Fmt + fix tensor min (#92)

Author: christopherzimmerman

spec/tensor/reduction_spec.cr

@@ -0,0 +1,40 @@
+# Copyright (c) 2023 Crystal Data Contributors
+#
+# MIT License
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+require "../spec_helper"
+
+describe Tensor do
+  it "can reduce a tensor's min along an axis" do
+    input = [[-1, 1], [-1, 1]].to_tensor
+    expected = [-1, -1].to_tensor
+
+    Num::Testing.tensor_equal(input.min(1), expected).should be_true
+  end
+
+  it "can reduce a tensor's min to a scalar" do
+    input = [[-2, 1], [-1, 1]].to_tensor
+    expected = -2
+
+    (input.min == expected).should be_true
+  end
+end

src/tensor/reduction.cr

@@ -239,7 +239,7 @@ class Tensor(T, S)
   # Num.min(a) # => 3
   # ```
   def min : T
-    Num.min(self, axis, dims)
+    Num.min(self)
   end
 
   # Reduces a `Tensor` along an axis, finding the min of each