Adding tests for newton and cryptocurrency

tests/cryptocurrency.bats

@@ -0,0 +1,31 @@
+#!/bin/env bats
+
+@test "Testing cryptocurrency tool" {
+   echo cryptocurrency
+}
+
+@test "Check for latest version of bash-snippets on update" {
+  run cryptocurrency update
+  [ "$status" -eq 0 ]
+  [ "$output" = "Bash-Snippets is already the latest version" ]
+}
+
+@test "The -h option should print usage" {
+  run cryptocurrency -h
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "CryptoCurrency" ]
+}
+
+@test "Testing cryptocurrency exchange (12.35 BTC TO USD)" {
+  run cryptocurrency BTC USD 12.35
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "=========================" ]
+  [ "${lines[3]}" = "| BTC: 12.35" ]
+}
+
+@test "Get the tools version with -v" {
+  run cryptocurrency -v
+  [ "$status" -eq 0 ]
+  result=$( echo $(cryptocurrency -v) | grep -Eo "Version")
+  [ "$result" = "Version" ]
+}

tests/newton.bats

@@ -0,0 +1,31 @@
+#!/bin/env bats
+
+@test "Testing newton tool" {
+   echo newton
+}
+
+@test "Check for latest version of bash-snippets on update" {
+  run newton update
+  [ "$status" -eq 0 ]
+  [ "$output" = "Bash-Snippets is already the latest version" ]
+}
+
+@test "The -h option should print usage" {
+  run newton -h
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "Newton" ]
+}
+
+@test "Testing newton simplify for [[2x^2]+7]*[4x^2]" {
+  run newton simplify [[2x^2]+7]*[4x^2]
+  [ "$status" -eq 0 ]
+  [ "${lines[0]}" = "================================" ]
+  [ "${lines[3]}" = "|Result: 8 x^4 + 28 x^2" ]
+}
+
+@test "Get the tools version with -v" {
+  run newton -v
+  [ "$status" -eq 0 ]
+  result=$( echo $(newton -v) | grep -Eo "Version")
+  [ "$result" = "Version" ]
+}