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191
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Apache License
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http://www.apache.org/licenses/
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"License" shall mean the terms and conditions for use, reproduction,
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Copyright 2021, Louis Pilfold <louis@lpil.uk>.
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# gleeunit
A simple test runner for Gleam, using EUnit on Erlang and a custom runner on JS.
[![Package Version](https://img.shields.io/hexpm/v/gleeunit)](https://hex.pm/packages/gleeunit)
[![Hex Docs](https://img.shields.io/badge/hex-docs-ffaff3)](https://hexdocs.pm/gleeunit/)
```sh
gleam add gleeunit@1 --dev
```
```gleam
// In test/yourapp_test.gleam
import gleeunit
pub fn main() {
gleeunit.main()
}
```
Now any public function with a name ending in `_test` in the `test` directory
will be found and run as a test.
```gleam
pub fn some_function_test() {
assert some_function() == "Hello!"
}
```
Run the tests by entering `gleam test` in the command line.
### Deno
If using the Deno JavaScript runtime, you will need to add the following to your
`gleam.toml`.
```toml
[javascript.deno]
allow_read = [
"gleam.toml",
"test",
"build",
]
```

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name = "gleeunit"
version = "1.9.0"
licences = ["Apache-2.0"]
description = "A simple test runner for Gleam, using EUnit on Erlang"
repository = { type = "github", user = "lpil", repo = "gleeunit" }
links = [{ title = "Sponsor", href = "https://github.com/sponsors/lpil" }]
gleam = ">= 1.13.0"
[javascript.deno]
allow_read = ["gleam.toml", "test", "build"]
[dependencies]
gleam_stdlib = ">= 0.60.0 and < 1.0.0"
[dev-dependencies]
testhelper = { "path" = "./testhelper" }

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-record(assert, {
start :: integer(),
'end' :: integer(),
expression_start :: integer(),
kind :: gleeunit@internal@gleam_panic:assert_kind()
}).

5
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-record(asserted_expression, {
start :: integer(),
'end' :: integer(),
kind :: gleeunit@internal@gleam_panic:expression_kind()
}).

5
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-record(binary_operator, {
operator :: binary(),
left :: gleeunit@internal@gleam_panic:asserted_expression(),
right :: gleeunit@internal@gleam_panic:asserted_expression()
}).

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-record(expression, {value :: gleam@dynamic:dynamic_()}).

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-record(function_call, {
arguments :: list(gleeunit@internal@gleam_panic:asserted_expression())
}).

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-record(gleam_panic, {
message :: binary(),
file :: binary(),
module :: binary(),
function :: binary(),
line :: integer(),
kind :: gleeunit@internal@gleam_panic:panic_kind()
}).

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-record(let_assert, {
start :: integer(),
'end' :: integer(),
pattern_start :: integer(),
pattern_end :: integer(),
value :: gleam@dynamic:dynamic_()
}).

1
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-record(literal, {value :: gleam@dynamic:dynamic_()}).

3
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-record(other_expression, {
expression :: gleeunit@internal@gleam_panic:asserted_expression()
}).

1
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-record(state, {passed :: integer(), failed :: integer(), skipped :: integer()}).

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{application, gleeunit, [
{vsn, "1.9.0"},
{applications, [gleam_stdlib]},
{description, "A simple test runner for Gleam, using EUnit on Erlang"},
{modules, [erlang_test_module,
gleeunit,
gleeunit@@main,
gleeunit@internal@gleam_panic,
gleeunit@internal@reporting,
gleeunit@should,
gleeunit_ffi,
gleeunit_gleam_panic_ffi,
gleeunit_progress,
gleeunit_test_ffi]},
{registered, []}
]}.

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-module(gleeunit).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/gleeunit.gleam").
-export([main/0]).
-export_type([atom_/0, encoding/0, report_module_name/0, gleeunit_progress_option/0, eunit_option/0]).
-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.
-type atom_() :: any().
-type encoding() :: utf8.
-type report_module_name() :: gleeunit_progress.
-type gleeunit_progress_option() :: {colored, boolean()}.
-type eunit_option() :: verbose |
no_tty |
{report, {report_module_name(), list(gleeunit_progress_option())}} |
{scale_timeouts, integer()}.
-file("src/gleeunit.gleam", 42).
-spec gleam_to_erlang_module_name(binary()) -> binary().
gleam_to_erlang_module_name(Path) ->
case gleam_stdlib:string_ends_with(Path, <<".gleam"/utf8>>) of
true ->
_pipe = Path,
_pipe@1 = gleam@string:replace(
_pipe,
<<".gleam"/utf8>>,
<<""/utf8>>
),
gleam@string:replace(_pipe@1, <<"/"/utf8>>, <<"@"/utf8>>);
false ->
_pipe@2 = Path,
_pipe@3 = gleam@string:split(_pipe@2, <<"/"/utf8>>),
_pipe@4 = gleam@list:last(_pipe@3),
_pipe@5 = gleam@result:unwrap(_pipe@4, Path),
gleam@string:replace(_pipe@5, <<".erl"/utf8>>, <<""/utf8>>)
end.
-file("src/gleeunit.gleam", 18).
-spec do_main() -> nil.
do_main() ->
Options = [verbose,
no_tty,
{report, {gleeunit_progress, [{colored, true}]}},
{scale_timeouts, 10}],
Result = begin
_pipe = gleeunit_ffi:find_files(
<<"**/*.{erl,gleam}"/utf8>>,
<<"test"/utf8>>
),
_pipe@1 = gleam@list:map(_pipe, fun gleam_to_erlang_module_name/1),
_pipe@2 = gleam@list:map(
_pipe@1,
fun(_capture) -> erlang:binary_to_atom(_capture, utf8) end
),
gleeunit_ffi:run_eunit(_pipe@2, Options)
end,
Code = case Result of
{ok, _} ->
0;
{error, _} ->
1
end,
erlang:halt(Code).
-file("src/gleeunit.gleam", 13).
?DOC(
" Find and run all test functions for the current project using Erlang's EUnit\n"
" test framework, or a custom JavaScript test runner.\n"
"\n"
" Any Erlang or Gleam function in the `test` directory with a name ending in\n"
" `_test` is considered a test function and will be run.\n"
"\n"
" A test that panics is considered a failure.\n"
).
-spec main() -> nil.
main() ->
do_main().

