Move all tests to single directory "tests"

Signed-off-by: Povilas Kanapickas <povilas@radix.lt>

tests/integration/env-file-tests/.env

@@ -0,0 +1,2 @@
+ZZVAR1='This value is overwritten by env-file-tests/.env'
+ZZVAR3='This value is loaded from env-file-tests/.env'

tests/integration/env-file-tests/.gitignore

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+# This overrides the repository root .gitignore (ignoring all .env).
+# The .env files in this directory are important for the test cases.
+!.env
+!project/.env

tests/integration/env-file-tests/README.md

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+running the following commands should always give podman-rocks-123
+
+```
+podman-compose -f project/container-compose.yaml --env-file env-files/project-1.env up
+```
+
+```
+podman-compose -f $(pwd)/project/container-compose.yaml --env-file $(pwd)/env-files/project-1.env up
+```
+
+```
+podman-compose -f $(pwd)/project/container-compose.env-file-flat.yaml up
+```
+
+```
+podman-compose -f $(pwd)/project/container-compose.env-file-obj.yaml up
+```
+
+```
+podman-compose -f $(pwd)/project/container-compose.env-file-obj-optional.yaml up
+```
+
+based on environment variable precedent this command should give podman-rocks-321
+
+```
+ZZVAR1=podman-rocks-321 podman-compose -f $(pwd)/project/container-compose.yaml --env-file $(pwd)/env-files/project-1.env up
+```
+
+_The below test should print three environment variables_
+
+```
+podman-compose -f $(pwd)/project/container-compose.load-.env-in-project.yaml run --rm app
+
+ZZVAR1=This value is overwritten by env-file-tests/.env
+ZZVAR2=This value is loaded from .env in project/ directory
+ZZVAR3=This value is loaded from env-file-tests/.env
+```

tests/integration/env-file-tests/env-files/project-1.env

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+ZZVAR1=podman-rocks-123
+ZZVAR2=podman-rocks-124
+ZZVAR3=podman-rocks-125

tests/integration/env-file-tests/env-files/project-2.env

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+ZZVAR1=podman-rocks-223
+ZZVAR2=podman-rocks-224

tests/integration/env-file-tests/project/.env

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+ZZVAR1='This value is loaded but should be overwritten'
+ZZVAR2='This value is loaded from .env in project/ directory'

tests/integration/env-file-tests/project/container-compose.env-file-flat.yaml

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+services:
+  app:
+    image: busybox
+    command: ["/bin/busybox", "sh", "-c", "env | grep ZZ"]
+    tmpfs:
+      - /run
+      - /tmp
+    env_file:
+      - ../env-files/project-1.env

tests/integration/env-file-tests/project/container-compose.env-file-obj-optional.yaml

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+services:
+  app:
+    image: busybox
+    command: ["/bin/busybox", "sh", "-c", "env | grep ZZ"]
+    tmpfs:
+      - /run
+      - /tmp
+    env_file:
+      - path: ../env-files/project-1.env
+      - path: ../env-files/project-2.env
+        required: false

tests/integration/env-file-tests/project/container-compose.env-file-obj.yaml

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+services:
+  app:
+    image: busybox
+    command: ["/bin/busybox", "sh", "-c", "env | grep ZZ"]
+    tmpfs:
+      - /run
+      - /tmp
+    env_file:
+      - path: ../env-files/project-1.env

tests/integration/env-file-tests/project/container-compose.load-.env-in-project.yaml

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+services:
+  app:
+    image: busybox
+    command: ["/bin/busybox", "sh", "-c", "env | grep ZZ"]
+    tmpfs:
+      - /run
+      - /tmp
+    environment:
+      ZZVAR1: $ZZVAR1
+      ZZVAR2: $ZZVAR2
+      ZZVAR3: $ZZVAR3

tests/integration/env-file-tests/project/container-compose.yaml

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+services:
+  app:
+    image: busybox
+    command: ["/bin/busybox", "sh", "-c", "env | grep ZZ"]
+    tmpfs:
+      - /run
+      - /tmp
+    environment:
+      ZZVAR1: $ZZVAR1