes
 tests/integration_tests.rs       |  26 ++++++++++++++++++++++++++
 3 files changed, 27 insertions(+)
 create mode 100755 tests/examples/hello_world_elf64

diff --git a/src/bin/hexyl.rs b/src/bin/hexyl.rs
index 849dc7c2..597e5cd1 100644
--- a/src/bin/hexyl.rs
+++ b/src/bin/hexyl.rs
@@ -46,6 +46,7 @@ fn run() -> Result<(), AnyhowError> {
                 .long("bytes")
                 .takes_value(true)
                 .value_name("N")
+                .conflicts_with("length")
                 .help("An alias for -n/--length"),
         )
         .arg(
diff --git a/tests/examples/hello_world_elf64 b/tests/examples/hello_world_elf64
new file mode 100755
index 0000000000000000000000000000000000000000..1257b9d2c8f04fd0db33315e0433b095f5b61cdf
GIT binary patch
literal 8488
zcmeI2J#GRq5QQIqDT0KcqKafX3bZv9+9pv7F0m0vDON%POQC~f0XYNr$T8w)dw?Wu
znkdi3JioEWtNl9f?Cx>?)NC|hqlp=!>z6T=A~1H*=G+u5lxT;@z3uB#n3dTj{m9M~
z{ghx`htuqlpJ)1zw!zf)vF?s*jv)+JMltOr2UDxdX^9AkfCz|y2#A0Ph=2%)fCz|y
z2>eR|Ctj3~ygk43YJK2c{=7eMe%^<mAp#;G0wN#+A|L`HAOa#F0wN#+BJlSKJTL2d
zHF0mNb-ftfqu9J|{MuJ9DExBkQ7kH7{l;5%!y){r5PSDL@Y3(6!L`qy?2oqnAmmx!
i%Intehf9e|zdx^k{U_mDt(_6H=aL!T<T&NCZpSCuA{)^F

literal 0
HcmV?d00001

diff --git a/tests/integration_tests.rs b/tests/integration_tests.rs
index accfe445..e8b94627 100644
--- a/tests/integration_tests.rs
+++ b/tests/integration_tests.rs
@@ -25,6 +25,32 @@ fn fails_on_non_existing_input() {
     hexyl().arg("non-existing").assert().failure();
 }
 
+#[test]
+fn length_restricts_output_size() {
+    hexyl()
+        .arg("hello_world_elf64")
+        .arg("--color=never")
+        .arg("--length=32")
+        .assert()
+        .success()
+        .stdout(
+            "┌────────┬─────────────────────────┬─────────────────────────┬────────┬────────┐\n\
+             │00000000│ 7f 45 4c 46 02 01 01 00 ┊ 00 00 00 00 00 00 00 00 │•ELF•••0┊00000000│\n\
+             │00000010│ 02 00 3e 00 01 00 00 00 ┊ 00 10 40 00 00 00 00 00 │•0>0•000┊0•@00000│\n\
+             └────────┴─────────────────────────┴─────────────────────────┴────────┴────────┘\n",
+        );
+}
+
+#[test]
+fn fail_if_length_and_bytes_options_are_used_simultaneously() {
+    hexyl()
+        .arg("hello_world_elf64")
+        .arg("--length=32")
+        .arg("--bytes=10")
+        .assert()
+        .failure();
+}
+
 #[test]
 fn display_offset() {
     hexyl()