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import gleam/list
import gleam/result
import gleam/string
/// Find and run all test functions for the current project using Erlang's EUnit
/// test framework, or a custom JavaScript test runner.
///
/// Any Erlang or Gleam function in the `test` directory with a name ending in
/// `_test` is considered a test function and will be run.
///
/// A test that panics is considered a failure.
///
pub fn main() -> Nil {
do_main()
}
@external(javascript, "./gleeunit_ffi.mjs", "main")
fn do_main() -> Nil {
let options = [
Verbose,
NoTty,
Report(#(GleeunitProgress, [Colored(True)])),
ScaleTimeouts(10),
]
let result =
find_files(matching: "**/*.{erl,gleam}", in: "test")
|> list.map(gleam_to_erlang_module_name)
|> list.map(dangerously_convert_string_to_atom(_, Utf8))
|> run_eunit(options)
let code = case result {
Ok(_) -> 0
Error(_) -> 1
}
halt(code)
}
@external(erlang, "erlang", "halt")
fn halt(a: Int) -> Nil
fn gleam_to_erlang_module_name(path: String) -> String {
case string.ends_with(path, ".gleam") {
True ->
path
|> string.replace(".gleam", "")
|> string.replace("/", "@")
False ->
path
|> string.split("/")
|> list.last
|> result.unwrap(path)
|> string.replace(".erl", "")
}
}
@external(erlang, "gleeunit_ffi", "find_files")
fn find_files(matching matching: String, in in: String) -> List(String)
type Atom
type Encoding {
Utf8
}
@external(erlang, "erlang", "binary_to_atom")
fn dangerously_convert_string_to_atom(a: String, b: Encoding) -> Atom
type ReportModuleName {
GleeunitProgress
}
type GleeunitProgressOption {
Colored(Bool)
}
type EunitOption {
Verbose
NoTty
Report(#(ReportModuleName, List(GleeunitProgressOption)))
ScaleTimeouts(Int)
}
@external(erlang, "gleeunit_ffi", "run_eunit")
fn run_eunit(a: List(Atom), b: List(EunitOption)) -> Result(Nil, a)

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import gleam/dynamic
pub type GleamPanic {
GleamPanic(
message: String,
file: String,
module: String,
function: String,
line: Int,
kind: PanicKind,
)
}
pub type PanicKind {
Todo
Panic
LetAssert(
start: Int,
end: Int,
pattern_start: Int,
pattern_end: Int,
value: dynamic.Dynamic,
)
Assert(start: Int, end: Int, expression_start: Int, kind: AssertKind)
}
pub type AssertKind {
BinaryOperator(
operator: String,
left: AssertedExpression,
right: AssertedExpression,
)
FunctionCall(arguments: List(AssertedExpression))
OtherExpression(expression: AssertedExpression)
}
pub type AssertedExpression {
AssertedExpression(start: Int, end: Int, kind: ExpressionKind)
}
pub type ExpressionKind {
Literal(value: dynamic.Dynamic)
Expression(value: dynamic.Dynamic)
Unevaluated
}
@external(erlang, "gleeunit_gleam_panic_ffi", "from_dynamic")
@external(javascript, "./gleeunit_gleam_panic_ffi.mjs", "from_dynamic")
pub fn from_dynamic(data: dynamic.Dynamic) -> Result(GleamPanic, Nil)

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-module(gleeunit_gleam_panic_ffi).
-export([from_dynamic/1]).
from_dynamic(#{
gleam_error := assert,
start := Start,
'end' := End,
expression_start := EStart
} = E) ->
wrap(E, {assert, Start, End, EStart, assert_kind(E)});
from_dynamic(#{
gleam_error := let_assert,
start := Start,
'end' := End,
pattern_start := PStart,
pattern_end := PEnd,
value := Value
} = E) ->
wrap(E, {let_assert, Start, End, PStart, PEnd, Value});
from_dynamic(#{gleam_error := panic} = E) ->
wrap(E, panic);
from_dynamic(#{gleam_error := todo} = E) ->
wrap(E, todo);
from_dynamic(_) ->
{error, nil}.
assert_kind(#{kind := binary_operator, left := L, right := R, operator := O}) ->
{binary_operator, atom_to_binary(O), expression(L), expression(R)};
assert_kind(#{kind := function_call, arguments := Arguments}) ->
{function_call, lists:map(fun expression/1, Arguments)};
assert_kind(#{kind := expression, expression := Expression}) ->
{other_expression, expression(Expression)}.
expression(#{start := S, 'end' := E, kind := literal, value := Value}) ->
{asserted_expression, S, E, {literal, Value}};
expression(#{start := S, 'end' := E, kind := expression, value := Value}) ->
{asserted_expression, S, E, {expression, Value}};
expression(#{start := S, 'end' := E, kind := unevaluated}) ->
{asserted_expression, S, E, unevaluated}.
wrap(#{
gleam_error := _,
file := File,
message := Message,
module := Module,
function := Function,
line := Line
}, Kind) ->
{ok, {gleam_panic, Message, File, Module, Function, Line, Kind}}.

