1 files changed, 20 insertions, 0 deletions
diff --git a/src/std/expect.gleam b/src/std/expect.gleam
new file mode 100644
index 0000000..5ea6a93
--- /dev/null
+++ b/src/std/expect.gleam
@@ -0,0 +1,20 @@
+// TODO: Move this module into another package so it can be used as a
+// dep only in test.
+
+pub external type Expectation;
+
+pub external fn equal(a, a) -> Expectation = "gleam__stdlib" "expect_equal";
+
+pub external fn not_equal(a, a) -> Expectation = "gleam__stdlib" "expect_not_equal";
+
+pub external fn true(Bool) -> Expectation = "gleam__stdlib" "expect_true";
+
+pub external fn false(Bool) -> Expectation = "gleam__stdlib" "expect_false";
+
+pub external fn is_ok(Result(a, b)) -> Expectation = "gleam__stdlib" "expect_is_ok";
+
+pub external fn is_error(Result(a, b)) -> Expectation = "gleam__stdlib" "expect_is_error";
+
+pub fn fail() {
+  true(False)
+}