PowerShell with Pester Tests - No test files were found and no scriptblocks were provided

Trying to learn Pester (v5.0.4 and PS v7.0.3). I have these files

Get-Planet2.ps1:

function Get-Planet ([string]$Name = '*') {
    $planets = @(
        @{ Name = 'Mercury' }
        @{ Name = 'Venus'   }
        @{ Name = 'Earth'   }
        @{ Name = 'Mars'    }
        @{ Name = 'Jupiter' }
        @{ Name = 'Saturn'  }
        @{ Name = 'Uranus'  }
        @{ Name = 'Neptune' }
    ) | ForEach-Object { [PSCustomObject] $_ }

    $planets | Where-Object { $_.Name -like $Name }
}

Get-Planet2.Tests.ps1:

BeforeAll { 
    # This will bring the function from the main file back to scope.
    . $PSScriptRoot/Get-Planet2.ps1

    param(
        [parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string]$name,
        [parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string]$title,
        [parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string]$InputFile
    )
}

Describe 'Get-Planet' {
    It 'Given no parameters, it lists all 8 planets' {
        $allPlanets = Get-Planet
        $allPlanets.Count | Should -Be 8
    }

    It 'Earth is the third planet in our Solar System' {
        $allPlanets = Get-Planet
        $allPlanets[2].Name | Should -Be 'Earth'
    }

    It 'Pluto is not part of our Solar System' {
        $allPlanets = Get-Planet
        $plutos = $allPlanets | Where-Object Name -EQ 'Pluto'
        $plutos.Count | Should -Be 0
    }

    It 'Planets have this order: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune' {
        $allPlanets = Get-Planet
        $planetsInOrder = $allPlanets.Name -join ', ' 
        $planetsInOrder | Should -Be 'Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune'
    } 

}

Call-Get-Planet2.ps1:

$here = Split-Path -Parent $MyInvocation.MyCommand.Path
$path = "$here/Get-Planet2.Tests.ps1"
$parameters = @{name = "John"; title = "Sales"; InputFile = "$here/test.json"}

write-host "Path: $path"
write-host $parameters

Invoke-Pester -Script @{Path=$path;Parameters=$parameters}

My Problem:

When I run Call-Get-Planet2.ps1, I ended with the below error. I can't figure out why it is doing this. Need guidance. Thanks

System.Management.Automation.RuntimeException: No test files were found and no scriptblocks were provided. at Invoke-Pester, /Users/myaccount/.local/share/powershell/Modules/Pester/5.0.4/Pester.psm1: line 4520 at , /Users/myaccount/repos/myrepo/Pester/Call-Get-Planet2.ps1: line 8 at , : line 1