2 files changed, 105 insertions, 96 deletions
diff --git a/test/gleam/iodata_test.gleam b/test/gleam/iodata_test.gleam
deleted file mode 100644
index bc4fe98..0000000
--- a/test/gleam/iodata_test.gleam
+++ /dev/null
@@ -1,96 +0,0 @@
-import gleam/should
-import gleam/iodata
-
-pub fn iodata_test() {
-  let data = iodata.new("ello")
-    |> iodata.append(",")
-    |> iodata.append(" world!")
-    |> iodata.prepend("H")
-
-  data
-  |> iodata.to_string
-  |> should.equal("Hello, world!")
-
-  data
-  |> iodata.byte_size
-  |> should.equal(13)
-
-  let data = iodata.new("ello")
-    |> iodata.append_iodata(iodata.new(","))
-    |> iodata.append_iodata(
-      iodata.concat([iodata.new(" wo"), iodata.new("rld!")]),
-    )
-    |> iodata.prepend_iodata(iodata.new("H"))
-
-  data
-  |> iodata.to_string
-  |> should.equal("Hello, world!")
-
-  data
-  |> iodata.byte_size
-  |> should.equal(13)
-}
-
-pub fn lowercase_test() {
-  ["Gleam", "Gleam"]
-  |> iodata.from_strings
-  |> iodata.lowercase
-  |> iodata.to_string
-  |> should.equal("gleamgleam")
-}
-
-pub fn uppercase_test() {
-  ["Gleam", "Gleam"]
-  |> iodata.from_strings
-  |> iodata.uppercase
-  |> iodata.to_string
-  |> should.equal("GLEAMGLEAM")
-}
-
-pub fn split_test() {
-  "Gleam,Erlang,Elixir"
-  |> iodata.new
-  |> iodata.split(",")
-  |> should.equal(
-    [iodata.new("Gleam"), iodata.new("Erlang"), iodata.new("Elixir")],
-  )
-
-  ["Gleam, Erl", "ang,Elixir"]
-  |> iodata.from_strings
-  |> iodata.split(", ")
-  |> should.equal(
-    [iodata.new("Gleam"), iodata.from_strings(["Erl", "ang,Elixir"])],
-  )
-}
-
-pub fn is_equal_test() {
-  iodata.new("12")
-  |> iodata.is_equal(iodata.from_strings(["1", "2"]))
-  |> should.be_true
-
-  iodata.new("12")
-  |> iodata.is_equal(iodata.new("12"))
-  |> should.be_true
-
-  iodata.new("12")
-  |> iodata.is_equal(iodata.new("2"))
-  |> should.be_false
-}
-
-pub fn is_empty_test() {
-  iodata.new("")
-  |> iodata.is_empty
-  |> should.be_true
-
-  iodata.new("12")
-  |> iodata.is_empty
-  |> should.be_false
-
-  iodata.from_strings([])
-  |> iodata.is_empty
-  |> should.be_true
-
-  iodata.from_strings(["", ""])
-  |> iodata.is_empty
-  |> should.be_true
-}
diff --git a/test/gleam/string_builder_test.gleam b/test/gleam/string_builder_test.gleam
new file mode 100644
index 0000000..b2e30cf
--- /dev/null
+++ b/test/gleam/string_builder_test.gleam
@@ -0,0 +1,105 @@
+import gleam/should
+import gleam/string_builder
+
+pub fn string_builder_test() {
+  let data = string_builder.from_string("ello")
+    |> string_builder.append(",")
+    |> string_builder.append(" world!")
+    |> string_builder.prepend("H")
+
+  data
+  |> string_builder.to_string
+  |> should.equal("Hello, world!")
+
+  data
+  |> string_builder.byte_size
+  |> should.equal(13)
+
+  let data = string_builder.from_string("ello")
+    |> string_builder.append_builder(string_builder.from_string(","))
+    |> string_builder.append_builder(
+      string_builder.concat(
+        [string_builder.from_string(" wo"), string_builder.from_string("rld!")],
+      ),
+    )
+    |> string_builder.prepend_builder(string_builder.from_string("H"))
+
+  data
+  |> string_builder.to_string
+  |> should.equal("Hello, world!")
+
+  data
+  |> string_builder.byte_size
+  |> should.equal(13)
+}
+
+pub fn lowercase_test() {
+  ["Gleam", "Gleam"]
+  |> string_builder.from_strings
+  |> string_builder.lowercase
+  |> string_builder.to_string
+  |> should.equal("gleamgleam")
+}
+
+pub fn uppercase_test() {
+  ["Gleam", "Gleam"]
+  |> string_builder.from_strings
+  |> string_builder.uppercase
+  |> string_builder.to_string
+  |> should.equal("GLEAMGLEAM")
+}
+
+pub fn split_test() {
+  "Gleam,Erlang,Elixir"
+  |> string_builder.from_string
+  |> string_builder.split(",")
+  |> should.equal(
+    [
+      string_builder.from_string("Gleam"),
+      string_builder.from_string("Erlang"),
+      string_builder.from_string("Elixir"),
+    ],
+  )
+
+  ["Gleam, Erl", "ang,Elixir"]
+  |> string_builder.from_strings
+  |> string_builder.split(", ")
+  |> should.equal(
+    [
+      string_builder.from_string("Gleam"),
+      string_builder.from_strings(["Erl", "ang,Elixir"]),
+    ],
+  )
+}
+
+pub fn is_equal_test() {
+  string_builder.from_string("12")
+  |> string_builder.is_equal(string_builder.from_strings(["1", "2"]))
+  |> should.be_true
+
+  string_builder.from_string("12")
+  |> string_builder.is_equal(string_builder.from_string("12"))
+  |> should.be_true
+
+  string_builder.from_string("12")
+  |> string_builder.is_equal(string_builder.from_string("2"))
+  |> should.be_false
+}
+
+pub fn is_empty_test() {
+  string_builder.from_string("")
+  |> string_builder.is_empty
+  |> should.be_true
+
+  string_builder.from_string("12")
+  |> string_builder.is_empty
+  |> should.be_false
+
+  string_builder.from_strings([])
+  |> string_builder.is_empty
+  |> should.be_true
+
+  string_builder.from_strings(["", ""])
+  |> string_builder.is_empty
+  |> should.be_true
+}