From f5c4671bfbad96bf346bd7e9a21fc4317b4959df Mon Sep 17 00:00:00 2001 From: Indrajith K L Date: Sat, 3 Dec 2022 17:00:20 +0530 Subject: Adds most of the tools --- v_windows/v/vlib/os/file_test.v | 372 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 372 insertions(+) create mode 100644 v_windows/v/vlib/os/file_test.v (limited to 'v_windows/v/vlib/os/file_test.v') diff --git a/v_windows/v/vlib/os/file_test.v b/v_windows/v/vlib/os/file_test.v new file mode 100644 index 0000000..3339ad8 --- /dev/null +++ b/v_windows/v/vlib/os/file_test.v @@ -0,0 +1,372 @@ +import os + +struct Point { + x f64 + y f64 + z f64 +} + +struct Extended_Point { + a f64 + b f64 + c f64 + d f64 + e f64 + f f64 + g f64 + h f64 + i f64 +} + +enum Color { + red + green + blue +} + +[flag] +enum Permissions { + read + write + execute +} + +const ( + unit_point = Point{1.0, 1.0, 1.0} + another_point = Point{0.25, 2.25, 6.25} + extended_point = Extended_Point{1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0} + another_byte = byte(123) + another_color = Color.red + another_permission = Permissions.read | .write +) + +const ( + tfolder = os.join_path(os.temp_dir(), 'os_file_test') + tfile = os.join_path(tfolder, 'test_file') +) + +fn testsuite_begin() ? { + os.rmdir_all(tfolder) or {} + assert !os.is_dir(tfolder) + os.mkdir_all(tfolder) ? + os.chdir(tfolder) ? + assert os.is_dir(tfolder) +} + +fn testsuite_end() ? { + os.chdir(os.wd_at_startup) ? + os.rmdir_all(tfolder) ? + assert !os.is_dir(tfolder) +} + +// test_read_bytes_into_newline_text tests reading text from a file with newlines. +// This test simulates reading a larger text file step by step into a buffer and +// returning on each newline, even before the buffer is full, and reaching EOF before +// the buffer is completely filled. +fn test_read_bytes_into_newline_text() ? { + mut f := os.open_file(tfile, 'w') ? + f.write_string('Hello World!\nGood\r morning.') ? + f.close() + + f = os.open_file(tfile, 'r') ? + mut buf := []byte{len: 8} + + n0 := f.read_bytes_into_newline(mut buf) ? + assert n0 == 8 + + n1 := f.read_bytes_into_newline(mut buf) ? + assert n1 == 5 + + n2 := f.read_bytes_into_newline(mut buf) ? + assert n2 == 8 + + n3 := f.read_bytes_into_newline(mut buf) ? + assert n3 == 6 + + f.close() +} + +// test_read_bytes_into_newline_binary tests reading a binary file with NUL bytes. +// This test simulates the scenario when a byte stream is read and a newline byte +// appears in that stream and an EOF occurs before the buffer is full. +fn test_read_bytes_into_newline_binary() ? { + os.rm(tfile) or {} // FIXME This is a workaround for macos, because the file isn't truncated when open with 'w' + mut bw := []byte{len: 15} + bw[9] = 0xff + bw[12] = 10 // newline + + n0_bytes := bw[0..10] + n1_bytes := bw[10..13] + n2_bytes := bw[13..] + + mut f := os.open_file(tfile, 'w') ? + f.write(bw) ? + f.close() + + f = os.open_file(tfile, 'r') ? + mut buf := []byte{len: 10} + + n0 := f.read_bytes_into_newline(mut buf) ? + assert n0 == 10 + assert buf[..n0] == n0_bytes + + n1 := f.read_bytes_into_newline(mut buf) ? + assert n1 == 3 + assert buf[..n1] == n1_bytes + + n2 := f.read_bytes_into_newline(mut buf) ? + assert n2 == 2 + assert buf[..n2] == n2_bytes + f.close() +} + +// test_read_eof_last_read_partial_buffer_fill tests that when reading a file +// the end-of-file