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diff_test.go
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diff_test.go
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package datacontract
import (
"bytes"
"testing"
)
func TestDiff(t *testing.T) {
type args struct {
dataContractLocation string
stableDataContractLocation string
pathToModels []string
pathToType []string
pathToSpecification []string
}
tests := []LogOutputTest[args]{
{
name: "no model",
args: args{
dataContractLocation: "test_resources/diff/datacontract_no_model.yaml",
stableDataContractLocation: "test_resources/diff/datacontract_no_model.yaml",
pathToModels: []string{"models"},
pathToType: []string{"schema", "type"},
pathToSpecification: []string{"schema", "specification"},
},
wantErr: false,
wantOutput: `Found 0 differences between the data contracts!
`,
},
{
name: "breaking - spec model",
args: args{
dataContractLocation: "test_resources/diff/breaking_datacontract.yaml",
stableDataContractLocation: "test_resources/diff/datacontract.yaml",
pathToModels: []string{"models"},
pathToType: []string{"schema", "type"},
pathToSpecification: []string{"schema", "specification"},
},
wantErr: false,
wantOutput: `Found 2 differences between the data contracts!
🔴 Difference 1:
Description: field 'my_table.my_column' was removed
Type: field-removed
Severity: breaking
Level: field
InternalModel: my_table
InternalField: my_column
🟡 Difference 2:
Description: field 'my_table.my_column_2' was added
Type: field-added
Severity: info
Level: field
InternalModel: my_table
InternalField: my_column_2
`,
},
{
name: "not-breaking - spec model",
args: args{
dataContractLocation: "test_resources/diff/not_breaking_datacontract.yaml",
stableDataContractLocation: "test_resources/diff/datacontract.yaml",
pathToModels: []string{"models"},
pathToType: []string{"schema", "type"},
pathToSpecification: []string{"schema", "specification"},
},
wantErr: false,
wantOutput: `Found 1 differences between the data contracts!
🟡 Difference 1:
Description: field 'my_table.my_column_2' was added
Type: field-added
Severity: info
Level: field
InternalModel: my_table
InternalField: my_column_2
`,
},
{
name: "two fields, 1 type-changed - spec model",
args: args{
dataContractLocation: "test_resources/diff/two_fields_datacontract.yaml",
stableDataContractLocation: "test_resources/diff/two_fields_stable_datacontract.yaml",
pathToModels: []string{"models"},
pathToType: []string{"schema", "type"},
pathToSpecification: []string{"schema", "specification"},
},
wantErr: false,
wantOutput: `Found 1 differences between the data contracts!
🔴 Difference 1:
Description: type of field 'my_table.my_column' was changed from 'text' to 'timestamp'
Type: field-type-changed
Severity: breaking
Level: field
InternalModel: my_table
InternalField: my_column
`,
},
{
name: "breaking - dbt model",
args: args{
dataContractLocation: "test_resources/diff/dbt_breaking_datacontract.yaml",
stableDataContractLocation: "test_resources/diff/dbt_datacontract.yaml",
pathToModels: []string{"models"},
pathToType: []string{"schema", "type"},
pathToSpecification: []string{"schema", "specification"},
},
wantErr: false,
wantOutput: `Found 2 differences between the data contracts!
🔴 Difference 1:
Description: field 'my_table.my_column' was removed
Type: field-removed
Severity: breaking
Level: field
InternalModel: my_table
InternalField: my_column
🟡 Difference 2:
Description: field 'my_table.my_column_2' was added
Type: field-added
Severity: info
Level: field
InternalModel: my_table
InternalField: my_column_2
`,
},
{
name: "not-breaking - dbt model",
args: args{
dataContractLocation: "test_resources/diff/dbt_not_breaking_datacontract.yaml",
stableDataContractLocation: "test_resources/diff/dbt_datacontract.yaml",
pathToModels: []string{"models"},
pathToType: []string{"schema", "type"},
pathToSpecification: []string{"schema", "specification"},
},
wantErr: false,
wantOutput: `Found 1 differences between the data contracts!
🟡 Difference 1:
Description: field 'my_table.my_column_2' was added
Type: field-added
Severity: info
Level: field
InternalModel: my_table
InternalField: my_column_2
`,
},
{
name: "two fields, 1 type-changed - dbt model",
args: args{
dataContractLocation: "test_resources/diff/dbt_two_fields_datacontract.yaml",
stableDataContractLocation: "test_resources/diff/dbt_two_fields_stable_datacontract.yaml",
pathToModels: []string{"models"},
pathToType: []string{"schema", "type"},
pathToSpecification: []string{"schema", "specification"},
},
wantErr: false,
wantOutput: `Found 1 differences between the data contracts!
🔴 Difference 1:
Description: type of field 'awesome_feature_usage_history.my_column' was changed from 'string' to 'timestamp'
Type: field-type-changed
Severity: breaking
Level: field
InternalModel: awesome_feature_usage_history
InternalField: my_column
`,
},
{
name: "spec model + dbt model",
args: args{
dataContractLocation: "test_resources/diff/datacontract.yaml",
stableDataContractLocation: "test_resources/diff/dbt_datacontract.yaml",
pathToModels: []string{"models"},
pathToType: []string{"schema", "type"},
pathToSpecification: []string{"schema", "specification"},
},
wantErr: false,
wantOutput: `Found 1 differences between the data contracts!
🟡 Difference 1:
Description: schema type changed from 'dbt' to 'data-contract-specification'
Type: dataset-schema-type-changed
Severity: info
Level: dataset
`,
},
}
for _, tt := range tests {
RunLogOutputTest(t, tt, "Diff", func(buffer *bytes.Buffer) error {
return Diff(
tt.args.dataContractLocation,
tt.args.stableDataContractLocation,
tt.args.pathToModels,
tt.args.pathToType,
tt.args.pathToSpecification,
buffer,
)
})
}
}