test cases in "test" folder has unexplained dependancies

[pratapram]

I am following instructions in this video.

I did a new install of powershell on my macos. This is for the simplest ARM template for a single instance based on "100-marketplace-sample". When I try to run the test case in the "test" folder in powershell I get this error:

Test-AzureRMTemplate -TemplatePath ../../my-offer/azuredeploy.jsonsdf
Import-Json : The term 'Import-Json' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At /Users/pratap/cloud-images/azure/dai-azure-managed-app/test/template-tests/Test-AzureRMTemplate.ps1:145 char:76

• ... script:AlreadyLoadedCache[$cacheFile.Name] = $cacheFile | Import-Json

•                                                           ~~~~~~~~~~~
  

• CategoryInfo : ObjectNotFound: (Import-Json:String) [], CommandNotFoundException
• FullyQualifiedErrorId : CommandNotFoundException

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Issue Details

Repro steps (if necessary, delete otherwise)

[bmoore-msft]

you'll need to

import-module .\arm-ttk\arm-ttk\arm-ttk.psd1

now before running the tests