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import { Result$Ok, Result$Error, List$Empty, List$NonEmpty } from "../../gleam.mjs";
import {
GleamPanic$GleamPanic,
PanicKind$Todo,
PanicKind$Panic,
PanicKind$LetAssert,
PanicKind$Assert,
AssertKind$BinaryOperator,
AssertKind$FunctionCall,
AssertKind$OtherExpression,
AssertedExpression$AssertedExpression,
ExpressionKind$Literal,
ExpressionKind$Expression,
ExpressionKind$Unevaluated,
} from "./gleam_panic.mjs";
export function from_dynamic(error) {
if (!(error instanceof globalThis.Error) || !error.gleam_error) {
return Result$Error(undefined);
}
if (error.gleam_error === "todo") {
return wrap(error, PanicKind$Todo());
}
if (error.gleam_error === "panic") {
return wrap(error, PanicKind$Panic());
}
if (error.gleam_error === "let_assert") {
let kind = PanicKind$LetAssert(
error.start,
error.end,
error.pattern_start,
error.pattern_end,
error.value,
);
return wrap(error, kind);
}
if (error.gleam_error === "assert") {
let kind = PanicKind$Assert(
error.start,
error.end,
error.expression_start,
assert_kind(error),
);
return wrap(error, kind);
}
return Result$Error(undefined);
}
function assert_kind(error) {
if (error.kind == "binary_operator") {
return AssertKind$BinaryOperator(
error.operator,
expression(error.left),
expression(error.right),
);
}
if (error.kind == "function_call") {
let list = List$Empty();
let i = error.arguments.length;
while (i--) {
list = List$NonEmpty(expression(error.arguments[i]), list);
}
return AssertKind$FunctionCall(list);
}
return AssertKind$OtherExpression(expression(error.expression));
}
function expression(data) {
const expression = AssertedExpression$AssertedExpression(data.start, data.end, undefined);
if (data.kind == "literal") {
expression.kind = ExpressionKind$Literal(data.value);
} else if (data.kind == "expression") {
expression.kind = ExpressionKind$Expression(data.value);
} else {
expression.kind = ExpressionKind$Unevaluated();
}
return expression;
}
function wrap(e, kind) {
return Result$Ok(
GleamPanic$GleamPanic(e.message, e.file, e.module, e.function, e.line, kind),
);
}

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import gleam/bit_array
import gleam/dynamic
import gleam/int
import gleam/io
import gleam/list
import gleam/option.{type Option}
import gleam/result
import gleam/string
import gleeunit/internal/gleam_panic.{type GleamPanic}
pub type State {
State(passed: Int, failed: Int, skipped: Int)
}
pub fn new_state() -> State {
State(passed: 0, failed: 0, skipped: 0)
}
pub fn finished(state: State) -> Int {
case state {
State(passed: 0, failed: 0, skipped: 0) -> {
io.println("\nNo tests found!")
1
}
State(failed: 0, skipped: 0, ..) -> {
let message =
"\n" <> int.to_string(state.passed) <> " passed, no failures"
io.println(green(message))
0
}
State(skipped: 0, ..) -> {
let message =
"\n"
<> int.to_string(state.passed)
<> " passed, "
<> int.to_string(state.failed)
<> " failures"
io.println(red(message))
1
}
State(failed: 0, ..) -> {
let message =
"\n"
<> int.to_string(state.passed)
<> " passed, 0 failures, "
<> int.to_string(state.skipped)
<> " skipped"
io.println(yellow(message))
1
}
State(..) -> {
let message =
"\n"
<> int.to_string(state.passed)
<> " passed, "
<> int.to_string(state.failed)
<> " failures, "
<> int.to_string(state.skipped)
<> " skipped"
io.println(red(message))
1
}
}
}
pub fn test_passed(state: State) -> State {
io.print(green("."))
State(..state, passed: state.passed + 1)
}
pub fn test_failed(
state: State,
module: String,
function: String,
error: dynamic.Dynamic,
) -> State {
let message = case gleam_panic.from_dynamic(error) {
Ok(error) -> {
let src = option.from_result(read_file(error.file))
format_gleam_error(error, module, function, src)
}
Error(_) -> format_unknown(module, function, error)
}
io.print("\n" <> message)
State(..state, failed: state.failed + 1)
}
pub fn eunit_missing() -> Result(never, Nil) {
let message = bold(red("Error")) <> ": EUnit libraries not found.
Your Erlang installation seems to be incomplete. If you installed Erlang using
a package manager ensure that you have installed the full Erlang
distribution instead of a stripped-down version.
"
io.print_error(message)
Error(Nil)
}
fn format_unknown(
module: String,
function: String,
error: dynamic.Dynamic,
) -> String {
string.concat([
grey(module <> "." <> function) <> "\n",
"An unexpected error occurred:\n",
"\n",
" " <> string.inspect(error) <> "\n",
])
}
fn format_gleam_error(
error: GleamPanic,
module: String,
function: String,
src: Option(BitArray),
) -> String {
let location = grey(error.file <> ":" <> int.to_string(error.line))
case error.kind {
gleam_panic.Panic -> {
string.concat([
bold(red("panic")) <> " " <> location <> "\n",
cyan(" test") <> ": " <> module <> "." <> function <> "\n",
cyan(" info") <> ": " <> error.message <> "\n",
])
}
gleam_panic.Todo -> {
string.concat([
bold(yellow("todo")) <> " " <> location <> "\n",
cyan(" test") <> ": " <> module <> "." <> function <> "\n",
cyan(" info") <> ": " <> error.message <> "\n",
])
}
gleam_panic.Assert(start:, end:, kind:, ..) -> {
string.concat([
bold(red("assert")) <> " " <> location <> "\n",
cyan(" test") <> ": " <> module <> "." <> function <> "\n",
code_snippet(src, start, end),
assert_info(kind),
cyan(" info") <> ": " <> error.message <> "\n",
])
}
gleam_panic.LetAssert(start:, end:, value:, ..) -> {
string.concat([
bold(red("let assert")) <> " " <> location <> "\n",
cyan(" test") <> ": " <> module <> "." <> function <> "\n",
code_snippet(src, start, end),
cyan("value") <> ": " <> string.inspect(value) <> "\n",
cyan(" info") <> ": " <> error.message <> "\n",
])
}
}
}
fn assert_info(kind: gleam_panic.AssertKind) -> String {
case kind {
gleam_panic.BinaryOperator(left:, right:, ..) -> {
string.concat([assert_value(" left", left), assert_value("right", right)])
}
gleam_panic.FunctionCall(arguments:) -> {
arguments
|> list.index_map(fn(e, i) {
let number = string.pad_start(int.to_string(i), 5, " ")
assert_value(number, e)
})
|> string.concat
}
gleam_panic.OtherExpression(..) -> ""
}
}
fn assert_value(name: String, value: gleam_panic.AssertedExpression) -> String {
cyan(name) <> ": " <> inspect_value(value) <> "\n"
}
fn inspect_value(value: gleam_panic.AssertedExpression) -> String {
case value.kind {
gleam_panic.Unevaluated -> grey("unevaluated")
gleam_panic.Literal(..) -> grey("literal")
gleam_panic.Expression(value:) -> string.inspect(value)
}
}
fn code_snippet(src: Option(BitArray), start: Int, end: Int) -> String {
{
use src <- result.try(option.to_result(src, Nil))
use snippet <- result.try(bit_array.slice(src, start, end - start))
use snippet <- result.try(bit_array.to_string(snippet))
let snippet = cyan(" code") <> ": " <> snippet <> "\n"
Ok(snippet)
}
|> result.unwrap("")
}
pub fn test_skipped(state: State, module: String, function: String) -> State {
io.print("\n" <> module <> "." <> function <> yellow(" skipped"))
State(..state, skipped: state.skipped + 1)
}
fn bold(text: String) -> String {
"\u{001b}[1m" <> text <> "\u{001b}[22m"
}
fn cyan(text: String) -> String {
"\u{001b}[36m" <> text <> "\u{001b}[39m"
}
fn yellow(text: String) -> String {
"\u{001b}[33m" <> text <> "\u{001b}[39m"
}
fn green(text: String) -> String {
"\u{001b}[32m" <> text <> "\u{001b}[39m"
}
fn red(text: String) -> String {
"\u{001b}[31m" <> text <> "\u{001b}[39m"
}
fn grey(text: String) -> String {
"\u{001b}[90m" <> text <> "\u{001b}[39m"
}
@external(erlang, "file", "read_file")
fn read_file(path: String) -> Result(BitArray, dynamic.Dynamic) {
case read_file_text(path) {
Ok(text) -> Ok(bit_array.from_string(text))
Error(e) -> Error(e)
}
}
@external(javascript, "../../gleeunit_ffi.mjs", "read_file")
fn read_file_text(path: String) -> Result(String, dynamic.Dynamic)

