diff --git a/spec/mixin/content/arguments/error/args_for_argless/error-libsass b/spec/mixin/content/arguments/error/args_for_argless/error-libsass
new file mode 100644
index 0000000000..50cf01e582
--- /dev/null
+++ b/spec/mixin/content/arguments/error/args_for_argless/error-libsass
@@ -0,0 +1,7 @@
+Error: wrong number of arguments (1 for 0) for `@content'
+        on line 2:3 of test.scss, in mixin `@content`
+        from line 2:3 of test.scss, in mixin `mixin`
+        from line 5:10 of test.scss
+>>   @content(value);
+
+   --^
diff --git a/spec/mixin/content/arguments/error/expected_args/error-libsass b/spec/mixin/content/arguments/error/expected_args/error-libsass
new file mode 100644
index 0000000000..5bb81db8a2
--- /dev/null
+++ b/spec/mixin/content/arguments/error/expected_args/error-libsass
@@ -0,0 +1,6 @@
+Error: Mixin @content is missing argument $arg1.
+        on line 2:3 of test.scss, in mixin `mixin`
+        from line 5:10 of test.scss
+>>   @content;
+
+   --^
diff --git a/spec/mixin/content/arguments/error/invalid_arglist/error-libsass b/spec/mixin/content/arguments/error/invalid_arglist/error-libsass
new file mode 100644
index 0000000000..80097d0f4e
--- /dev/null
+++ b/spec/mixin/content/arguments/error/invalid_arglist/error-libsass
@@ -0,0 +1,5 @@
+Error: Invalid CSS after "...) using ($arg1:": expected expression (e.g. 1px, bold), was ") {}"
+        on line 5:32 of test.scss
+>> @include mixin() using ($arg1: ) {}
+
+   -------------------------------^
diff --git a/spec/mixin/content/arguments/error/invalid_named_arg/error-libsass b/spec/mixin/content/arguments/error/invalid_named_arg/error-libsass
new file mode 100644
index 0000000000..10e46182e7
--- /dev/null
+++ b/spec/mixin/content/arguments/error/invalid_named_arg/error-libsass
@@ -0,0 +1,7 @@
+Error: Mixin @content has no parameter named $invalid
+        on line 2:12 of test.scss, in mixin `@content`
+        from line 2:3 of test.scss, in mixin `mixin`
+        from line 5:10 of test.scss
+>>   @content($invalid: value);
+
+   -----------^
diff --git a/spec/mixin/content/arguments/error/missing_arglist/error-libsass b/spec/mixin/content/arguments/error/missing_arglist/error-libsass
new file mode 100644
index 0000000000..303ec3f87b
--- /dev/null
+++ b/spec/mixin/content/arguments/error/missing_arglist/error-libsass
@@ -0,0 +1,5 @@
+Error: Invalid CSS after "...ude mixin using": expected "(", was "{}"
+        on line 5:16 of test.scss
+>> @include mixin using {}
+
+   ---------------^
diff --git a/spec/mixin/content/arguments/error/missing_parens/error-libsass b/spec/mixin/content/arguments/error/missing_parens/error-libsass
new file mode 100644
index 0000000000..ecc7e97148
--- /dev/null
+++ b/spec/mixin/content/arguments/error/missing_parens/error-libsass
@@ -0,0 +1,5 @@
+Error: Invalid CSS after "...ude mixin using": expected "(", was "$arg1 {}"
+        on line 5:16 of test.scss
+>> @include mixin using $arg1 {}
+
+   ---------------^
diff --git a/spec/mixin/content/arguments/error/missing_using/error-libsass b/spec/mixin/content/arguments/error/missing_using/error-libsass
new file mode 100644
index 0000000000..0255fa37bf
--- /dev/null
+++ b/spec/mixin/content/arguments/error/missing_using/error-libsass
@@ -0,0 +1,5 @@
+Error: Invalid CSS after "@include mixin()": expected ";", was "() {}"
+        on line 5:16 of test.scss
+>> @include mixin() () {}
+
+   ---------------^
diff --git a/spec/mixin/content/arguments/error/too_few_args/error-libsass b/spec/mixin/content/arguments/error/too_few_args/error-libsass
new file mode 100644
index 0000000000..23b74e27ad
--- /dev/null
+++ b/spec/mixin/content/arguments/error/too_few_args/error-libsass
@@ -0,0 +1,6 @@
+Error: Mixin @content is missing argument $arg2.
+        on line 2:3 of test.scss, in mixin `mixin`
+        from line 5:10 of test.scss
+>>   @content(1);
+
+   --^
diff --git a/spec/mixin/content/arguments/error/too_many_args/error-libsass b/spec/mixin/content/arguments/error/too_many_args/error-libsass
new file mode 100644
index 0000000000..c938f68bd1
--- /dev/null
+++ b/spec/mixin/content/arguments/error/too_many_args/error-libsass
@@ -0,0 +1,7 @@
+Error: wrong number of arguments (3 for 2) for `@content'
+        on line 2:3 of test.scss, in mixin `@content`
+        from line 2:3 of test.scss, in mixin `mixin`
+        from line 5:10 of test.scss
+>>   @content(1, 2, 3);
+
+   --^
diff --git a/spec/mixin/content/arguments/error/using_without_block/error-libsass b/spec/mixin/content/arguments/error/using_without_block/error-libsass
new file mode 100644
index 0000000000..8d7b53587c
--- /dev/null
+++ b/spec/mixin/content/arguments/error/using_without_block/error-libsass
@@ -0,0 +1,5 @@
+Error: Invalid CSS after "... mixin using ()": expected "{", was ";"
+        on line 5:23 of test.scss
+>> @include mixin using ();
+
+   ----------------------^
diff --git a/spec/mixin/content/arguments/options.yml b/spec/mixin/content/arguments/options.yml
index a3bd2971e5..675cc0eb4e 100644
--- a/spec/mixin/content/arguments/options.yml
+++ b/spec/mixin/content/arguments/options.yml
@@ -1,5 +1,3 @@
 ---
 :ignore_for:
 - ruby-sass
-:todo:
-- libsass # sass/libsass#2723
diff --git a/spec/mixin/content/arguments/receiving/output-libsass.css b/spec/mixin/content/arguments/receiving/output-libsass.css
new file mode 100644
index 0000000000..ec688ca36a
--- /dev/null
+++ b/spec/mixin/content/arguments/receiving/output-libsass.css
@@ -0,0 +1,28 @@
+with-defaults nothing-passed {
+  arg1: value1;
+  arg2: value2;
+}
+with-defaults partial-override {
+  arg1: value1;
+  arg2: other2;
+}
+with-defaults total-override {
+  arg1: other1;
+  arg2: other2;
+}
+
+with-splat nothing-passed {
+  positional: ();
+  keywords: ();
+}
+with-splat positional-passed {
+  positional: value1, value2, value3;
+  keywords: ();
+}
+with-splat named-passed {
+  keywords: (arg1: value1, arg2: value2);
+}
+with-splat both-passed {
+  positional: value1;
+  keywords: (arg2: value2);
+}