diff --git a/tests/00_err-lex.test b/tests/00_err-lex.test
index 54bcf30..b1101ad 100644
--- a/tests/00_err-lex.test
+++ b/tests/00_err-lex.test
@@ -1 +1 @@
-~
+~ # Error on line 1 col 0: Unrecognized char "~".
diff --git a/tests/01_err-syntax.test b/tests/01_err-syntax.test
index 9e3d824..fdc5b8a 100644
--- a/tests/01_err-syntax.test
+++ b/tests/01_err-syntax.test
@@ -1 +1 @@
-a = 1312;
+a = 1312; # Error on line 1 col 2: Unbound variable "a".
diff --git a/tests/04_err-unbound-variable.test b/tests/04_err-unbound-variable.test
index c865854..34d694b 100644
--- a/tests/04_err-unbound-variable.test
+++ b/tests/04_err-unbound-variable.test
@@ -1 +1 @@
-foo = 1312; # Error on line 1 col 4 : unbound variable 'foo'
+foo = 1312; # Error on line 1 col 4: Unbound variable "foo".
diff --git a/tests/05_err-unbound-variable.test b/tests/05_err-unbound-variable.test
index 4b4aae0..da088d8 100644
--- a/tests/05_err-unbound-variable.test
+++ b/tests/05_err-unbound-variable.test
@@ -1 +1 @@
-int foo = bar; # Error on line 1 col 10: unbound variable 'bar'
\ No newline at end of file
+int foo = bar; # Error on line 1 col 10: Unbound variable "bar".
diff --git a/tests/06_warn-unassigned-variable.test b/tests/06_warn-unassigned-variable.test
index 7c6ab3c..cec8784 100644
--- a/tests/06_warn-unassigned-variable.test
+++ b/tests/06_warn-unassigned-variable.test
@@ -1,2 +1,2 @@
 int foo;
-int bar = foo; # Warning on line 2 col 10 : unassigned variable 'foo'
\ No newline at end of file
+int bar = foo; # Warning on line 2 col 10: Unassigned variable "foo".
diff --git a/tests/07_err-type-const.test b/tests/07_err-type-const.test
index b210293..b7b4e11 100644
--- a/tests/07_err-type-const.test
+++ b/tests/07_err-type-const.test
@@ -1 +1 @@
-int foo = true; # Error on line 1 col 10: expected int but given bool
\ No newline at end of file
+int foo = true; # Error on line 1 col 10: Expected int but given bool.
diff --git a/tests/08_err-type-variable.test b/tests/08_err-type-variable.test
index 4b6f4b4..b770043 100644
--- a/tests/08_err-type-variable.test
+++ b/tests/08_err-type-variable.test
@@ -1,2 +1,2 @@
 int foo = 1312;
-bool bar = foo; # Error on line 2 col 11: expected bool but given int
\ No newline at end of file
+bool bar = foo; # Error on line 2 col 11: Expected bool but given int.