:sparkles: Create a test app for property diff regressions.

4 files changed, 92 insertions, 0 deletions

diff --git a/test-apps/bool-property-toggle/README.md b/test-apps/bool-property-toggle/README.md
new file mode 100644
index 0000000..210e6aa
--- /dev/null
+++ b/test-apps/bool-property-toggle/README.md
@@ -0,0 +1,2 @@
+Properties are diffed slightly differently to attributes. This test makes sure
+there are no regressions that cause properties to be removed every other render.
diff --git a/test-apps/bool-property-toggle/gleam.toml b/test-apps/bool-property-toggle/gleam.toml
new file mode 100644
index 0000000..4a824db
--- /dev/null
+++ b/test-apps/bool-property-toggle/gleam.toml
@@ -0,0 +1,12 @@
+name = "app"
+version = "1.0.0"
+target = "javascript"
+
+[dependencies]
+gleam_stdlib = "~> 0.36"
+lustre = { path = "../../" }
+lustre_ui = "~> 0.4"
+
+[dev-dependencies]
+gleeunit = "~> 1.0"
+lustre_dev_tools = "~> 1.0"
diff --git a/test-apps/bool-property-toggle/manifest.toml b/test-apps/bool-property-toggle/manifest.toml
new file mode 100644
index 0000000..74a1b75
--- /dev/null
+++ b/test-apps/bool-property-toggle/manifest.toml
@@ -0,0 +1,33 @@
+# This file was generated by Gleam
+# You typically do not need to edit this file
+
+packages = [
+  { name = "argv", version = "1.0.2", build_tools = ["gleam"], requirements = [], otp_app = "argv", source = "hex", outer_checksum = "BA1FF0929525DEBA1CE67256E5ADF77A7CDDFE729E3E3F57A5BDCAA031DED09D" },
+  { name = "filepath", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "filepath", source = "hex", outer_checksum = "EFB6FF65C98B2A16378ABC3EE2B14124168C0CE5201553DE652E2644DCFDB594" },
+  { name = "gleam_community_ansi", version = "1.4.0", build_tools = ["gleam"], requirements = ["gleam_community_colour", "gleam_stdlib"], otp_app = "gleam_community_ansi", source = "hex", outer_checksum = "FE79E08BF97009729259B6357EC058315B6FBB916FAD1C2FF9355115FEB0D3A4" },
+  { name = "gleam_community_colour", version = "1.4.0", build_tools = ["gleam"], requirements = ["gleam_json", "gleam_stdlib"], otp_app = "gleam_community_colour", source = "hex", outer_checksum = "795964217EBEDB3DA656F5EB8F67D7AD22872EB95182042D3E7AFEF32D3FD2FE" },
+  { name = "gleam_erlang", version = "0.25.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleam_erlang", source = "hex", outer_checksum = "054D571A7092D2A9727B3E5D183B7507DAB0DA41556EC9133606F09C15497373" },
+  { name = "gleam_json", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "thoas"], otp_app = "gleam_json", source = "hex", outer_checksum = "8B197DD5D578EA6AC2C0D4BDC634C71A5BCA8E7DB5F47091C263ECB411A60DF3" },
+  { name = "gleam_otp", version = "0.10.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "0B04FE915ACECE539B317F9652CAADBBC0F000184D586AAAF2D94C100945D72B" },
+  { name = "gleam_package_interface", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_json", "gleam_stdlib"], otp_app = "gleam_package_interface", source = "hex", outer_checksum = "52A721BCA972C8099BB881195D821AAA64B9F2655BECC102165D5A1097731F01" },
+  { name = "gleam_stdlib", version = "0.36.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "C0D14D807FEC6F8A08A7C9EF8DFDE6AE5C10E40E21325B2B29365965D82EB3D4" },
+  { name = "glearray", version = "0.2.1", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "glearray", source = "hex", outer_checksum = "908154F695D330E06A37FAB2C04119E8F315D643206F8F32B6A6C14A8709FFF4" },
+  { name = "gleeunit", version = "1.1.2", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "72CDC3D3F719478F26C4E2C5FED3E657AC81EC14A47D2D2DEBB8693CA3220C3B" },
