Test the rest of the sring polyfills

.tests/strings/str_padend.test.lua

@@ -1,7 +1,6 @@
-expose("", function()
+local polyfill = require("worldeditadditions.utils.strings.polyfill")
-	local polyfill = require("worldeditadditions.utils.strings.polyfill")
 	
-	describe("str_padend", function()
+describe("str_padend", function()
 	it("should pad a string", function()
 		assert.are.equal(
 			polyfill.str_padend("test", 5, " "),
@@ -38,5 +37,4 @@ expose("", function()
 			"10000"
 		)
 	end)
-	end)
 end)

.tests/strings/str_padstart.test.lua

@@ -0,0 +1,40 @@
+local polyfill = require("worldeditadditions.utils.strings.polyfill")
+	
+describe("str_padstart", function()
+	it("should pad a string", function()
+		assert.are.equal(
+			polyfill.str_padstart("test", 5, " "),
+			" test"
+		)
+	end)
+	it("should pad a different string", function()
+		assert.are.equal(
+			polyfill.str_padstart("yay", 4, " "),
+			" yay"
+		)
+	end)
+	it("should pad a string with multiple characters", function()
+		assert.are.equal(
+			polyfill.str_padstart("test", 10, " "),
+			"      test"
+		)
+	end)
+	it("should not pad a long string", function()
+		assert.are.equal(
+			polyfill.str_padstart("testtest", 5, " "),
+			"testtest"
+		)
+	end)
+	it("should pad with other characters", function()
+		assert.are.equal(
+			polyfill.str_padstart("1", 2, "0"),
+			"01"
+		)
+	end)
+	it("should pad with multiple other characters", function()
+		assert.are.equal(
+			polyfill.str_padstart("1", 5, "0"),
+			"00001"
+		)
+	end)
+end)

.tests/strings/str_starts.test.lua

@@ -0,0 +1,40 @@
+local polyfill = require("worldeditadditions.utils.strings.polyfill")
+
+describe("str_starts", function()
+	it("should return true for a single character", function()
+		assert.are.equal(
+			polyfill.str_starts("test", "t"),
+			true
+		)
+	end)
+	it("should return true for a multiple characters", function()
+		assert.are.equal(
+			polyfill.str_starts("test", "te"),
+			true
+		)
+	end)
+	it("should return true for identical strings", function()
+		assert.are.equal(
+			polyfill.str_starts("test", "test"),
+			true
+		)
+	end)
+	it("should return false for a single character ", function()
+		assert.are.equal(
+			polyfill.str_starts("test", "y"),
+			false
+		)
+	end)
+	it("should return false for a character present elsewherer", function()
+		assert.are.equal(
+			polyfill.str_starts("test", "e"),
+			false
+		)
+	end)
+	it("should return false for another substring", function()
+		assert.are.equal(
+			polyfill.str_starts("test", "est"),
+			false
+		)
+	end)
+end)

.tests/strings/trim.test.lua

@@ -0,0 +1,46 @@
+local polyfill = require("worldeditadditions.utils.strings.polyfill")
+
+describe("trim", function()
+	it("work for a string that's already trimmed", function()
+		assert.are.equal(
+			polyfill.trim("test"),
+			"test"
+		)
+	end)
+	it("trim from the start", function()
+		assert.are.equal(
+			polyfill.trim("     test"),
+			"test"
+		)
+	end)
+	it("trim from the end", function()
+		assert.are.equal(
+			polyfill.trim("test     "),
+			"test"
+		)
+	end)
+	it("trim from both ends", function()
+		assert.are.equal(
+			polyfill.trim("   test     "),
+			"test"
+		)
+	end)
+	it("trim another string", function()
+		assert.are.equal(
+			polyfill.trim("yay    "),
+			"yay"
+		)
+	end)
+	it("trim tabs", function()
+		assert.are.equal(
+			polyfill.trim("//forest		"),
+			"//forest"
+		)
+	end)
+	it("avoid trimming spaces in the middle", function()
+		assert.are.equal(
+			polyfill.trim("te   st     "),
+			"te   st"
+		)
+	end)
+end)

worldeditadditions/utils/strings/polyfill.lua

@@ -42,6 +42,9 @@ if worldeditadditions then
 	worldeditadditions.trim = trim
 else
     return {
-        str_padend = str_padend
+        str_padend = str_padend,
+        str_padstart = str_padstart,
+		str_starts = str_starts,
+		trim = trim
     }
 end