add toolbox_used()

Author: scivision

+stdlib/toolbox_used.m

@@ -0,0 +1,20 @@
+%% TOOLBOX_USED list all Matlab toolboxes used by all functions in pkgPath
+%
+%% Inputs
+% * pkgPath: path to user namespace or file. Example: "+stdlib" or "stdlib.cpu_arch"
+%% Outputs
+% * tbxMathworks: Mathworks toolbox names used
+% * funUser: all user function files under pkgPath
+
+function [tbxMathworks, funUser] = toolbox_used(pkgPath)
+arguments
+  pkgPath string
+end
+
+[user, mathworks] = matlab.codetools.requiredFilesAndProducts(pkgPath);
+
+tbxMathworks = string({mathworks.Name}).';
+
+funUser = string(user).';
+
+end

test/TestSys.m

@@ -2,6 +2,8 @@
 
 properties
 CI = getenv("CI") == "true" || getenv("GITHUB_ACTIONS") == "true"
+cwd
+root
 end
 
 properties (TestParameter)
@@ -14,14 +16,35 @@
 
 methods(TestClassSetup)
 function pkg_path(tc)
-p = matlab.unittest.fixtures.PathFixture(fileparts(fileparts(mfilename('fullpath'))));
+tc.cwd = fileparts(mfilename('fullpath'));
+tc.root = fileparts(tc.cwd);
+p = matlab.unittest.fixtures.PathFixture(tc.root);
 tc.applyFixture(p)
 end
 end
 
 
 methods (Test, TestTags="impure")
 
+function test_toolbox_used(tc)
+[mathworksUsed, userFun] = stdlib.toolbox_used(fullfile(tc.root, "+stdlib"));
+Nlicense = length(mathworksUsed);
+txt = "stdlib for Matlab should only use builtin functions, no toolboxes";
+tc.verifyEqual(Nlicense, 1, txt)
+tc.verifyEqual(mathworksUsed, "MATLAB")
+tc.verifyGreaterThan(length(userFun), 200) % we have over 200 stdlib functions
+
+[mathworksUsed, userFun] = stdlib.toolbox_used(["edge", "geodetic2ecef"]);
+tc.verifyEqual(userFun, string.empty)
+tc.verifyEqual(length(mathworksUsed), 3)
+end
+
+function test_all_toolboxes(tc)
+tc.assumeTrue(stdlib.has_java())
+tbx = stdlib.allToolboxes();
+tc.verifyClass(tbx, "table")
+end
+
 function test_platform_tell(tc)
 tc.verifyClass(stdlib.platform_tell(), 'char')
 end