6 files changed, 20 insertions, 0 deletions
diff --git a/tests/math/subtraction/bad_arity.neb b/tests/math/subtraction/bad_arity.neb
new file mode 100644
index 0000000..4fd1a01
--- /dev/null
+++ b/tests/math/subtraction/bad_arity.neb
@@ -0,0 +1,2 @@
+(-)
+; panic! [1] '-': expected [1+] arguments, received 0
diff --git a/tests/math/subtraction/bad_type_bool.neb b/tests/math/subtraction/bad_type_bool.neb
new file mode 100644
index 0000000..64a8a7b
--- /dev/null
+++ b/tests/math/subtraction/bad_type_bool.neb
@@ -0,0 +1,2 @@
+(- 7.34 #true)
+; panic! [1] '-': received :bool, expected :number (got #true)
diff --git a/tests/math/subtraction/bad_type_list.neb b/tests/math/subtraction/bad_type_list.neb
new file mode 100644
index 0000000..e06685e
--- /dev/null
+++ b/tests/math/subtraction/bad_type_list.neb
@@ -0,0 +1,2 @@
+(- 4 (list "hello"))
+; panic! [1] '-': received :list, expected :number (got ("hello"))
diff --git a/tests/math/subtraction/bad_type_string.neb b/tests/math/subtraction/bad_type_string.neb
new file mode 100644
index 0000000..5685b59
--- /dev/null
+++ b/tests/math/subtraction/bad_type_string.neb
@@ -0,0 +1,2 @@
+(- 3 "hello")
+; panic! [1] '-': received :string, expected :number (got "hello")
diff --git a/tests/math/subtraction/bad_type_type.neb b/tests/math/subtraction/bad_type_type.neb
new file mode 100644
index 0000000..7bb72aa
--- /dev/null
+++ b/tests/math/subtraction/bad_type_type.neb
@@ -0,0 +1,2 @@
+(- .4 :string)
+; panic! [1] '-': received :type, expected :number (got :string)
diff --git a/tests/math/subtraction/happy.neb b/tests/math/subtraction/happy.neb
new file mode 100644
index 0000000..035b83c
--- /dev/null
+++ b/tests/math/subtraction/happy.neb
@@ -0,0 +1,10 @@
+(print 
+    (concat
+        (->string (- 2)) " "
+        (->string (- 4 5)) " "
+        (->string (- .9)) " "
+        (->string (- 2.9 4)) " "
+        (->string (- 2 4.5)) " "
+        (->string (- 6 7 8 15))))
+
+; -2 -1 -0.9 -1.1 -2.5 -24