From 2ad7daa81f4b39402fa454dbb671eb8034ad9803 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Diogo=20Galv=C3=A3o?= <diogo86@gmail.com>
Date: Sat, 21 Dec 2019 23:29:39 -0300
Subject: [PATCH] Test variable interpolation in the YAML

---
 .../docker-compose-colon-question-error.yml        |  8 ++++++++
 .../docker-compose-question-error.yml              |  8 ++++++++
 tests/interpolation/docker-compose.yml             | 14 ++++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 tests/interpolation/docker-compose-colon-question-error.yml
 create mode 100644 tests/interpolation/docker-compose-question-error.yml
 create mode 100644 tests/interpolation/docker-compose.yml

diff --git a/tests/interpolation/docker-compose-colon-question-error.yml b/tests/interpolation/docker-compose-colon-question-error.yml
new file mode 100644
index 0000000..7761f45
--- /dev/null
+++ b/tests/interpolation/docker-compose-colon-question-error.yml
@@ -0,0 +1,8 @@
+version: "3.7"
+services:
+    variables:
+        image: busybox
+        command: ["/bin/busybox", "sh", "-c", "export | grep EXAMPLE"]
+        environment:
+            EXAMPLE_COLON_QUESTION_ERROR: ${NOT_A_VARIABLE:?Missing variable}
+
diff --git a/tests/interpolation/docker-compose-question-error.yml b/tests/interpolation/docker-compose-question-error.yml
new file mode 100644
index 0000000..ea07072
--- /dev/null
+++ b/tests/interpolation/docker-compose-question-error.yml
@@ -0,0 +1,8 @@
+version: "3.7"
+services:
+    variables:
+        image: busybox
+        command: ["/bin/busybox", "sh", "-c", "export | grep EXAMPLE"]
+        environment:
+            EXAMPLE_QUESTION_ERROR: ${NOT_A_VARIABLE?Missing variable}
+
diff --git a/tests/interpolation/docker-compose.yml b/tests/interpolation/docker-compose.yml
new file mode 100644
index 0000000..c5358e0
--- /dev/null
+++ b/tests/interpolation/docker-compose.yml
@@ -0,0 +1,14 @@
+version: "3.7"
+services:
+    variables:
+        image: busybox
+        command: ["/bin/busybox", "sh", "-c", "export | grep EXAMPLE"]
+        environment:
+            EXAMPLE_VARIABLE: "Host user: $USER"
+            EXAMPLE_BRACES: "Host user: ${USER}"
+            EXAMPLE_COLON_DASH_DEFAULT: ${NOT_A_VARIABLE:-My default}
+            EXAMPLE_DASH_DEFAULT: ${NOT_A_VARIABLE-My other default}
+            EXAMPLE_DOT_ENV: $DOT_ENV_VARIABLE
+            EXAMPLE_LITERAL: This is a $$literal
+            EXAMPLE_EMPTY: $NOT_A_VARIABLE
+