Add initial nu-test-support port (#913)

* Add initial nu-test-support port

* finish changing binary name

* Oops, these aren't Windows-safe tests

tests/path/expand_path.rs

@@ -0,0 +1,246 @@
+use std::path::PathBuf;
+
+use nu_test_support::playground::Playground;
+
+use nu_path::expand_path_with;
+
+#[cfg(not(windows))]
+#[test]
+fn expand_path_with_and_without_relative() {
+    let relative_to = "/foo/bar";
+    let path = "../..";
+    let full_path = "/foo/bar/../..";
+
+    let cwd = std::env::current_dir().expect("Could not get current directory");
+    assert_eq!(
+        expand_path_with(full_path, cwd),
+        expand_path_with(path, relative_to),
+    );
+}
+
+#[test]
+fn expand_path_with_relative() {
+    let relative_to = "/foo/bar";
+    let path = "../..";
+
+    assert_eq!(PathBuf::from("/"), expand_path_with(path, relative_to),);
+}
+
+#[cfg(not(windows))]
+#[test]
+fn expand_path_no_change() {
+    let path = "/foo/bar";
+
+    let cwd = std::env::current_dir().expect("Could not get current directory");
+    let actual = expand_path_with(&path, cwd);
+
+    assert_eq!(actual, PathBuf::from(path));
+}
+
+#[test]
+fn expand_unicode_path_no_change() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let mut spam = dirs.test().clone();
+        spam.push("🚒.txt");
+
+        let cwd = std::env::current_dir().expect("Could not get current directory");
+        let actual = expand_path_with(spam, cwd);
+        let mut expected = dirs.test().clone();
+        expected.push("🚒.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[ignore]
+#[test]
+fn expand_non_utf8_path() {
+    // TODO
+}
+
+#[test]
+fn expand_path_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let actual = expand_path_with("spam.txt", dirs.test());
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_unicode_path_relative_to_unicode_path_with_spaces() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let mut relative_to = dirs.test().clone();
+        relative_to.push("e-$ èрт🚒♞中片-j");
+
+        let actual = expand_path_with("🚒.txt", relative_to);
+        let mut expected = dirs.test().clone();
+        expected.push("e-$ èрт🚒♞中片-j/🚒.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[ignore]
+#[test]
+fn expand_non_utf8_path_relative_to_non_utf8_path_with_spaces() {
+    // TODO
+}
+
+#[test]
+fn expand_absolute_path_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let mut absolute_path = dirs.test().clone();
+        absolute_path.push("spam.txt");
+
+        let actual = expand_path_with(&absolute_path, "non/existent/directory");
+        let expected = absolute_path;
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_with_dot_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let actual = expand_path_with("./spam.txt", dirs.test());
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_with_many_dots_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let actual = expand_path_with("././/.//////./././//.////spam.txt", dirs.test());
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_with_double_dot_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let actual = expand_path_with("foo/../spam.txt", dirs.test());
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_with_many_double_dots_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let actual = expand_path_with("foo/bar/baz/../../../spam.txt", dirs.test());
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_with_3_ndots_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let actual = expand_path_with("foo/bar/.../spam.txt", dirs.test());
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_with_many_3_ndots_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let actual = expand_path_with(
+            "foo/bar/baz/eggs/sausage/bacon/.../.../.../spam.txt",
+            dirs.test(),
+        );
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_with_4_ndots_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let actual = expand_path_with("foo/bar/baz/..../spam.txt", dirs.test());
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_with_many_4_ndots_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let actual = expand_path_with(
+            "foo/bar/baz/eggs/sausage/bacon/..../..../spam.txt",
+            dirs.test(),
+        );
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_with_way_too_many_dots_relative_to() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let mut relative_to = dirs.test().clone();
+        relative_to.push("foo/bar/baz/eggs/sausage/bacon/vikings");
+
+        let actual = expand_path_with("././..////././...///././.....///spam.txt", relative_to);
+        let mut expected = dirs.test().clone();
+        expected.push("spam.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_unicode_path_with_way_too_many_dots_relative_to_unicode_path_with_spaces() {
+    Playground::setup("nu_path_test_1", |dirs, _| {
+        let mut relative_to = dirs.test().clone();
+        relative_to.push("foo/áčěéí  +šř=é/baz/eggs/e-$ èрт🚒♞中片-j/bacon/öäöä öäöä");
+
+        let actual = expand_path_with("././..////././...///././.....///🚒.txt", relative_to);
+        let mut expected = dirs.test().clone();
+        expected.push("🚒.txt");
+
+        assert_eq!(actual, expected);
+    });
+}
+
+#[test]
+fn expand_path_tilde() {
+    let tilde_path = "~";
+
+    let cwd = std::env::current_dir().expect("Could not get current directory");
+    let actual = expand_path_with(tilde_path, cwd);
+
+    assert!(actual.is_absolute());
+    assert!(!actual.starts_with("~"));
+}
+
+#[test]
+fn expand_path_tilde_relative_to() {
+    let tilde_path = "~";
+
+    let actual = expand_path_with(tilde_path, "non/existent/path");
+
+    assert!(actual.is_absolute());
+    assert!(!actual.starts_with("~"));
+}