feat: add tests

.env

@@ -0,0 +1,6 @@
+# Used for testing
+SIMPLE=ABC
+DOUBLE="DEF"
+SINGLE="GHI"
+
+OVERWRITE="BAR"

.lune/test.luau

@@ -294,7 +294,7 @@ end
 local function printErr(err: string, traceback: string)
 	stdio.ewrite(stdio.color("red"))
 	stdio.ewrite(stdio.style("bold"))
-	stdio.ewrite(err .. "\n\n")
+	stdio.ewrite(tostring(err) .. "\n\n")
 	stdio.ewrite(stdio.style("reset"))
 	stdio.ewrite(stdio.style("dim"))
 	stdio.ewrite("[Stack Begin]\n")

.vscode/settings.json

@@ -2,6 +2,6 @@
   "luau-lsp.require.mode": "relativeToFile",
   "luau-lsp.require.directoryAliases": {
     "@lune/": "~/.lune/.typedefs/0.8.4/",
-    "@testing/": "submodules/util.luau/.lune/test-lib/"
+    "@testing/": ".lune/test-lib/"
   }
 }

tests/envs/path.env

@@ -0,0 +1 @@
+CUSTOM_PATH="THIS IS A CUSTOM PATH"

tests/load.test.luau

@@ -0,0 +1,32 @@
+local describe = require("@testing/describe")
+local test = require("@testing/test")
+local assertEq = require("@testing/assertEq")
+local process = require("@lune/process")
+
+local dotenv = require("../lib")
+
+describe("Populate process.env", function()
+	test("Normal", function()
+		dotenv:load()
+		assertEq(process.env.SIMPLE, "ABC")
+		assertEq(process.env.DOUBLE, "DEF")
+		assertEq(process.env.SINGLE, "GHI")
+	end)
+
+	test("Overwrite TRUE", function()
+		process.env.OVERWRITE = "FOO"
+		dotenv:load(true)
+		assertEq(process.env.OVERWRITE, "BAR")
+	end)
+
+	test("Overwrite FALSE", function()
+		process.env.OVERWRITE = "FOO"
+		dotenv:load(false)
+		assertEq(process.env.OVERWRITE, "FOO")
+	end)
+
+	test("Custom Path", function()
+		dotenv:load(false, "tests/envs/path.env")
+		assertEq(process.env.CUSTOM_PATH, "THIS IS A CUSTOM PATH")
+	end)
+end)