From 4afdfe17b240cd248bdd3e781fcfe4b863f91449 Mon Sep 17 00:00:00 2001
From: noamcattan <ndcattan@gmail.com>
Date: Tue, 13 Feb 2024 11:31:18 +0200
Subject: [PATCH 1/2] atlasaction: support dry-run flag

---
 atlasaction/action.go    | 11 +++++++++++
 migrate/apply/action.yml |  3 +++
 2 files changed, 14 insertions(+)

diff --git a/atlasaction/action.go b/atlasaction/action.go
index 00ad4f52..2bb455b8 100644
--- a/atlasaction/action.go
+++ b/atlasaction/action.go
@@ -29,11 +29,22 @@ var Version string
 
 // MigrateApply runs the GitHub Action for "ariga/atlas-action/migrate/apply".
 func MigrateApply(ctx context.Context, client *atlasexec.Client, act *githubactions.Action) error {
+	dryRun, err := func() (bool, error) {
+		inp := act.GetInput("dry-run")
+		if inp == "" {
+			return false, nil
+		}
+		return strconv.ParseBool(inp)
+	}()
+	if err != nil {
+		return fmt.Errorf(`invlid value for the "dry-run" input: %w`, err)
+	}
 	params := &atlasexec.MigrateApplyParams{
 		URL:             act.GetInput("url"),
 		DirURL:          act.GetInput("dir"),
 		ConfigURL:       act.GetInput("config"),
 		Env:             act.GetInput("env"),
+		DryRun:          dryRun,
 		TxMode:          act.GetInput("tx-mode"),  // Hidden param.
 		BaselineVersion: act.GetInput("baseline"), // Hidden param.
 		Context: &atlasexec.DeployRunContext{
diff --git a/migrate/apply/action.yml b/migrate/apply/action.yml
index 407b9f6a..10c5c1db 100644
--- a/migrate/apply/action.yml
+++ b/migrate/apply/action.yml
@@ -21,6 +21,9 @@ inputs:
   env:
     description: The environment to use from the Atlas configuration file.  For example, `dev`.
     required: false
+  dry-run:
+    description: Print SQL without executing it. Either "true" or "false".
+    required: false
 outputs:
   current:
     description: The current version of the database. (before applying migrations)

From 844fd465e7ea38b55dd3ef49f6d59b4818ec6de8 Mon Sep 17 00:00:00 2001
From: noamcattan <ndcattan@gmail.com>
Date: Tue, 13 Feb 2024 11:45:50 +0200
Subject: [PATCH 2/2] add tests

---
 atlasaction/action_test.go | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/atlasaction/action_test.go b/atlasaction/action_test.go
index 557123fa..cd1b095c 100644
--- a/atlasaction/action_test.go
+++ b/atlasaction/action_test.go
@@ -44,6 +44,36 @@ func TestMigrateApply(t *testing.T) {
 			"target":        "20230922132634",
 		}, m)
 	})
+	t.Run("dry-run", func(t *testing.T) {
+		tt := newT(t)
+		tt.setInput("url", "sqlite://"+tt.db)
+		tt.setInput("dir", "file://testdata/migrations/")
+		tt.setInput("dry-run", "true")
+		err := MigrateApply(context.Background(), tt.cli, tt.act)
+		require.NoError(t, err)
+		out, err := tt.cli.SchemaInspect(context.Background(), &atlasexec.SchemaInspectParams{
+			URL:     "sqlite://" + tt.db,
+			Exclude: []string{"atlas_schema_revisions"},
+			Format:  "sql",
+		})
+		require.NoError(t, err)
+		require.Empty(t, out)
+	})
+	t.Run("dry-run false", func(t *testing.T) {
+		tt := newT(t)
+		tt.setInput("url", "sqlite://"+tt.db)
+		tt.setInput("dir", "file://testdata/migrations/")
+		tt.setInput("dry-run", "false")
+		err := MigrateApply(context.Background(), tt.cli, tt.act)
+		require.NoError(t, err)
+		out, err := tt.cli.SchemaInspect(context.Background(), &atlasexec.SchemaInspectParams{
+			URL:     "sqlite://" + tt.db,
+			Exclude: []string{"atlas_schema_revisions"},
+			Format:  "sql",
+		})
+		require.NoError(t, err)
+		require.NotEmpty(t, out)
+	})
 	t.Run("tx-mode", func(t *testing.T) {
 		tt := newT(t)
 		tt.setInput("url", "sqlite://"+tt.db)