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Add Dir.Iterator tests

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This commit adds some `std.fs.Dir.Iterator` tests.
This commit is contained in:
Jakub Konka 2020-06-30 17:43:00 +02:00
parent 8b82c40104
commit 64bd134818
1 changed files with 38 additions and 1 deletions
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39
lib/std/fs/test.zig
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@ -3,10 +3,47 @@ const testing = std.testing;
const builtin = std.builtin;
const fs = std.fs;
const mem = std.mem;
const wasi = std.os.wasi;
const Dir = std.fs.Dir;
const File = std.fs.File;
const tmpDir = testing.tmpDir;
test "Dir.Iterator" {
var tmp_dir = tmpDir(.{ .iterate = true });
defer tmp_dir.cleanup();
// First, create a couple of entries to iterate over.
const file = try tmp_dir.dir.createFile("some_file", .{});
file.close();
try tmp_dir.dir.makeDir("some_dir");
// Create iterator.
var iter = tmp_dir.dir.iterate();
var entries = std.ArrayList(Dir.Entry).init(testing.allocator);
defer entries.deinit();
while (try iter.next()) |entry| {
try entries.append(entry);
}
testing.expect(entries.items.len == 2); // note that the Iterator skips '.' and '..'
testing.expect(contains(&entries, Dir.Entry{ .name = "some_file", .kind = Dir.Entry.Kind.File }));
testing.expect(contains(&entries, Dir.Entry{ .name = "some_dir", .kind = Dir.Entry.Kind.Directory }));
}
fn entry_eql(lhs: Dir.Entry, rhs: Dir.Entry) bool {
return mem.eql(u8, lhs.name, rhs.name) and lhs.kind == rhs.kind;
}
fn contains(entries: *const std.ArrayList(Dir.Entry), el: Dir.Entry) bool {
for (entries.items) |entry| {
if (entry_eql(entry, el)) return true;
}
return false;
}
test "readAllAlloc" {
var tmp_dir = tmpDir(.{});
defer tmp_dir.cleanup();
@ -237,7 +274,7 @@ test "fs.copyFile" {
try expectFileContents(tmp.dir, dest_file2, data);
}
fn expectFileContents(dir: fs.Dir, file_path: []const u8, data: []const u8) !void {
fn expectFileContents(dir: Dir, file_path: []const u8, data: []const u8) !void {
const contents = try dir.readFileAlloc(testing.allocator, file_path, 1000);
defer testing.allocator.free(contents);