install: with -t, check if we aren't passed a file

Should pass tests/install/basic-1

src/uu/install/src/install.rs

@@ -583,6 +583,14 @@ fn standard(mut paths: Vec<String>, b: &Behavior) -> UResult<()> {
  }
  }
  }
+ if b.target_dir.is_some() {
+ let p = to_create.unwrap();
+
+ if !p.exists() || !p.is_dir() {
+ show_error!("failed to access '{}': Not a directory", p.display());
+ return Err(1.into());
+ }
+ }
  }
 
  if sources.len() > 1 || is_potential_directory_path(&target) {

tests/by-util/test_install.rs

@@ -1538,3 +1538,27 @@ fn test_install_compare_option() {
  .code_is(1)
  .stderr_contains("Options --compare and --strip are mutually exclusive");
 }
+
+#[test]
+// Matches part of tests/install/basic-1
+fn test_t_exist_dir() {
+ let scene = TestScenario::new(util_name!());
+ let at = &scene.fixtures;
+
+ let source1 = "file";
+ let target_dir = "sub4/";
+ let target_file = "sub4/file_exists";
+
+ at.touch(source1);
+ at.mkdir(target_dir);
+ at.touch(target_file);
+
+ scene
+ .ucmd()
+ .arg("-t")
+ .arg(target_file)
+ .arg("-Dv")
+ .arg(source1)
+ .fails()
+ .stderr_contains("failed to access 'sub4/file_exists': Not a directory");
+}