+  { name = "glint", version = "0.18.0", build_tools = ["gleam"], requirements = ["gleam_community_ansi", "gleam_community_colour", "gleam_stdlib", "snag"], otp_app = "glint", source = "hex", outer_checksum = "BB0F14643CC51C069A5DC6E9082EAFCD9967AFD1C9CC408803D1A40A3FD43B54" },
+  { name = "lustre", version = "4.1.5", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_json", "gleam_otp", "gleam_stdlib"], source = "local", path = "../.." },
+  { name = "lustre_dev_tools", version = "1.1.5", build_tools = ["gleam"], requirements = ["argv", "filepath", "gleam_community_ansi", "gleam_erlang", "gleam_json", "gleam_otp", "gleam_package_interface", "gleam_stdlib", "glint", "simplifile", "spinner", "tom"], otp_app = "lustre_dev_tools", source = "hex", outer_checksum = "CA6C10177B66C4FBE8F56B37973C7BB312A8622248D5489957B364FF2C0700AE" },
+  { name = "lustre_ui", version = "0.6.0", build_tools = ["gleam"], requirements = ["gleam_community_colour", "gleam_json", "gleam_stdlib", "lustre"], otp_app = "lustre_ui", source = "hex", outer_checksum = "FA1F9E89D89CDD5DF376ED86ABA8A38441CB2E664CD4D402F22A49DA4D7BB56D" },
+  { name = "repeatedly", version = "2.1.1", build_tools = ["gleam"], requirements = [], otp_app = "repeatedly", source = "hex", outer_checksum = "38808C3EC382B0CD981336D5879C24ECB37FCB9C1D1BD128F7A80B0F74404D79" },
+  { name = "simplifile", version = "1.7.0", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "1D5DFA3A2F9319EC85825F6ED88B8E449F381B0D55A62F5E61424E748E7DDEB0" },
+  { name = "snag", version = "0.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "snag", source = "hex", outer_checksum = "54D32E16E33655346AA3E66CBA7E191DE0A8793D2C05284E3EFB90AD2CE92BCC" },
+  { name = "spinner", version = "1.1.0", build_tools = ["gleam"], requirements = ["gleam_community_ansi", "gleam_erlang", "gleam_stdlib", "glearray", "repeatedly"], otp_app = "spinner", source = "hex", outer_checksum = "200BA3D4A04D468898E63C0D316E23F526E02514BC46454091975CB5BAE41E8F" },
+  { name = "thoas", version = "0.4.1", build_tools = ["rebar3"], requirements = [], otp_app = "thoas", source = "hex", outer_checksum = "4918D50026C073C4AB1388437132C77A6F6F7C8AC43C60C13758CC0ADCE2134E" },
+  { name = "tom", version = "0.3.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "tom", source = "hex", outer_checksum = "0831C73E45405A2153091226BF98FB485ED16376988602CC01A5FD086B82D577" },
+]
+
+[requirements]
+gleam_stdlib = { version = "~> 0.36" }
+gleeunit = { version = "~> 1.0" }
+lustre = { path = "../../" }
+lustre_dev_tools = { version = "~> 1.0" }
+lustre_ui = { version = "~> 0.4" }
diff --git a/test-apps/bool-property-toggle/src/app.gleam b/test-apps/bool-property-toggle/src/app.gleam
new file mode 100644
index 0000000..d18e189
--- /dev/null
+++ b/test-apps/bool-property-toggle/src/app.gleam
@@ -0,0 +1,45 @@
+import lustre
+import lustre/attribute
+import lustre/effect
+import lustre/element
+import lustre/element/html
+import lustre/event
+
+pub type Model =
+  Nil
+
+fn init(_flags) -> #(Model, effect.Effect(Msg)) {
+  #(Nil, effect.none())
+}
+
+pub type Msg {
+  UserPressedButton
+}
+
+fn update(model: Model, msg: Msg) -> #(Model, effect.Effect(Msg)) {
+  case msg {
+    UserPressedButton -> {
+      #(model, effect.none())
+    }
+  }
+}
+
+pub fn view(_model: Model) -> element.Element(Msg) {
+  html.div([], [
+    html.button([event.on_click(UserPressedButton)], [
+      element.text("raise event"),
+    ]),
+    html.div([], [
+      html.button([attribute.disabled(True)], [
+        element.text("I should always be disabled"),
+      ]),
+    ]),
+  ])
+}
+
+pub fn main() {
+  let app = lustre.application(init, update, view)
+
+  let assert Ok(_) = lustre.start(app, "#app", Nil)
+  Nil
+}