Add exit code test to validate logic is as expected

tests/exit_test/bad.yaml

@@ -0,0 +1,6 @@
+architecture: amd64
+
+actions:
+  - action: run
+    chroot: false
+    command: not-a-command

tests/exit_test/exit_test.sh

@@ -0,0 +1,84 @@
+#!/bin/bash
+
+TEST=0
+FAILURES=0
+VERBOSE=0
+
+function test_failed {
+    local MSG="$1"
+    TEST=$(($TEST + 1))
+    FAILURES=$(($FAILURES + 1))
+    echo "Test ${TEST}: ${MSG}"
+}
+
+function test_passed {
+    TEST=$(($TEST + 1))
+    echo "Test ${TEST}: PASS"
+}
+
+function run_cmd {
+    local CMD="$@"
+    echo "Running ${CMD}"
+    if [[ $VERBOSE == 0 ]]; then
+        $CMD &>/dev/null
+    else
+        $CMD
+    fi
+    return $?
+}
+
+function expect_success {
+    local CMD="$@"
+
+    run_cmd $CMD && test_passed || test_failed "${CMD} failed with exitcode $?, expected success"
+}
+
+function expect_failure {
+    local CMD="$@"
+    run_cmd $CMD && test_failed "${CMD} succeeded, failure expected." || test_passed
+}
+
+function rename_command {
+    newname="$1"
+    shift
+    (exec -a "$newname" "$@")
+    return $?
+}
+
+
+expect_success debos --help
+expect_failure debos --not-a-valid-option
+expect_failure debos
+expect_failure debos good.yaml good.yaml
+expect_failure debos --disable-fakemachine --fakemachine-backend=uml good.yaml
+expect_failure debos non-existent-file.yaml
+expect_failure debos garbled.yaml
+expect_failure debos --fakemachine-backend=uml good.yaml
+expect_failure debos verify-fail.yaml
+expect_success debos --dry-run good.yaml
+expect_failure debos --memory=NotANumber good.yaml
+expect_failure debos --cpus=-1 good.yaml
+expect_failure debos --scratchsize=NotANumber good.yaml
+expect_success debos good.yaml
+expect_failure debos bad.yaml
+expect_failure debos pre-machine-failure.yaml
+expect_failure debos post-machine-failure.yaml
+expect_failure rename_command NOT_DEBOS debos good.yaml
+
+expect_failure sudo debos non-existent-file.yaml --disable-fakemachine
+expect_failure sudo debos garbled.yaml --disable-fakemachine
+expect_failure sudo debos verify-fail.yaml --disable-fakemachine
+expect_success sudo debos --dry-run good.yaml --disable-fakemachine
+expect_success sudo debos good.yaml --disable-fakemachine
+expect_failure sudo debos bad.yaml --disable-fakemachine
+expect_failure sudo debos pre-machine-failure.yaml --disable-fakemachine
+expect_failure sudo debos post-machine-failure.yaml --disable-fakemachine
+
+echo
+if [[ $FAILURES -ne 0 ]]; then
+    SUCCESSES=$(( $TEST - $FAILURES ))
+    echo "Error: Only $SUCCESSES/$TEST tests passed"
+    exit 1
+fi
+
+echo "All tests passed"

tests/exit_test/garbled.yaml

@@ -0,0 +1,4 @@
+This isn't
+ :::
+
+   very good YAML

tests/exit_test/good.yaml

@@ -0,0 +1,6 @@
+architecture: amd64
+
+actions:
+  - action: run
+    chroot: false
+    command: ls

tests/exit_test/post-machine-failure.yaml

@@ -0,0 +1,7 @@
+architecture: amd64
+
+actions:
+  - action: run
+    chroot: false
+    command: not-a-command
+    postprocess: true

tests/exit_test/pre-machine-failure.yaml

@@ -0,0 +1,8 @@
+architecture: amd64
+
+actions:
+  - action: image-partition
+    imagename: test
+    imagesize: 500000000000000TB
+    partitiontype: gpt
+

tests/exit_test/verify-fail.yaml

@@ -0,0 +1,6 @@
+architecture: amd64
+
+actions:
+  - action: unpack
+    compression: gz
+    file: ~