Add more multiline pipeline forms (#4740)

tests/parsing/mod.rs

@@ -0,0 +1,46 @@
+use nu_test_support::nu;
+
+#[test]
+fn run_nu_script_single_line() {
+    let actual = nu!(cwd: "tests/parsing/samples", r#"
+        nu single_line.nu
+        "#);
+
+    assert_eq!(actual.out, "5");
+}
+
+#[test]
+fn run_nu_script_multiline_start_pipe() {
+    let actual = nu!(cwd: "tests/parsing/samples", r#"
+        nu multiline_start_pipe.nu
+        "#);
+
+    assert_eq!(actual.out, "4");
+}
+
+#[test]
+fn run_nu_script_multiline_start_pipe_win() {
+    let actual = nu!(cwd: "tests/parsing/samples", r#"
+        nu multiline_start_pipe_win.nu
+        "#);
+
+    assert_eq!(actual.out, "3");
+}
+
+#[test]
+fn run_nu_script_multiline_end_pipe() {
+    let actual = nu!(cwd: "tests/parsing/samples", r#"
+        nu multiline_end_pipe.nu
+        "#);
+
+    assert_eq!(actual.out, "2");
+}
+
+#[test]
+fn run_nu_script_multiline_end_pipe_win() {
+    let actual = nu!(cwd: "tests/parsing/samples", r#"
+        nu multiline_end_pipe_win.nu
+        "#);
+
+    assert_eq!(actual.out, "3");
+}