is detected and results in a none error being returned. This +// test simulates file reading where the end-of-file is reached inside an fread +// containing data. +fn test_read_eof_last_read_partial_buffer_fill() ? { + mut f := os.open_file(tfile, 'w') ? + bw := []byte{len: 199, init: 5} + f.write(bw) ? + f.close() + + f = os.open_file(tfile, 'r') ? + mut br := []byte{len: 100} + // Read first 100 bytes of 199 byte file, should fill buffer with no error. + n0 := f.read(mut br) ? + assert n0 == 100 + // Read remaining 99 bytes of 199 byte file, should fill buffer with no + // error, even though end-of-file was reached. + n1 := f.read(mut br) ? + assert n1 == 99 + // Read again, end-of-file was previously reached so should return none + // error. + if _ := f.read(mut br) { + // This is not intended behavior because the read function should + // not return a number of bytes read when end-of-file is reached. + assert false + } else { + // Expect none to have been returned when end-of-file. + assert err is none + } + f.close() +} + +// test_read_eof_last_read_full_buffer_fill tests that when reading a file the +// end-of-file is detected and results in a none error being returned. This test +// simulates file reading where the end-of-file is reached at the beinning of an +// fread that returns no data. +fn test_read_eof_last_read_full_buffer_fill() ? { + mut f := os.open_file(tfile, 'w') ? + bw := []byte{len: 200, init: 5} + f.write(bw) ? + f.close() + + f = os.open_file(tfile, 'r') ? + mut br := []byte{len: 100} + // Read first 100 bytes of 200 byte file, should fill buffer with no error. + n0 := f.read(mut br) ? + assert n0 == 100 + // Read remaining 100 bytes of 200 byte file, should fill buffer with no + // error. The end-of-file isn't reached yet, but there is no more data. + n1 := f.read(mut br) ? + assert n1 == 100 + // Read again, end-of-file was previously reached so should return none + // error. + if _ := f.read(mut br) { + // This is not intended behavior because the read function should + // not return a number of bytes read when end-of-file is reached. + assert false + } else { + // Expect none to have been returned when end-of-file. + assert err is none + } + f.close() +} + +fn test_write_struct() ? { + os.rm(tfile) or {} // FIXME This is a workaround for macos, because the file isn't truncated when open with 'w' + size_of_point := int(sizeof(Point)) + mut f := os.open_file(tfile, 'w') ? + f.write_struct(another_point) ? + f.close() + x := os.read_file(tfile) ? + pcopy := unsafe { &byte(memdup(&another_point, size_of_point)) } + y := unsafe { pcopy.vstring_with_len(size_of_point) } + assert x == y + $if debug { + eprintln(x.bytes()) + eprintln(y.bytes()) + } +} + +fn test_write_struct_at() ? { + mut f := os.open_file(tfile, 'w') ? + f.write_struct(extended_point) ? + f.write_struct_at(another_point, 3) ? + f.close() + f = os.open_file(tfile, 'r') ? + mut p := Point{} + f.read_struct_at(mut p, 3) ? + f.close() + + assert p == another_point +} + +fn test_read_struct() ? { + mut f := os.open_file(tfile, 'w') ? + f.write_struct(another_point) ? + f.close() + + f = os.open_file(tfile, 'r') ? + mut p := Point{} + f.read_struct(mut p) ? + f.close() + + assert p == another_point +} + +fn test_read_struct_at() ? { + mut f := os.open_file(tfile, 'w') ? + f.write([byte(1), 2, 