feat: variable inheritance tests (#2038)

testdata/var_inheritance/v3/included-task-vars/Taskfile.yml

@@ -0,0 +1,12 @@
+version: '3'
+
+silent: true
+dotenv:
+  - 'global.env'
+vars:
+  VAR: entrypoint-global-vars
+env:
+  ENV: entrypoint-global-vars
+
+includes:
+  included: included.yml

testdata/var_inheritance/v3/included-task-vars/global.env

@@ -0,0 +1,2 @@
+VAR=entrypoint-global-dotenv
+ENV=entrypoint-global-dotenv

testdata/var_inheritance/v3/included-task-vars/included.yml

@@ -0,0 +1,19 @@
+version: '3'
+
+silent: true
+vars:
+  VAR: included-global-vars
+env:
+  ENV: included-global-vars
+
+tasks:
+  default:
+    dotenv:
+      - 'task.env'
+    vars:
+      VAR: included-task-vars
+    env:
+      ENV: included-task-vars
+    cmds:
+      - 'echo "{{.VAR}}"'
+      - 'echo "$ENV"'

testdata/var_inheritance/v3/included-task-vars/task.env

@@ -0,0 +1,2 @@
+VAR=included-task-dotenv
+ENV=included-task-dotenv