grep: sync

exercises/practice/grep/.meta/test_template.tera

@@ -0,0 +1,148 @@
+use grep::*;
+
+#[test]
+#[ignore]
+fn nonexistent_file_returns_error() {
+    let pattern = "Agamemnon";
+    let flags = Flags::new(&[]);
+    let files = ["0-1-nonexistent-file-returns-error-iliad.txt"];
+    assert!(grep(pattern, &flags, &files).is_err());
+}
+
+#[test]
+#[ignore]
+fn grep_returns_result() {
+    let pattern = "Agamemnon";
+    let flags = Flags::new(&[]);
+    let files = Files::new(&["0-2-grep-returns-result-iliad.txt"]);
+    assert!(grep(pattern, &flags, files.as_ref()).is_ok());
+}
+
+{% for test_group in cases %}
+{% set group_idx = loop.index %}
+{% for test in test_group.cases %}
+{% set test_idx = loop.index %}
+
+{#
+    This prefix is added to the file names to ensure each test case has its own
+    set of files. This is necessary because every test case creates and deletes
+    its own files, so the names must be unique to prevent conflicts.
+#}
+{% set prefix = group_idx ~ "-" ~ test_idx %}
+
+#[test]
+#[ignore]
+fn {{ test.description | snake_case }}() {
+    let pattern = {{ test.input.pattern | json_encode() }};
+    let flags = Flags::new(&{{ test.input.flags | json_encode() }});
+    let files = Files::new(&[
+        {% for file in test.input.files -%}
+            "{{ prefix }}-{{ file }}",
+        {%- endfor %}
+    ]);
+    let actual = grep(pattern, &flags, files.as_ref()).unwrap();
+    let expected: &[&str] = &[
+        {% if test.input.files | length > 1 or test.input.flags is containing("-l") %}
+            {% for line in test.expected %}
+                "{{ prefix }}-{{ line }}",
+            {% endfor %}
+        {% else %}
+            {% for line in test.expected %}
+                "{{ line }}",
+            {% endfor %}
+        {% endif %}
+    ];
+    assert_eq!(actual, expected);
+}
+{% endfor %}
+{% endfor %}
+
+static ILIAD_CONTENT: &str = "\
+Achilles sing, O Goddess! Peleus' son;
+His wrath pernicious, who ten thousand woes
+Caused to Achaia's host, sent many a soul
+Illustrious into Ades premature,
+And Heroes gave (so stood the will of Jove)
+To dogs and to all ravening fowls a prey,
+When fierce dispute had separated once
+The noble Chief Achilles from the son
+Of Atreus, Agamemnon, King of men.
+";
+
+static MIDSUMMER_NIGHT_CONTENT: &str = "\
+I do entreat your grace to pardon me.
+I know not by what power I am made bold,
+Nor how it may concern my modesty,
+In such a presence here to plead my thoughts;
+But I beseech your grace that I may know
+The worst that may befall me in this case,
+If I refuse to wed Demetrius.
+";
+
+static PARADISE_LOST_CONTENT: &str = "\
+Of Mans First Disobedience, and the Fruit
+Of that Forbidden Tree, whose mortal tast
+Brought Death into the World, and all our woe,
+With loss of Eden, till one greater Man
+Restore us, and regain the blissful Seat,
+Sing Heav'nly Muse, that on the secret top
+Of Oreb, or of Sinai, didst inspire
+That Shepherd, who first taught the chosen Seed
+";
+
+/// In The White Night
+/// A poem by Alexander Blok(https://en.wikipedia.org/wiki/Alexander_Blok)
+/// a Russian poet who is regarded as one of the most important figures of the Silver Age of Russian Poetry
+/// You can read the translation here: https://lyricstranslate.com/ru/белой-ночью-месяц-красный-white-night-crimson-crescent.html
+static IN_THE_WHITE_NIGHT_CONTENT: &str = "
+Белой ночью месяц красный
+Выплывает в синеве.
+Бродит призрачно-прекрасный,
+Отражается в Неве.
+Мне провидится и снится
+Исполненье тайных дум.
+В вас ли доброе таится,
+Красный месяц, тихий шум?..
+";
+
+struct Files<'a> {
+    file_names: &'a [&'a str],
+}
+
+impl<'a> Files<'a> {
+    fn new(file_names: &'a [&'a str]) -> Self {
+        for file_name in file_names {
+            let content = if file_name.ends_with("iliad.txt") {
+                ILIAD_CONTENT
+            } else if file_name.ends_with("midsummer-night.txt") {
+                MIDSUMMER_NIGHT_CONTENT
+            } else if file_name.ends_with("paradise-lost.txt") {
+                PARADISE_LOST_CONTENT
+            } else {
+                IN_THE_WHITE_NIGHT_CONTENT
+            };
+            std::fs::write(file_name, content).unwrap_or_else(|_| {
+                panic!(
+                "Error setting up file '{file_name}' with the following content:\n{content}"
+            )
+            });
+        }
+
+        Self { file_names }
+    }
+}
+
+impl<'a> Drop for Files<'a> {
+    fn drop(&mut self) {
+        for file_name in self.file_names {
+            std::fs::remove_file(file_name)
+                .unwrap_or_else(|e| panic!("Could not delete file '{file_name}': {e}"));
+        }
+    }
+}
+
+impl<'a> AsRef<[&'a str]> for Files<'a> {
+    fn as_ref(&self) -> &[&'a str] {
+        self.file_names
+    }
+}