72
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@ -0,0 +1,72 @@
//// Use the `assert` keyword instead of this module.
import gleam/option.{type Option, None, Some}
import gleam/string
pub fn equal(a: t, b: t) -> Nil {
case a == b {
True -> Nil
_ ->
panic as string.concat([
"\n",
string.inspect(a),
"\nshould equal\n",
string.inspect(b),
])
}
}
pub fn not_equal(a: t, b: t) -> Nil {
case a != b {
True -> Nil
_ ->
panic as string.concat([
"\n",
string.inspect(a),
"\nshould not equal\n",
string.inspect(b),
])
}
}
pub fn be_ok(a: Result(a, e)) -> a {
case a {
Ok(value) -> value
_ -> panic as string.concat(["\n", string.inspect(a), "\nshould be ok"])
}
}
pub fn be_error(a: Result(a, e)) -> e {
case a {
Error(error) -> error
_ -> panic as string.concat(["\n", string.inspect(a), "\nshould be error"])
}
}
pub fn be_some(a: Option(a)) -> a {
case a {
Some(value) -> value
_ -> panic as string.concat(["\n", string.inspect(a), "\nshould be some"])
}
}
pub fn be_none(a: Option(a)) -> Nil {
case a {
None -> Nil
_ -> panic as string.concat(["\n", string.inspect(a), "\nshould be none"])
}
}
pub fn be_true(actual: Bool) -> Nil {
actual
|> equal(True)
}
pub fn be_false(actual: Bool) -> Nil {
actual
|> equal(False)
}
pub fn fail() -> Nil {
be_true(False)
}

56
build/packages/gleeunit/src/gleeunit@internal@gleam_panic.erl Normal file
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@ -0,0 +1,56 @@
-module(gleeunit@internal@gleam_panic).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/gleeunit/internal/gleam_panic.gleam").
-export([from_dynamic/1]).
-export_type([gleam_panic/0, panic_kind/0, assert_kind/0, asserted_expression/0, expression_kind/0]).
-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.
?MODULEDOC(false).
-type gleam_panic() :: {gleam_panic,
binary(),
binary(),
binary(),
binary(),
integer(),
panic_kind()}.
-type panic_kind() :: todo |
panic |
{let_assert,
integer(),
integer(),
integer(),
integer(),
gleam@dynamic:dynamic_()} |
{assert, integer(), integer(), integer(), assert_kind()}.
-type assert_kind() :: {binary_operator,
binary(),
asserted_expression(),
asserted_expression()} |
{function_call, list(asserted_expression())} |
{other_expression, asserted_expression()}.
-type asserted_expression() :: {asserted_expression,
integer(),
integer(),
expression_kind()}.
-type expression_kind() :: {literal, gleam@dynamic:dynamic_()} |
{expression, gleam@dynamic:dynamic_()} |
unevaluated.
-file("src/gleeunit/internal/gleam_panic.gleam", 49).
?DOC(false).
-spec from_dynamic(gleam@dynamic:dynamic_()) -> {ok, gleam_panic()} |
{error, nil}.
from_dynamic(Data) ->
gleeunit_gleam_panic_ffi:from_dynamic(Data).

