prime

elixir/nth-prime/test/prime_test.exs

@@ -0,0 +1,33 @@
+defmodule PrimeTest do
+  use ExUnit.Case
+
+  test "first prime" do
+    assert Prime.nth(1) == 2
+  end
+
+  test "second prime" do
+    assert Prime.nth(2) == 3
+  end
+
+  test "sixth prime" do
+    assert Prime.nth(6) == 13
+  end
+
+  test "100th prime" do
+    assert Prime.nth(100) == 541
+  end
+
+  @tag :slow
+  test "big prime" do
+    assert Prime.nth(10001) == 104_743
+  end
+
+  @tag :slow
+  test "very big prime" do
+    assert Prime.nth(100001) == 1_299_721
+  end
+
+  test "there is no zeroth prime" do
+    catch_error(Prime.nth(0))
+  end
+end

elixir/nth-prime/test/test_helper.exs

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+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)