3]) ? + f.write_struct(another_point) ? + f.close() + f = os.open_file(tfile, 'r') ? + mut p := Point{} + f.read_struct_at(mut p, 3) ? + f.close() + + assert p == another_point +} + +fn test_write_raw() ? { + os.rm(tfile) or {} // FIXME This is a workaround for macos, because the file isn't truncated when open with 'w' + size_of_point := int(sizeof(Point)) + mut f := os.open_file(tfile, 'w') ? + f.write_raw(another_point) ? + f.close() + x := os.read_file(tfile) ? + pcopy := unsafe { &byte(memdup(&another_point, size_of_point)) } + y := unsafe { pcopy.vstring_with_len(size_of_point) } + assert x == y + $if debug { + eprintln(x.bytes()) + eprintln(y.bytes()) + } +} + +fn test_write_raw_at() ? { + mut f := os.open_file(tfile, 'w') ? + f.write_raw(extended_point) ? + f.write_raw_at(another_point, 3) ? + f.close() + f = os.open_file(tfile, 'r') ? + mut p := Point{} + f.read_struct_at(mut p, 3) ? + f.close() + + assert p == another_point +} + +fn test_write_raw_at_negative_pos() ? { + mut f := os.open_file(tfile, 'w') ? + if _ := f.write_raw_at(another_point, -1) { + assert false + } + f.write_raw_at(another_point, -234) or { assert err.msg == 'Invalid argument' } + f.close() +} + +fn test_read_raw() ? { + mut f := os.open_file(tfile, 'w') ? + f.write_raw(another_point) ? + f.write_raw(another_byte) ? + f.write_raw(another_color) ? + f.write_raw(another_permission) ? + f.close() + f = os.open_file(tfile, 'r') ? + p := f.read_raw() ? + b := f.read_raw() ? + c := f.read_raw() ? + x := f.read_raw() ? + f.close() + + assert p == another_point + assert b == another_byte + assert c == another_color + assert x == another_permission +} + +fn test_read_raw_at() ? { + mut f := os.open_file(tfile, 'w') ? + f.write([byte(1), 2, 3]) ? + f.write_raw(another_point) ? + f.write_raw(another_byte) ? + f.write_raw(another_color) ? + f.write_raw(another_permission) ? + f.close() + f = os.open_file(tfile, 'r') ? + mut at := u64(3) + p := f.read_raw_at(at) ? + at += sizeof(Point) + b := f.read_raw_at(at) ? + at += sizeof(byte) + c := f.read_raw_at(at) ? + at += sizeof(Color) + x := f.read_raw_at(at) ? + at += sizeof(Permissions) + f.close() + + assert p == another_point + assert b == another_byte + assert c == another_color + assert x == another_permission +} + +fn test_read_raw_at_negative_pos() ? { + mut f := os.open_file(tfile, 'r') ? + if _ := f.read_raw_at(-1) { + assert false + } + f.read_raw_at(-234) or { assert err.msg == 'Invalid argument' } + f.close() +} + +fn test_seek() ? { + mut f := os.open_file(tfile, 'w') ? + f.write_raw(another_point) ? + f.write_raw(another_byte) ? + f.write_raw(another_color) ? + f.write_raw(another_permission) ? + f.close() + + // println('> ${sizeof(Point)} ${sizeof(byte)} ${sizeof(Color)} ${sizeof(Permissions)}') + f = os.open_file(tfile, 'r') ? + // + f.seek(i64(sizeof(Point)), .start) ? + assert f.tell() ? == sizeof(Point) + b := f.read_raw() ? + assert b == another_byte + + f.seek(i64(sizeof(Color)), .current) ? + x := f.read_raw() ? + assert x == another_permission + // + f.close() +} + +fn test_tell() ? { + for size in 10 .. 30 { + s := 'x'.repeat(size) + os.write_file(tfile, s) ? + fs := os.file_size(tfile) + assert int(fs) == size + // + mut f := os.open_file(tfile, 'r') ? + f.seek(-5, .end) ? + pos := f.tell() ? + f.close() + // dump(pos) + assert pos == size - 5 + } +} -- cgit v1.2.3