343
build/packages/gleeunit/src/gleeunit@internal@reporting.erl Normal file
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@ -0,0 +1,343 @@
-module(gleeunit@internal@reporting).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/gleeunit/internal/reporting.gleam").
-export([new_state/0, test_skipped/3, test_passed/1, finished/1, eunit_missing/0, test_failed/4]).
-export_type([state/0]).
-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.
?MODULEDOC(false).
-type state() :: {state, integer(), integer(), integer()}.
-file("src/gleeunit/internal/reporting.gleam", 15).
?DOC(false).
-spec new_state() -> state().
new_state() ->
{state, 0, 0, 0}.
-file("src/gleeunit/internal/reporting.gleam", 207).
?DOC(false).
-spec bold(binary()) -> binary().
bold(Text) ->
<<<<"\x{001b}[1m"/utf8, Text/binary>>/binary, "\x{001b}[22m"/utf8>>.
-file("src/gleeunit/internal/reporting.gleam", 211).
?DOC(false).
-spec cyan(binary()) -> binary().
cyan(Text) ->
<<<<"\x{001b}[36m"/utf8, Text/binary>>/binary, "\x{001b}[39m"/utf8>>.
-file("src/gleeunit/internal/reporting.gleam", 191).
?DOC(false).
-spec code_snippet(gleam@option:option(bitstring()), integer(), integer()) -> binary().
code_snippet(Src, Start, End) ->
_pipe = begin
gleam@result:'try'(
gleam@option:to_result(Src, nil),
fun(Src@1) ->
gleam@result:'try'(
gleam_stdlib:bit_array_slice(Src@1, Start, End - Start),
fun(Snippet) ->
gleam@result:'try'(
gleam@bit_array:to_string(Snippet),
fun(Snippet@1) ->
Snippet@2 = <<<<<<(cyan(<<" code"/utf8>>))/binary,
": "/utf8>>/binary,
Snippet@1/binary>>/binary,
"\n"/utf8>>,
{ok, Snippet@2}
end
)
end
)
end
)
end,
gleam@result:unwrap(_pipe, <<""/utf8>>).
-file("src/gleeunit/internal/reporting.gleam", 215).
?DOC(false).
-spec yellow(binary()) -> binary().
yellow(Text) ->
<<<<"\x{001b}[33m"/utf8, Text/binary>>/binary, "\x{001b}[39m"/utf8>>.
-file("src/gleeunit/internal/reporting.gleam", 202).
?DOC(false).
-spec test_skipped(state(), binary(), binary()) -> state().
test_skipped(State, Module, Function) ->
gleam_stdlib:print(
<<<<<<<<"\n"/utf8, Module/binary>>/binary, "."/utf8>>/binary,
Function/binary>>/binary,
(yellow(<<" skipped"/utf8>>))/binary>>
),
{state,
erlang:element(2, State),
erlang:element(3, State),
erlang:element(4, State) + 1}.
-file("src/gleeunit/internal/reporting.gleam", 219).
?DOC(false).
-spec green(binary()) -> binary().
green(Text) ->
<<<<"\x{001b}[32m"/utf8, Text/binary>>/binary, "\x{001b}[39m"/utf8>>.
-file("src/gleeunit/internal/reporting.gleam", 66).
?DOC(false).
-spec test_passed(state()) -> state().
test_passed(State) ->
gleam_stdlib:print(green(<<"."/utf8>>)),
{state,
erlang:element(2, State) + 1,
erlang:element(3, State),
erlang:element(4, State)}.
-file("src/gleeunit/internal/reporting.gleam", 223).
?DOC(false).
-spec red(binary()) -> binary().
red(Text) ->
<<<<"\x{001b}[31m"/utf8, Text/binary>>/binary, "\x{001b}[39m"/utf8>>.
-file("src/gleeunit/internal/reporting.gleam", 19).
?DOC(false).
-spec finished(state()) -> integer().
finished(State) ->
case State of
{state, 0, 0, 0} ->
gleam_stdlib:println(<<"\nNo tests found!"/utf8>>),
1;
{state, _, 0, 0} ->
Message = <<<<"\n"/utf8,
(erlang:integer_to_binary(erlang:element(2, State)))/binary>>/binary,
" passed, no failures"/utf8>>,
gleam_stdlib:println(green(Message)),
0;
{state, _, _, 0} ->
Message@1 = <<<<<<<<"\n"/utf8,
(erlang:integer_to_binary(erlang:element(2, State)))/binary>>/binary,
" passed, "/utf8>>/binary,
(erlang:integer_to_binary(erlang:element(3, State)))/binary>>/binary,
" failures"/utf8>>,
gleam_stdlib:println(red(Message@1)),
1;
{state, _, 0, _} ->
Message@2 = <<<<<<<<"\n"/utf8,
(erlang:integer_to_binary(erlang:element(2, State)))/binary>>/binary,
" passed, 0 failures, "/utf8>>/binary,
(erlang:integer_to_binary(erlang:element(4, State)))/binary>>/binary,
" skipped"/utf8>>,
gleam_stdlib:println(yellow(Message@2)),
1;
{state, _, _, _} ->
Message@3 = <<<<<<<<<<<<"\n"/utf8,
(erlang:integer_to_binary(
erlang:element(2, State)
))/binary>>/binary,
" passed, "/utf8>>/binary,
(erlang:integer_to_binary(erlang:element(3, State)))/binary>>/binary,
" failures, "/utf8>>/binary,
(erlang:integer_to_binary(erlang:element(4, State)))/binary>>/binary,
" skipped"/utf8>>,
gleam_stdlib:println(red(Message@3)),
1
end.
-file("src/gleeunit/internal/reporting.gleam", 89).
?DOC(false).
-spec eunit_missing() -> {ok, any()} | {error, nil}.
eunit_missing() ->
Message = <<(bold(red(<<"Error"/utf8>>)))/binary,
": EUnit libraries not found.
Your Erlang installation seems to be incomplete. If you installed Erlang using
a package manager ensure that you have installed the full Erlang
distribution instead of a stripped-down version.
"/utf8>>,
gleam_stdlib:print_error(Message),
{error, nil}.
-file("src/gleeunit/internal/reporting.gleam", 227).