exercises/practice/grep/.meta/tests.toml

@@ -1,3 +1,85 @@
-# This is an auto-generated file. Regular comments will be removed when this
-# file is regenerated. Regenerating will not touch any manually added keys,
-# so comments can be added in a "comment" key.
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[9049fdfd-53a7-4480-a390-375203837d09]
+description = "Test grepping a single file -> One file, one match, no flags"
+
+[76519cce-98e3-46cd-b287-aac31b1d77d6]
+description = "Test grepping a single file -> One file, one match, print line numbers flag"
+
+[af0b6d3c-e0e8-475e-a112-c0fc10a1eb30]
+description = "Test grepping a single file -> One file, one match, case-insensitive flag"
+
+[ff7af839-d1b8-4856-a53e-99283579b672]
+description = "Test grepping a single file -> One file, one match, print file names flag"
+
+[8625238a-720c-4a16-81f2-924ec8e222cb]
+description = "Test grepping a single file -> One file, one match, match entire lines flag"
+
+[2a6266b3-a60f-475c-a5f5-f5008a717d3e]
+description = "Test grepping a single file -> One file, one match, multiple flags"
+
+[842222da-32e8-4646-89df-0d38220f77a1]
+description = "Test grepping a single file -> One file, several matches, no flags"
+
+[4d84f45f-a1d8-4c2e-a00e-0b292233828c]
+description = "Test grepping a single file -> One file, several matches, print line numbers flag"
+
+[0a483b66-315b-45f5-bc85-3ce353a22539]
+description = "Test grepping a single file -> One file, several matches, match entire lines flag"
+
+[3d2ca86a-edd7-494c-8938-8eeed1c61cfa]
+description = "Test grepping a single file -> One file, several matches, case-insensitive flag"
+
+[1f52001f-f224-4521-9456-11120cad4432]
+description = "Test grepping a single file -> One file, several matches, inverted flag"
+
+[7a6ede7f-7dd5-4364-8bf8-0697c53a09fe]
+description = "Test grepping a single file -> One file, no matches, various flags"
+
+[3d3dfc23-8f2a-4e34-abd6-7b7d140291dc]
+description = "Test grepping a single file -> One file, one match, file flag takes precedence over line flag"
+
+[87b21b24-b788-4d6e-a68b-7afe9ca141fe]
+description = "Test grepping a single file -> One file, several matches, inverted and match entire lines flags"
+
+[ba496a23-6149-41c6-a027-28064ed533e5]
+description = "Test grepping multiples files at once -> Multiple files, one match, no flags"
+
+[4539bd36-6daa-4bc3-8e45-051f69f5aa95]
+description = "Test grepping multiples files at once -> Multiple files, several matches, no flags"
+
+[9fb4cc67-78e2-4761-8e6b-a4b57aba1938]
+description = "Test grepping multiples files at once -> Multiple files, several matches, print line numbers flag"
+
+[aeee1ef3-93c7-4cd5-af10-876f8c9ccc73]
+description = "Test grepping multiples files at once -> Multiple files, one match, print file names flag"
+
+[d69f3606-7d15-4ddf-89ae-01df198e6b6c]
+description = "Test grepping multiples files at once -> Multiple files, several matches, case-insensitive flag"
+
+[82ef739d-6701-4086-b911-007d1a3deb21]
+description = "Test grepping multiples files at once -> Multiple files, several matches, inverted flag"
+
+[77b2eb07-2921-4ea0-8971-7636b44f5d29]
+description = "Test grepping multiples files at once -> Multiple files, one match, match entire lines flag"
+
+[e53a2842-55bb-4078-9bb5-04ac38929989]
+description = "Test grepping multiples files at once -> Multiple files, one match, multiple flags"
+
+[9c4f7f9a-a555-4e32-bb06-4b8f8869b2cb]
+description = "Test grepping multiples files at once -> Multiple files, no matches, various flags"
+
+[ba5a540d-bffd-481b-bd0c-d9a30f225e01]
+description = "Test grepping multiples files at once -> Multiple files, several matches, file flag takes precedence over line number flag"
+
+[ff406330-2f0b-4b17-9ee4-4b71c31dd6d2]
+description = "Test grepping multiples files at once -> Multiple files, several matches, inverted and match entire lines flags"