tests: use assert_cmd and predicates instead of assert_cli

The assert_cli is said to be deprecated: assert-rs/assert_cli#41

Cargo.toml

@@ -84,7 +84,8 @@ rustyline = { git = "https://github.com/kkawakam/rustyline", optional = true }
 tempfile = "3.0.2"
 libc = "0.2.40"
 lazy_static = "1.0.1"
-assert_cli = "0.6.2"
+assert_cmd = "0.5.0"
+predicates = "0.5.1"
 
 [profile.release]
 lto = true

tests/gnu/test_arch.rs

@@ -6,34 +6,35 @@
 // For a copy, see the LICENSE file.
 //
 
-use assert_cli;
+use std::process::Command;
+use assert_cmd::prelude::*;
 
 #[test]
 #[cfg(target_arch = "x86_64")]
 fn test_x86_64() {
-    new_cli!()
-        .succeeds()
-        .and()
-        .stdout().is("x86_64\n")
-        .unwrap();
+    new_cmd!()
+        .assert()
+        .success()
+        .stdout("x86_64\n")
+        .stderr("");
 }
 
 #[test]
 #[cfg(target_arch = "arm")]
 fn test_arm() {
-    new_cli!()
-        .succeeds()
-        .and()
-        .stdout().is("arm\n")
-        .unwrap();
+    new_cmd!()
+        .assert()
+        .success()
+        .stdout("arm\n")
+        .stderr("");
 }
 
 #[test]
 #[cfg(target_arch = "aarch64")]
 fn test_aarch64() {
-    new_cli!()
-        .succeeds()
-        .and()
-        .stdout().is("aarch64\n")
-        .unwrap();
+    new_cmd!()
+        .assert()
+        .success()
+        .stdout("aarch64\n")
+        .stderr("");
 }