?DOC(false).
-spec grey(binary()) -> binary().
grey(Text) ->
<<<<"\x{001b}[90m"/utf8, Text/binary>>/binary, "\x{001b}[39m"/utf8>>.
-file("src/gleeunit/internal/reporting.gleam", 100).
?DOC(false).
-spec format_unknown(binary(), binary(), gleam@dynamic:dynamic_()) -> binary().
format_unknown(Module, Function, Error) ->
erlang:list_to_binary(
[<<(grey(<<<<Module/binary, "."/utf8>>/binary, Function/binary>>))/binary,
"\n"/utf8>>,
<<"An unexpected error occurred:\n"/utf8>>,
<<"\n"/utf8>>,
<<<<" "/utf8, (gleam@string:inspect(Error))/binary>>/binary,
"\n"/utf8>>]
).
-file("src/gleeunit/internal/reporting.gleam", 183).
?DOC(false).
-spec inspect_value(gleeunit@internal@gleam_panic:asserted_expression()) -> binary().
inspect_value(Value) ->
case erlang:element(4, Value) of
unevaluated ->
grey(<<"unevaluated"/utf8>>);
{literal, _} ->
grey(<<"literal"/utf8>>);
{expression, Value@1} ->
gleam@string:inspect(Value@1)
end.
-file("src/gleeunit/internal/reporting.gleam", 179).
?DOC(false).
-spec assert_value(
binary(),
gleeunit@internal@gleam_panic:asserted_expression()
) -> binary().
assert_value(Name, Value) ->
<<<<<<(cyan(Name))/binary, ": "/utf8>>/binary,
(inspect_value(Value))/binary>>/binary,
"\n"/utf8>>.
-file("src/gleeunit/internal/reporting.gleam", 160).
?DOC(false).
-spec assert_info(gleeunit@internal@gleam_panic:assert_kind()) -> binary().
assert_info(Kind) ->
case Kind of
{binary_operator, _, Left, Right} ->
erlang:list_to_binary(
[assert_value(<<" left"/utf8>>, Left),
assert_value(<<"right"/utf8>>, Right)]
);
{function_call, Arguments} ->
_pipe = Arguments,
_pipe@1 = gleam@list:index_map(
_pipe,
fun(E, I) ->
Number = gleam@string:pad_start(
erlang:integer_to_binary(I),
5,
<<" "/utf8>>
),
assert_value(Number, E)
end
),
erlang:list_to_binary(_pipe@1);
{other_expression, _} ->
<<""/utf8>>
end.
-file("src/gleeunit/internal/reporting.gleam", 113).
?DOC(false).
-spec format_gleam_error(
gleeunit@internal@gleam_panic:gleam_panic(),
binary(),
binary(),
gleam@option:option(bitstring())
) -> binary().
format_gleam_error(Error, Module, Function, Src) ->
Location = grey(
<<<<(erlang:element(3, Error))/binary, ":"/utf8>>/binary,
(erlang:integer_to_binary(erlang:element(6, Error)))/binary>>
),
case erlang:element(7, Error) of
panic ->
erlang:list_to_binary(
[<<<<<<(bold(red(<<"panic"/utf8>>)))/binary, " "/utf8>>/binary,
Location/binary>>/binary,
"\n"/utf8>>,
<<<<<<<<<<(cyan(<<" test"/utf8>>))/binary, ": "/utf8>>/binary,
Module/binary>>/binary,
"."/utf8>>/binary,
Function/binary>>/binary,
"\n"/utf8>>,
<<<<<<(cyan(<<" info"/utf8>>))/binary, ": "/utf8>>/binary,
(erlang:element(2, Error))/binary>>/binary,
"\n"/utf8>>]
);
todo ->
erlang:list_to_binary(
[<<<<<<(bold(yellow(<<"todo"/utf8>>)))/binary, " "/utf8>>/binary,
Location/binary>>/binary,
"\n"/utf8>>,
<<<<<<<<<<(cyan(<<" test"/utf8>>))/binary, ": "/utf8>>/binary,
Module/binary>>/binary,
"."/utf8>>/binary,
Function/binary>>/binary,
"\n"/utf8>>,
<<<<<<(cyan(<<" info"/utf8>>))/binary, ": "/utf8>>/binary,
(erlang:element(2, Error))/binary>>/binary,
"\n"/utf8>>]
);
{assert, Start, End, _, Kind} ->
erlang:list_to_binary(
[<<<<<<(bold(red(<<"assert"/utf8>>)))/binary, " "/utf8>>/binary,
Location/binary>>/binary,
"\n"/utf8>>,
<<<<<<<<<<(cyan(<<" test"/utf8>>))/binary, ": "/utf8>>/binary,
Module/binary>>/binary,
"."/utf8>>/binary,
Function/binary>>/binary,
"\n"/utf8>>,
code_snippet(Src, Start, End),
assert_info(Kind),
<<<<<<(cyan(<<" info"/utf8>>))/binary, ": "/utf8>>/binary,
(erlang:element(2, Error))/binary>>/binary,
"\n"/utf8>>]
);
{let_assert, Start@1, End@1, _, _, Value} ->
erlang:list_to_binary(
[<<<<<<(bold(red(<<"let assert"/utf8>>)))/binary, " "/utf8>>/binary,
Location/binary>>/binary,
"\n"/utf8>>,
<<<<<<<<<<(cyan(<<" test"/utf8>>))/binary, ": "/utf8>>/binary,
Module/binary>>/binary,
"."/utf8>>/binary,
Function/binary>>/binary,
"\n"/utf8>>,
code_snippet(Src, Start@1, End@1),
<<<<<<(cyan(<<"value"/utf8>>))/binary, ": "/utf8>>/binary,
(gleam@string:inspect(Value))/binary>>/binary,
"\n"/utf8>>,
<<<<<<(cyan(<<" info"/utf8>>))/binary, ": "/utf8>>/binary,
(erlang:element(2, Error))/binary>>/binary,
"\n"/utf8>>]
)
end.
-file("src/gleeunit/internal/reporting.gleam", 71).
?DOC(false).
-spec test_failed(state(), binary(), binary(), gleam@dynamic:dynamic_()) -> state().
test_failed(State, Module, Function, Error) ->
Message = case gleeunit_gleam_panic_ffi:from_dynamic(Error) of
{ok, Error@1} ->
Src = gleam@option:from_result(
file:read_file(erlang:element(3, Error@1))
),
format_gleam_error(Error@1, Module, Function, Src);
{error, _} ->
format_unknown(Module, Function, Error)
end,
gleam_stdlib:print(<<"\n"/utf8, Message/binary>>),
{state,
erlang:element(2, State),
erlang:element(3, State) + 1,
erlang:element(4, State)}.

