diff --git a/.tests/parse/chance.test.lua b/.tests/parse/chance.test.lua
new file mode 100644
index 0000000..20e7210
--- /dev/null
+++ b/.tests/parse/chance.test.lua
@@ -0,0 +1,36 @@
+local parse_chance = require("worldeditadditions_core.utils.parse.chance")
+
+describe("parse.seed", function()
+	it("should work in 1-in-n mode by default", function()
+		local source = "50%"
+		
+		assert.are.equal(
+			2,
+			parse_chance(source)
+		)
+	end)
+	it("should work with a different value in 1-in-n mode", function()
+		local source = "25%"
+		
+		assert.are.equal(
+			4,
+			parse_chance(source)
+		)
+	end)
+	it("should work in weight mode", function()
+		local source = "50%"
+		
+		assert.are.equal(
+			2,
+			parse_chance(source, "weight")
+		)
+	end)
+	it("should work in weight mode with different number", function()
+		local source = "90%"
+		
+		assert.are.equal(
+			10,
+			parse_chance(source, "weight")
+		)
+	end)
+end)
diff --git a/.tests/parse/seed.test.lua b/.tests/parse/seed.test.lua
new file mode 100644
index 0000000..e82666f
--- /dev/null
+++ b/.tests/parse/seed.test.lua
@@ -0,0 +1,24 @@
+local parse_seed = require("worldeditadditions_core.utils.parse.seed")
+
+describe("parse.seed", function()
+	it("should work", function()
+		local source = "a test string"
+		
+		local result = parse_seed(source)
+		
+		assert.are.equal(
+			"number",
+			type(result)
+		)
+	end)
+	it("should work with a long string", function()
+		local source = "If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction. If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction. If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction. If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction. If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction. If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction. If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction. If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction. If it looks like a duck and quacks like a duck but it needs batteries, you probably have the wrong abstraction."
+		
+		local result = parse_seed(source)
+		
+		assert.are.equal(
+			"number",
+			type(result)
+		)
+	end)
+end)
diff --git a/worldeditadditions_core/utils/parse/chance.lua b/worldeditadditions_core/utils/parse/chance.lua
index 8e56de6..81ce14f 100644
--- a/worldeditadditions_core/utils/parse/chance.lua
+++ b/worldeditadditions_core/utils/parse/chance.lua
@@ -1,7 +1,7 @@
 
 --- Parses a chance value, and returns the 1-in-N value thereof.
--- @param	str				string	The string to parse.
--- @param	invert_percent	string	The operation mode. Valid modes: "1-in-n" (default), "weight". "1-in-n" refers to a 1-in-N chance of something happening (lower numbers mean greater likelihood). "weight", on the other hand, is instead a weighting that something will happen (higher numbers mean a greater likelihood).
+-- @param	str		string	The string to parse.
+-- @param	mode	string	The operation mode. Valid modes: "1-in-n" (default), "weight". "1-in-n" refers to a 1-in-N chance of something happening (lower numbers mean greater likelihood). "weight", on the other hand, is instead a weighting that something will happen (higher numbers mean a greater likelihood).
 -- @returns	number|nil	The 1-in-N chance if parsing was successful, otherwise nil.
 local function parse_chance(str, mode)
 	if not mode then mode = "1-in-n" end