68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
package main
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import (
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"bytes"
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"errors"
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"os"
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"testing"
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)
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func TestRun(t *testing.T) {
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// Test cases for Run Tests
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testCases := []struct {
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name string
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col int
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op string
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exp string
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files []string
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expErr error
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}{
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{name: "RunAvg1File", col: 3, op: "avg", exp: "227.6\n",
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files: []string{"./testdata/example.csv"},
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expErr: nil,
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},
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{name: "RunAvgMultiFiles", col: 3, op: "avg", exp: "233.84\n",
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files: []string{"./testdata/example.csv", "./testdata/example2.csv"},
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expErr: nil,
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},
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{name: "RunFailRead", col: 2, op: "avg", exp: "",
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files: []string{"./testdata/example.csv", "./testdata/fakefile.csv"},
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expErr: os.ErrNotExist,
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}, {name: "RunFailColumn", col: 0, op: "avg", exp: "",
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files: []string{"./testdata/example.csv"},
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expErr: ErrInvalidColumn,
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},
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{name: "RunFailNoFiles", col: 2, op: "avg", exp: "",
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files: []string{},
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expErr: ErrNoFiles,
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},
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{name: "RunFailOperation", col: 2, op: "invalid", exp: "",
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files: []string{"./testdata/example.csv"},
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expErr: ErrInvalidOperation,
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},
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}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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var res bytes.Buffer
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err := run(tc.files, tc.op, tc.col, &res)
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if tc.expErr != nil {
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if err == nil {
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t.Errorf("Expected error. Got nil instead")
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}
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if !errors.Is(err, tc.expErr) {
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t.Errorf("Expected error %q, got %q instead", tc.expErr, err)
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}
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return
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}
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if err != nil {
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t.Errorf("Unexpected error: %q", err)
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}
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if res.String() != tc.exp {
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t.Errorf("Expected %q, got %q instead", tc.exp, &res)
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}
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})
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}
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}
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