fix(actions): show "Complete job" logs when the last step is skipped (#38939)

`FullSteps` only gave the synthetic "Complete job" step the remaining
log range when the last step that had run was also the final step of the
job. A skipped step does not count as having run, so any job ending in a
skipped step left the post step with an empty range: its logs were
stored but never rendered, and the duration showed as `0s`.

Reproducible with any job whose last step is skipped, which is common
for failure notifications:

```yaml
steps:
  - run: echo hello
  - run: echo never
    if: failure()
```

The gate now checks whether the final step is done, which preserves the
behaviour from https://github.com/go-gitea/gitea/pull/29926 of showing
the post step as waiting while steps are still pending.
--> Regression from https://github.com/go-gitea/gitea/pull/29926

---------

Signed-off-by: bircni <bircni@icloud.com>

modules/actions/task_state.go

@@ -30,8 +30,9 @@ func FullSteps(task *actions_model.ActionTask) []*actions_model.ActionTaskStep {
 	// For example,
 	// 1. preStep(Success) -> step1(Success) -> step2(Running) -> step3(Waiting) -> postStep(Waiting): lastHasRunStep is step1.
 	// 2. preStep(Success) -> step1(Success) -> step2(Success) -> step3(Success) -> postStep(Success): lastHasRunStep is step3.
-	// 3. preStep(Success) -> step1(Success) -> step2(Failure) -> step3 -> postStep(Waiting): lastHasRunStep is step2.
-	// So its Stopped is the Started of postStep when there are no more steps to run.
+	// 3. preStep(Success) -> step1(Success) -> step2(Failure) -> step3(Waiting) -> postStep(Waiting): lastHasRunStep is step2.
+	// 4. preStep(Success) -> step1(Success) -> step2(Skipped) -> postStep(Success): lastHasRunStep is step1, because a skipped step never ran.
+	// So its Stopped is the Started of postStep once no step is left to run.
 	var lastHasRunStep *actions_model.ActionTaskStep
 
 	var logIndex int64
@@ -71,8 +72,8 @@ func FullSteps(task *actions_model.ActionTask) []*actions_model.ActionTaskStep {
 		Name:   postStepName,
 		Status: actions_model.StatusWaiting,
 	}
-	// If the lastHasRunStep is the last step, or it has failed, postStep has started.
-	if lastHasRunStep.Status.IsFailure() || lastHasRunStep == task.Steps[len(task.Steps)-1] {
+	// If no step is left to run, or the lastHasRunStep has failed, postStep has started.
+	if lastHasRunStep.Status.IsFailure() || task.Steps[len(task.Steps)-1].Status.IsDone() {
 		postStep.LogIndex = logIndex
 		postStep.LogLength = task.LogLength - postStep.LogIndex
 		postStep.Started = lastHasRunStep.Stopped

modules/actions/task_state_test.go

@@ -156,6 +156,27 @@ func TestFullSteps(t *testing.T) {
 				{Name: postStepName, Status: actions_model.StatusSuccess, LogIndex: 90, LogLength: 10, Started: 10090, Stopped: 10100},
 			},
 		},
+		{
+			name: "last step is skipped",
+			task: &actions_model.ActionTask{
+				Steps: []*actions_model.ActionTaskStep{
+					{Status: actions_model.StatusSuccess, LogIndex: 10, LogLength: 20, Started: 10010, Stopped: 10020},
+					{Status: actions_model.StatusSuccess, LogIndex: 30, LogLength: 60, Started: 10020, Stopped: 10090},
+					{Status: actions_model.StatusSkipped, LogIndex: 0, LogLength: 0, Started: 0, Stopped: 0},
+				},
+				Status:    actions_model.StatusSuccess,
+				Started:   10000,
+				Stopped:   10100,
+				LogLength: 100,
+			},
+			want: []*actions_model.ActionTaskStep{
+				{Name: preStepName, Status: actions_model.StatusSuccess, LogIndex: 0, LogLength: 10, Started: 10000, Stopped: 10010},
+				{Status: actions_model.StatusSuccess, LogIndex: 10, LogLength: 20, Started: 10010, Stopped: 10020},
+				{Status: actions_model.StatusSuccess, LogIndex: 30, LogLength: 60, Started: 10020, Stopped: 10090},
+				{Status: actions_model.StatusSkipped, LogIndex: 0, LogLength: 0, Started: 0, Stopped: 0},
+				{Name: postStepName, Status: actions_model.StatusSuccess, LogIndex: 90, LogLength: 10, Started: 10090, Stopped: 10100},
+			},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {