From b67017376471118ec3724f9f0b6868aad7a0f8c8 Mon Sep 17 00:00:00 2001
From: Aidan Steele <aidan.steele@glassechidna.com.au>
Date: Sat, 14 Mar 2020 18:00:37 +1100
Subject: [PATCH] Add support for step.working-directory (closes #149) (#154)

---
 pkg/runner/runner_test.go            |  1 +
 pkg/runner/step_context.go           |  7 +++++++
 pkg/runner/testdata/workdir/canary   |  0
 pkg/runner/testdata/workdir/push.yml | 16 ++++++++++++++++
 4 files changed, 24 insertions(+)
 create mode 100644 pkg/runner/testdata/workdir/canary
 create mode 100644 pkg/runner/testdata/workdir/push.yml

diff --git a/pkg/runner/runner_test.go b/pkg/runner/runner_test.go
index 9e6ee91..8b9e1be 100644
--- a/pkg/runner/runner_test.go
+++ b/pkg/runner/runner_test.go
@@ -53,6 +53,7 @@ func TestRunEvent(t *testing.T) {
 		{"local-action-dockerfile", "push", ""},
 		{"matrix", "push", ""},
 		{"commands", "push", ""},
+		{"workdir", "push", ""},
 	}
 	log.SetLevel(log.DebugLevel)
 
diff --git a/pkg/runner/step_context.go b/pkg/runner/step_context.go
index 379a14a..7c30c67 100644
--- a/pkg/runner/step_context.go
+++ b/pkg/runner/step_context.go
@@ -110,6 +110,13 @@ func (sc *StepContext) setupShellCommand() common.Executor {
 			return err
 		}
 
+		if step.WorkingDirectory != "" {
+			_, err = script.WriteString(fmt.Sprintf("cd %s\n", step.WorkingDirectory))
+			if err != nil {
+				return err
+			}
+		}
+
 		run := rc.ExprEval.Interpolate(step.Run)
 
 		if _, err = script.WriteString(run); err != nil {
diff --git a/pkg/runner/testdata/workdir/canary b/pkg/runner/testdata/workdir/canary
new file mode 100644
index 0000000..e69de29
diff --git a/pkg/runner/testdata/workdir/push.yml b/pkg/runner/testdata/workdir/push.yml
new file mode 100644
index 0000000..16c7fe4
--- /dev/null
+++ b/pkg/runner/testdata/workdir/push.yml
@@ -0,0 +1,16 @@
+name: workdir
+on: push
+
+jobs:
+  workdir:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: '[[ "$(pwd)" == "/github/workspace/workdir" ]]'
+      working-directory: workdir
+
+  noworkdir:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: '[[ "$(pwd)" == "/github/workspace" ]]'