153
build/packages/gleeunit/src/gleeunit@should.erl Normal file
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@ -0,0 +1,153 @@
-module(gleeunit@should).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/gleeunit/should.gleam").
-export([equal/2, not_equal/2, be_ok/1, be_error/1, be_some/1, be_none/1, be_true/1, be_false/1, fail/0]).
-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.
?MODULEDOC(" Use the `assert` keyword instead of this module.\n").
-file("src/gleeunit/should.gleam", 6).
-spec equal(DOF, DOF) -> nil.
equal(A, B) ->
case A =:= B of
true ->
nil;
_ ->
erlang:error(#{gleam_error => panic,
message => erlang:list_to_binary(
[<<"\n"/utf8>>,
gleam@string:inspect(A),
<<"\nshould equal\n"/utf8>>,
gleam@string:inspect(B)]
),
file => <<?FILEPATH/utf8>>,
module => <<"gleeunit/should"/utf8>>,
function => <<"equal"/utf8>>,
line => 10})
end.
-file("src/gleeunit/should.gleam", 19).
-spec not_equal(DOG, DOG) -> nil.
not_equal(A, B) ->
case A /= B of
true ->
nil;
_ ->
erlang:error(#{gleam_error => panic,
message => erlang:list_to_binary(
[<<"\n"/utf8>>,
gleam@string:inspect(A),
<<"\nshould not equal\n"/utf8>>,
gleam@string:inspect(B)]
),
file => <<?FILEPATH/utf8>>,
module => <<"gleeunit/should"/utf8>>,
function => <<"not_equal"/utf8>>,
line => 23})
end.
-file("src/gleeunit/should.gleam", 32).
-spec be_ok({ok, DOH} | {error, any()}) -> DOH.
be_ok(A) ->
case A of
{ok, Value} ->
Value;
_ ->
erlang:error(#{gleam_error => panic,
message => erlang:list_to_binary(
[<<"\n"/utf8>>,
gleam@string:inspect(A),
<<"\nshould be ok"/utf8>>]
),
file => <<?FILEPATH/utf8>>,
module => <<"gleeunit/should"/utf8>>,
function => <<"be_ok"/utf8>>,
line => 35})
end.
-file("src/gleeunit/should.gleam", 39).
-spec be_error({ok, any()} | {error, DOM}) -> DOM.
be_error(A) ->
case A of
{error, Error} ->
Error;
_ ->
erlang:error(#{gleam_error => panic,
message => erlang:list_to_binary(
[<<"\n"/utf8>>,
gleam@string:inspect(A),
<<"\nshould be error"/utf8>>]
),
file => <<?FILEPATH/utf8>>,
module => <<"gleeunit/should"/utf8>>,
function => <<"be_error"/utf8>>,
line => 42})
end.
-file("src/gleeunit/should.gleam", 46).
-spec be_some(gleam@option:option(DOP)) -> DOP.
be_some(A) ->
case A of
{some, Value} ->
Value;
_ ->
erlang:error(#{gleam_error => panic,
message => erlang:list_to_binary(
[<<"\n"/utf8>>,
gleam@string:inspect(A),
<<"\nshould be some"/utf8>>]
),
file => <<?FILEPATH/utf8>>,
module => <<"gleeunit/should"/utf8>>,
function => <<"be_some"/utf8>>,
line => 49})
end.
-file("src/gleeunit/should.gleam", 53).
-spec be_none(gleam@option:option(any())) -> nil.
be_none(A) ->
case A of
none ->
nil;
_ ->
erlang:error(#{gleam_error => panic,
message => erlang:list_to_binary(
[<<"\n"/utf8>>,
gleam@string:inspect(A),
<<"\nshould be none"/utf8>>]
),
file => <<?FILEPATH/utf8>>,
module => <<"gleeunit/should"/utf8>>,
function => <<"be_none"/utf8>>,
line => 56})
end.
-file("src/gleeunit/should.gleam", 60).
-spec be_true(boolean()) -> nil.
be_true(Actual) ->
_pipe = Actual,
equal(_pipe, true).
-file("src/gleeunit/should.gleam", 65).
-spec be_false(boolean()) -> nil.
be_false(Actual) ->
_pipe = Actual,
equal(_pipe, false).
-file("src/gleeunit/should.gleam", 70).
-spec fail() -> nil.
fail() ->
be_true(false).

