From ee09270191cf0d058951d075b74aa4ef439d713b Mon Sep 17 00:00:00 2001
From: Damian Tarnawski <gthetarnav@gmail.com>
Date: Thu, 11 Sep 2025 23:42:40 +0200
Subject: Improve inlay hint algorithm and add more tests (fixes #920)

---
 tests/inlay_hints_test.odin | 80 ++++++++++++++++++++-------------------------
 1 file changed, 35 insertions(+), 45 deletions(-)

(limited to 'tests')

diff --git a/tests/inlay_hints_test.odin b/tests/inlay_hints_test.odin
index 9d9d074..ab2cd1b 100644
--- a/tests/inlay_hints_test.odin
+++ b/tests/inlay_hints_test.odin
@@ -10,30 +10,12 @@ ast_inlay_hints_default_params :: proc(t: ^testing.T) {
 	source := test.Source {
 		main     = `package test
 
-		my_function :: proc(a := false, b := 42) {}
+		foo :: proc(a := false, b := 42) {}
+		bar :: proc(a: int, b := false, c := 42) {}
 
 		main :: proc() {
-			my_function([[a = false]][[, b = 42]])
-		}
-		`,
-		packages = {},
-		config = {
-			enable_inlay_hints_default_params = true,
-		},
-	}
-
-	test.expect_inlay_hints(t, &source)
-}
-
-@(test)
-ast_inlay_hints_default_params_after_required :: proc(t: ^testing.T) {
-	source := test.Source {
-		main     = `package test
-
-		my_function :: proc(a: int, b := false, c := 42) {}
-
-		main :: proc() {
-			my_function(1[[, b = false]][[, c = 42]])
+			foo([[a = false]][[, b = 42]])
+			bar(1[[, b = false]][[, c = 42]])
 		}
 		`,
 		packages = {},
@@ -50,10 +32,13 @@ ast_inlay_hints_default_params_after_named :: proc(t: ^testing.T) {
 	source := test.Source {
 		main     = `package test
 
-		my_function :: proc(a: int, b := false, c := 42) {}
+		my_function :: proc(a: int = 1, b := false, c := 42) {}
 
 		main :: proc() {
 			my_function(a=1[[, b = false]][[, c = 42]])
+			my_function([[a = ]]1, c=42[[, b = false]])
+			my_function(c=42, a=1[[, b = false]])
+			my_function(b=true, a=1[[, c = 42]])
 		}
 		`,
 		packages = {},
@@ -66,26 +51,6 @@ ast_inlay_hints_default_params_after_named :: proc(t: ^testing.T) {
 	test.expect_inlay_hints(t, &source)
 }
 
-@(test)
-ast_inlay_hints_default_params_named_ooo :: proc(t: ^testing.T) {
-	source := test.Source {
-		main     = `package test
-
-		my_function :: proc(a: int, b := false, c := 42) {}
-
-		main :: proc() {
-			my_function(1, c=42[[, b = false]])
-		}
-		`,
-		packages = {},
-		config = {
-			enable_inlay_hints_default_params = true,
-		},
-	}
-
-	test.expect_inlay_hints(t, &source)
-}
-
 @(test)
 ast_inlay_hints_params :: proc(t: ^testing.T) {
 	source := test.Source {
@@ -178,15 +143,40 @@ ast_inlay_hints_variadic_params :: proc(t: ^testing.T) {
 	source := test.Source {
 		main     = `package test
 
-		variadic_func :: proc(args: ..int) {}
+		variadic_func :: proc(args: ..int, default := 2) {}
 
 		main :: proc() {
-			variadic_func([[args = ]]1, 2, 3)
+			variadic_func([[args = ]]1, 2, 3[[, default = 2]])
+			variadic_func([[args = ]]1, 2, default=3)
 		}
 		`,
 		packages = {},
 		config = {
 			enable_inlay_hints_params = true,
+			enable_inlay_hints_default_params = true,
+		},
+	}
+
+	test.expect_inlay_hints(t, &source)
+}
+
+@(test)
+ast_inlay_hints_multi_return_params :: proc(t: ^testing.T) {
+	source := test.Source {
+		main     = `package test
+
+		func :: proc (a: int, b: int = 2, c := 3) {}
+
+		two :: proc () -> (int, int) {return 1, 2}
+
+		main :: proc() {
+			func([[a, b = ]]two()[[, c = 3]])
+		}
+		`,
+		packages = {},
+		config = {
+			enable_inlay_hints_params = true,
+			enable_inlay_hints_default_params = true,
 		},
 	}
 
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