Add tests for quality checks with soda cli

exec.go

@@ -0,0 +1,6 @@
+package datacontract
+
+import "os/exec"
+
+// allow mocking command execution
+var cmdCombinedOutput = (*exec.Cmd).CombinedOutput

quality.go

@@ -64,22 +64,23 @@ func QualityCheck(
 
 	tempFile.Write(qualitySpecification)
 
-	res, err := sodaQualityCheck(tempFile.Name(), options)
-	if err != nil {
-		return fmt.Errorf("quality checks failed: %v", res)
-	}
+	err = sodaQualityCheck(tempFile.Name(), options)
 
-	// todo
-	log.Println("Soda CLI output:")
-	log.Println(res)
+	printQualityChecksResult(err)
 
-	printQualityCheckState()
+	if err != nil {
+		return fmt.Errorf("quality checks failed: %w", err)
+	}
 
 	return nil
 }
 
-func printQualityCheckState() {
-	fmt.Println("🟢 quality checks on data contract passed!")
+func printQualityChecksResult(err error) {
+	if err == nil {
+		log.Println("🟢 quality checks on data contract passed!")
+	} else {
+		log.Println("🔴 quality checks on data contract failed!")
+	}
 }
 
 func getQualityType(
@@ -113,7 +114,9 @@ func getQualitySpecification(
 	return TakeStringOrMarshall(spec), nil
 }
 
-func sodaQualityCheck(qualitySpecFileName string, options QualityCheckOptions) (res string, err error) {
+// soda cli checks
+
+func sodaQualityCheck(qualitySpecFileName string, options QualityCheckOptions) error {
 	var args = []string{"scan"}
 
 	args = append(args, "-d")
@@ -131,13 +134,13 @@ func sodaQualityCheck(qualitySpecFileName string, options QualityCheckOptions) (
 	args = append(args, qualitySpecFileName)
 
 	cmd := exec.Command("soda", args...)
+	output, err := cmdCombinedOutput(cmd)
+
+	log.Println(string(output))
 
-	stdout, err := cmd.Output()
 	if err != nil {
-		return res, fmt.Errorf("the CLI failed: %v", string(stdout))
+		return fmt.Errorf("the soda CLI failed: %v", string(output))
 	}
 
-	res = string(stdout)
-
-	return res, nil
+	return nil
 }

quality_test.go

@@ -1,6 +1,13 @@
 package datacontract
 
-import "testing"
+import (
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+	"testing"
+)
 