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build/packages/gleeunit/src/gleeunit_ffi.erl Normal file
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-module(gleeunit_ffi).
-export([find_files/2, run_eunit/2]).
find_files(Pattern, In) ->
Results = filelib:wildcard(binary_to_list(Pattern), binary_to_list(In)),
lists:map(fun list_to_binary/1, Results).
run_eunit(Tests, Options) ->
case code:which(eunit) of
non_existing ->
gleeunit@internal@reporting:eunit_missing();
_ ->
case eunit:test(Tests, Options) of
ok -> {ok, nil};
error -> {error, nil};
{error, Term} -> {error, Term}
end
end.

100
build/packages/gleeunit/src/gleeunit_ffi.mjs Normal file
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import { readFileSync } from "node:fs";
import { Result$Ok, Result$Error } from "./gleam.mjs";
import * as reporting from "./gleeunit/internal/reporting.mjs";
export function read_file(path) {
try {
return Result$Ok(readFileSync(path));
} catch {
return Result$Error(undefined);
}
}
async function* gleamFiles(directory) {
for (let entry of await read_dir(directory)) {
let path = join_path(directory, entry);
if (path.endsWith(".gleam")) {
yield path;
} else {
try {
yield* gleamFiles(path);
} catch (error) {
// Could not read directory, assume it's a file
}
}
}
}
async function readRootPackageName() {
let toml = await async_read_file("gleam.toml", "utf-8");
for (let line of toml.split("\n")) {
let matches = line.match(/\s*name\s*=\s*"([a-z][a-z0-9_]*)"/); // Match regexp in compiler-cli/src/new.rs in validate_name()
if (matches) return matches[1];
}
throw new Error("Could not determine package name from gleam.toml");
}
export async function main() {
let state = reporting.new_state();
let packageName = await readRootPackageName();
let dist = `../${packageName}/`;
for await (let path of await gleamFiles("test")) {
let js_path = path.slice("test/".length).replace(".gleam", ".mjs");
let module = await import(join_path(dist, js_path));
for (let fnName of Object.keys(module)) {
if (!fnName.endsWith("_test")) continue;
try {
await module[fnName]();
state = reporting.test_passed(state);
} catch (error) {
let moduleName = js_path.slice(0, -4);
state = reporting.test_failed(state, moduleName, fnName, error);
}
}
}
const status = reporting.finished(state);
exit(status);
}
export function crash(message) {
throw new Error(message);
}
function exit(code) {
if (globalThis.Deno) {
Deno.exit(code);
} else {
process.exit(code);
}
}
async function read_dir(path) {
if (globalThis.Deno) {
let items = [];
for await (let item of Deno.readDir(path, { withFileTypes: true })) {
items.push(item.name);
}
return items;
} else {
let { readdir } = await import("node:fs/promises");
return readdir(path);
}
}
function join_path(a, b) {
if (a.endsWith("/")) return a + b;
return a + "/" + b;
}
async function async_read_file(path) {
if (globalThis.Deno) {
return Deno.readTextFile(path);
} else {
let { readFile } = await import("node:fs/promises");
let contents = await readFile(path);
return contents.toString();
}
}

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%% A formatter adapted from Sean Cribb's https://github.com/seancribbs/eunit_formatters
-module(gleeunit_progress).
-define(NOTEST, true).
%% eunit_listener callbacks
-export([
init/1, handle_begin/3, handle_end/3, handle_cancel/3, terminate/2,
start/0, start/1
]).
-define(reporting, gleeunit@internal@reporting).
start() ->
start([]).
start(Options) ->
eunit_listener:start(?MODULE, Options).
init(_Options) ->
?reporting:new_state().
handle_begin(_test_or_group, _data, State) ->
State.
handle_end(group, _data, State) ->
State;
handle_end(test, Data, State) ->
{AtomModule, AtomFunction, _Arity} = proplists:get_value(source, Data),
Module = erlang:atom_to_binary(AtomModule),
Function = erlang:atom_to_binary(AtomFunction),
% EUnit swallows stdout, so print it to make debugging easier.
case proplists:get_value(output, Data) of
undefined -> ok;
<<>> -> ok;
Out -> gleam@io:print(Out)
end,
case proplists:get_value(status, Data) of
ok ->
?reporting:test_passed(State);
{skipped, _Reason} ->
?reporting:test_skipped(State, Module, Function);
{error, {_, Exception, _Stack}} ->
?reporting:test_failed(State, Module, Function, Exception)
end.
handle_cancel(_test_or_group, Data, State) ->
?reporting:test_failed(State, <<"gleeunit">>, <<"main">>, Data).
terminate({ok, _Data}, State) ->
?reporting:finished(State),
ok;
terminate({error, Reason}, State) ->
?reporting:finished(State),
io:fwrite("
Eunit failed:
~80p
This is probably a bug in gleeunit. Please report it.
", [Reason]),
sync_end(error).
sync_end(Result) ->
receive
{stop, Reference, ReplyTo} ->
ReplyTo ! {result, Reference, Result},
ok
end.