This commit is the continuing phase of extracting functionality to subcrates. We extract test helpers and begin to change Nu shell's test organization along with it.

tests/commands/ls.rs

@@ -0,0 +1,71 @@
+use test_support::fs::Stub::EmptyFile;
+use test_support::playground::Playground;
+use test_support::{nu, pipeline};
+
+#[test]
+fn lists_regular_files() {
+    Playground::setup("ls_test_1", |dirs, sandbox| {
+        sandbox.with_files(vec![
+            EmptyFile("yehuda.txt"),
+            EmptyFile("jonathan.txt"),
+            EmptyFile("andres.txt"),
+        ]);
+
+        let actual = nu!(
+            cwd: dirs.test(), pipeline(
+            r#"
+                ls
+                | count
+                | echo $it
+            "#
+        ));
+
+        assert_eq!(actual, "3");
+    })
+}
+
+#[test]
+fn lists_regular_files_using_asterisk_wildcard() {
+    Playground::setup("ls_test_2", |dirs, sandbox| {
+        sandbox.with_files(vec![
+            EmptyFile("los.txt"),
+            EmptyFile("tres.txt"),
+            EmptyFile("amigos.txt"),
+            EmptyFile("arepas.clu"),
+        ]);
+
+        let actual = nu!(
+            cwd: dirs.test(), pipeline(
+            r#"
+                ls *.txt
+                | count
+                | echo $it
+            "#
+        ));
+
+        assert_eq!(actual, "3");
+    })
+}
+
+#[test]
+fn lists_regular_files_using_question_mark_wildcard() {
+    Playground::setup("ls_test_3", |dirs, sandbox| {
+        sandbox.with_files(vec![
+            EmptyFile("yehuda.10.txt"),
+            EmptyFile("jonathan.10.txt"),
+            EmptyFile("andres.10.txt"),
+            EmptyFile("chicken_not_to_be_picked_up.100.txt"),
+        ]);
+
+        let actual = nu!(
+            cwd: dirs.test(), pipeline(
+            r#"
+                ls *.??.txt
+                | count
+                | echo $it
+            "#
+        ));
+
+        assert_eq!(actual, "3");
+    })
+}