 func TestPrintQuality(t *testing.T) {
 	type args struct {
@@ -27,3 +34,165 @@ func TestPrintQuality(t *testing.T) {
 		})
 	}
 }
+
+func TestQualityCheck_Soda_Output(t *testing.T) {
+	type args struct {
+		dataContractFileName string
+		pathToType           []string
+		pathToSpecification  []string
+		options              QualityCheckOptions
+	}
+	tests := []LogOutputTest[args]{
+		{
+			name: "success",
+			args: args{
+				dataContractFileName: "test_resources/quality/datacontract.yaml",
+				pathToType:           []string{"quality", "type"},
+				pathToSpecification:  []string{"quality", "specification"},
+				options:              QualityCheckOptions{},
+			},
+			wantOutput: `output from soda
+🟢 quality checks on data contract passed!
+`,
+		},
+		{
+			name: "error",
+			args: args{
+				dataContractFileName: "test_resources/quality/datacontract.yaml",
+				pathToType:           []string{"quality", "type"},
+				pathToSpecification:  []string{"quality", "specification"},
+				options:              QualityCheckOptions{},
+			},
+			wantErr: true,
+			wantOutput: `output from soda
+🔴 quality checks on data contract failed!
+`,
+		},
+	}
+
+	defer func() { cmdCombinedOutput = (*exec.Cmd).CombinedOutput }()
+
+	for _, tt := range tests {
+		cmdCombinedOutput = func(cmd *exec.Cmd) ([]byte, error) {
+			if tt.name == "success" {
+				return []byte("output from soda"), nil
+			} else {
+				return []byte("output from soda"), errors.New("checks failed")
+			}
+		}
+
+		RunLogOutputTest(t, tt, "Diff", func() error {
+			return QualityCheck(tt.args.dataContractFileName, tt.args.pathToType, tt.args.pathToSpecification, tt.args.options)
+		})
+	}
+}
+
+func TestQualityCheck_Soda_Arguments(t *testing.T) {
+	otherDatasource := "duckdb_local"
+	otherConfigurationFileName := "./my-soda-conf.yaml"
+
+	type args struct {
+		dataContractFileName string
+		pathToType           []string
+		pathToSpecification  []string
+		options              QualityCheckOptions
+	}
+	tests := []struct {
+		name         string
+		args         args
+		wantSodaArgs []string
+		wantErr      bool
+	}{
+		{
+			name: "with defaults",
+			args: args{
+				dataContractFileName: "test_resources/quality/datacontract.yaml",
+				pathToType:           []string{"quality", "type"},
+				pathToSpecification:  []string{"quality", "specification"},
+				options:              QualityCheckOptions{},
+			},
+			wantSodaArgs: []string{"soda", "scan", "-d", "default"},
+		},
+		{
+			name: "with data source option",
+			args: args{
+				dataContractFileName: "test_resources/quality/datacontract.yaml",
+				pathToType:           []string{"quality", "type"},
+				pathToSpecification:  []string{"quality", "specification"},
+				options:              QualityCheckOptions{SodaDataSource: &otherDatasource},
+			},
+			wantSodaArgs: []string{"soda", "scan", "-d", otherDatasource},
+		},
+		{
+			name: "with configuration file name option",
+			args: args{
+				dataContractFileName: "test_resources/quality/datacontract.yaml",
+				pathToType:           []string{"quality", "type"},
+				pathToSpecification:  []string{"quality", "specification"},
+				options:              QualityCheckOptions{SodaConfigurationFileName: &otherConfigurationFileName},
+			},
+			wantSodaArgs: []string{"soda", "scan", "-d", "default", "-c", otherConfigurationFileName},
+		},
+		{
+			name: "with all soda options",
+			args: args{
+				dataContractFileName: "test_resources/quality/datacontract.yaml",
+				pathToType:           []string{"quality", "type"},
+				pathToSpecification:  []string{"quality", "specification"},
+				options: QualityCheckOptions{
+					SodaDataSource:            &otherDatasource,
+					SodaConfigurationFileName: &otherConfigurationFileName,
+				},
+			},
+			wantSodaArgs: []string{"soda", "scan", "-d", otherDatasource, "-c", otherConfigurationFileName},
+		},
+	}
+
+	defer func() { cmdCombinedOutput = (*exec.Cmd).CombinedOutput }()
+
+	for _, tt := range tests {
+		cmdCombinedOutput = mockSodaCLI(tt.wantSodaArgs)
+
+		t.Run(tt.name, func(t *testing.T) {
+			if err := QualityCheck(tt.args.dataContractFileName, tt.args.pathToType, tt.args.pathToSpecification, tt.args.options); (err != nil) != tt.wantErr {
+				t.Errorf("QualityCheck() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
+
+func mockSodaCLI(wantedArguments []string) func(cmd *exec.Cmd) (res []byte, err error) {
+	return func(cmd *exec.Cmd) (res []byte, err error) {
+
+		if len(wantedArguments) != len(cmd.Args)-1 {
+			return nil, errors.New("unwanted soda argument length")
+		}
+
+		for i, actualArg := range wantedArguments[0:] {
+			err = checkArgument(cmd, i, actualArg)
+		}
+		err = checkFileNameArgument(cmd)
+
+		if err != nil {
+			return nil, err
+		}
+
+		return []byte{}, nil
+	}
+}
+
+func checkFileNameArgument(cmd *exec.Cmd) error {
+	fileName := cmd.Args[len(cmd.Args)-1]
+	expectedPrefix := fmt.Sprintf("%v%v", os.TempDir(), "quality-checks-")
+	if !strings.HasPrefix(fileName, expectedPrefix) {
+		return fmt.Errorf("unwanted quality checks filename argument: %v", fileName)
+	}
+	return nil
+}
+
+func checkArgument(cmd *exec.Cmd, position int, argument string) error {
+	if cmd.Args[position] != argument {
+		return fmt.Errorf("invalid argument %v on position %v", argument, position)
+	}
+	return nil
+}