test(cosmovisor): improve TestParseUpgradeInfoFile with substring assertions (#18262)

Co-authored-by: Marko <marbar3778@yahoo.com>

tools/cosmovisor/scanner.go

@@ -189,7 +189,7 @@ func parseUpgradeInfoFile(filename string, disableRecase bool) (upgradetypes.Pla
 	}
 
 	if len(f) == 0 {
-		return upgradetypes.Plan{}, errors.New("empty upgrade-info.json")
+		return upgradetypes.Plan{}, fmt.Errorf("empty upgrade-info.json in %q", filename)
 	}
 
 	var upgradePlan upgradetypes.Plan
@@ -207,5 +207,5 @@ func parseUpgradeInfoFile(filename string, disableRecase bool) (upgradetypes.Pla
 		upgradePlan.Name = strings.ToLower(upgradePlan.Name)
 	}
 
-	return upgradePlan, err
+	return upgradePlan, nil
 }

tools/cosmovisor/scanner_test.go

@@ -14,67 +14,64 @@ func TestParseUpgradeInfoFile(t *testing.T) {
 		filename      string
 		expectUpgrade upgradetypes.Plan
 		disableRecase bool
-		expectErr     bool
+		expectErr     string
 	}{
 		{
 			filename:      "f1-good.json",
 			disableRecase: false,
 			expectUpgrade: upgradetypes.Plan{Name: "upgrade1", Info: "some info", Height: 123},
-			expectErr:     false,
 		},
 		{
 			filename:      "f2-normalized-name.json",
 			disableRecase: false,
 			expectUpgrade: upgradetypes.Plan{Name: "upgrade2", Info: "some info", Height: 125},
-			expectErr:     false,
 		},
 		{
 			filename:      "f2-normalized-name.json",
 			disableRecase: true,
 			expectUpgrade: upgradetypes.Plan{Name: "Upgrade2", Info: "some info", Height: 125},
-			expectErr:     false,
 		},
 		{
 			filename:      "f2-bad-type.json",
 			disableRecase: false,
 			expectUpgrade: upgradetypes.Plan{},
-			expectErr:     true,
+			expectErr:     "cannot unmarshal number into Go struct",
 		},
 		{
 			filename:      "f2-bad-type-2.json",
 			disableRecase: false,
 			expectUpgrade: upgradetypes.Plan{},
-			expectErr:     true,
+			expectErr:     "height must be greater than 0: invalid request",
 		},
 		{
 			filename:      "f3-empty.json",
 			disableRecase: false,
 			expectUpgrade: upgradetypes.Plan{},
-			expectErr:     true,
+			expectErr:     "empty upgrade-info.json in",
 		},
 		{
 			filename:      "f4-empty-obj.json",
 			disableRecase: false,
 			expectUpgrade: upgradetypes.Plan{},
-			expectErr:     true,
+			expectErr:     "invalid upgrade-info.json content: name cannot be empty",
 		},
 		{
 			filename:      "f5-partial-obj-1.json",
 			disableRecase: false,
 			expectUpgrade: upgradetypes.Plan{},
-			expectErr:     true,
+			expectErr:     "height must be greater than 0",
 		},
 		{
 			filename:      "f5-partial-obj-2.json",
 			disableRecase: false,
 			expectUpgrade: upgradetypes.Plan{},
-			expectErr:     true,
+			expectErr:     "name cannot be empty: invalid request",
 		},
 		{
-			filename:      "unknown.json",
+			filename:      "non-existent.json",
 			disableRecase: false,
 			expectUpgrade: upgradetypes.Plan{},
-			expectErr:     true,
+			expectErr:     "no such file or directory",
 		},
 	}
 
@@ -83,8 +80,9 @@ func TestParseUpgradeInfoFile(t *testing.T) {
 		t.Run(tc.filename, func(t *testing.T) {
 			require := require.New(t)
 			ui, err := parseUpgradeInfoFile(filepath.Join(".", "testdata", "upgrade-files", tc.filename), tc.disableRecase)
-			if tc.expectErr {
+			if tc.expectErr != "" {
 				require.Error(err)
+				require.Contains(err.Error(), tc.expectErr)
 			} else {
 				require.NoError(err)
 				require.Equal(tc.expectUpgrade, ui)

tools/cosmovisor/testdata/upgrade-files/f3-empty.json

@@ -1 +0,0 @@
-