1 files changed, 40 insertions, 0 deletions
diff --git a/go/hamming/hamming_test.go b/go/hamming/hamming_test.go
new file mode 100644
index 0000000..82e8a8e
--- /dev/null
+++ b/go/hamming/hamming_test.go
@@ -0,0 +1,40 @@
+package hamming
+
+import "testing"
+
+func TestHamming(t *testing.T) {
+	for _, tc := range testCases {
+		got, err := Distance(tc.s1, tc.s2)
+		if tc.expectError {
+			// check if err is of error type
+			var _ error = err
+
+			// we expect error
+			if err == nil {
+				t.Fatalf("Distance(%q, %q); expected error, got nil.",
+					tc.s1, tc.s2)
+			}
+		} else {
+			// we do not expect error
+			if err != nil {
+				t.Fatalf("Distance(%q, %q) returned unexpected error: %v",
+					tc.s1, tc.s2, err)
+			}
+			if got != tc.want {
+				t.Fatalf("Distance(%q, %q) = %d, want %d.",
+					tc.s1, tc.s2, got, tc.want)
+			}
+
+		}
+	}
+}
+
+func BenchmarkHamming(b *testing.B) {
+	// bench combined time to run through all test cases
+	for i := 0; i < b.N; i++ {
+		for _, tc := range testCases {
+			// ignoring errors and results because we're just timing function execution
+			_, _ = Distance(tc.s1, tc.s2)
+		}
+	}
+}